12-17 October 2015
Trieste - Italy
Europe/Rome timezone
Home > Contribution List
Displaying 119 contributions out of 119
Type: Oral contribution Session: Contributed talks
Track: Applications
A prototype detector is being developed which combines the functions of a Time Projection Chamber for charged particle tracking and a Cherenkov detector for particle identification. The TPC consists of a 10x10x10 cm3 drift volume where the charge is drifted to a 10x10 cm2 triple GEM detector. The charge is measured on a readout plane consisting of 2x10 mm2 chevron pads which provide a spatial reso ... More
Presented by Craig WOODY on 12 Oct 2015 at 15:10
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
Garfield++ is a toolkit for the simulation of the particle detectors that use semi-conductors as sensitive medium. It takes enormous amount of time in the simulations of the complex scenarios such as those involving high detector voltages, gases with larger gains or electric field meshes with large number of elements. We observed that most of the simulation time is being consumed in finding the co ... More
Presented by Mr. Alfredo CASTANEDA HERNANDEZ on 13 Oct 2015 at 16:30
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Micro-Pixel chamber (μ-PIC) with resistive electrodes has been developed for particle tracking detector in the environment of high rate HIP (Highly Ionizing Particles). One of the target of this development is ATLAS Muon Tagger that is considered to be disposed at phase-2 upgrade. The amplification region of μ-PIC is separated by isolated pixels, so it is expected to separate multi incident trac ... More
Presented by Mr. Fumiya YAMANE on 15 Oct 2015 at 17:05
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
A novel MPGD based architecture for single photon detection has been developed to overcome the limitations of the present generation of gaseous single photon detectors when large area coverage is needed (~ m2). It couples two different MicroPatternGasDetector structures, the THickGasElectronMultiplier and the Micromegas, resulting in a hybrid scheme able to exploit the properties and the perfo ... More
Presented by Shuddha Shankar DASGUPTA on 13 Oct 2015 at 16:10
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
In the context of the upgrade of the LHC during the second long shutdown the interaction rate of the ALICE experiment will be increased up to 50 kHz for Pb-Pb collisions. As a consequence, a continuous operation and read-out of the Time Projection Chamber (TPC) will be required. To handle the expected increase of space-charge distortions without a gating grid, the ion backflow of the charge amp ... More
Presented by Mr. Viktor RATZA on 13 Oct 2015 at 15:55
Type: Oral contribution Session: Contributed talks
Track: Applications
The RICH-1 Detector of the COMPASS Experiment at CERN SPS is undergoing an important upgrade for the physics run 2016: four new Photon Detectors, based on MPGD technology and covering a total active area larger than 1.2 square meters will replace the actual MWPC-based photon detectors in order to cope with the challenging efficiency and stability requirements of the new COMPASS measurements. Th ... More
Presented by Fulvio TESSAROTTO on 12 Oct 2015 at 17:15
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
In general, the GEM electrode is based on an organic material such as Polyimide or Liquid Crystal Polymer. However, they cause making short circuit between electrodes by discharge, emitting a lot of gas in high temperature envelopment, and more expensive by a lot of manufacturing process. Therefore the electrode has not higher reliability and the GEM in a sealed chamber is still not appearing in t ... More
Presented by Mr. Kazuki KOMIYA on 13 Oct 2015 at 16:10
Type: Oral contribution Session: Contributed talks
Track: MPGD Detector Physics
Gaseous Electron Multipliers (GEM) are well known for stable operation at high particle fluxes. For the first time we present a study of the intrinsic limits of GEM detectors when exposed to very high particle fluxes of the order of MHz/mm^2. We give an interpretation to the variations of the effective gain, which, as a function of the particle flux, first increases and then decreases. We also di ... More
Presented by Patrik THUINER on 15 Oct 2015 at 15:25
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical, electrical and optical properties. It can be regarded as the thinnest and narrowest conductive mesh with a strong asymmetry for the transmission of low energetic electrons and ions. Graphene layers with an area of the order of a few cm^2 were transferred onto metal support structures with holes ... More
Presented by Mr. Filippo RESNATI on 14 Oct 2015 at 10:25
Type: Oral contribution Session: Contributed talks
Track: Applications
Negative-ion TPCs have been studied for low-rate and high-resolution applications. Lately, the discovery of "minority carriers" in CS2 gas, broadened its potential and the measurement of absolute Z-position in a self-triggering TPC became possible (J.B.R. Battat et al., (2014) arXiv:1410.7821). The minority carriers appeared after adding a few percent O2 to the original gas. They each drift with ... More
Presented by Mr. Ikeda TOMONORI on 15 Oct 2015 at 10:25
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Micromegas, a micro pattern gaseous detector, is proposed as an active medium for sampling calorimetry. Future linear collider experiments or the High Luminosity LHC experiments can profit from those developments for Particle Flow Calorimetry. Micromegas possesses remarkable properties concerning gain stability, reduced ion feedback, response linearity, adaptable sensitive element granularity, fas ... More
Presented by Dr. Theodoros GERALIS on 12 Oct 2015 at 17:40
Type: Poster Session: Poster session & coffee break
Track: Applications
At large angles (typically greater than ~ 20 degrees), the resolution of conventional GEM tracking detectors deteriorates rapidly due to the increased charge spread along the track direction in the collection gap. In order to circumvent this problem, a minidrift GEM tracking detector has been developed that measures both the position and arrival time of the charge deposited in the drift gap, which ... More
Presented by Dr. Craig WOODY on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: Production techniques
Micromegas is a well-known micro-pattern gaseous detector with excellent properties in operation stability, position resolution, fast response, low ion feedback (about 10%) and good energy resolution. It can be adapted to detect the full range of particle radiation like photons, x-rays, neutrons, charged particles, alphas, nuclei etc. Micromegas implementation is based on PCB manufacturing technol ... More
Presented by Ms. CHRYSOULA VASSOU on 13 Oct 2015 at 16:10
Type: Poster Session: Poster session & coffee break
Track: Material and Ageing Tests
There are more and more applications of resistive coatings for MPGD anodes. They are used for spark suppression and damping in Large Area detectors and for charge spreading to improve the resolution in a TPC (with the suitable RC constant per unit area). Recently a new material, Diamond-Like Carbon has been tested as coating for Micromegas TPC modules. Performances of modules with this new coating ... More
Presented by Paul COLAS on 13 Oct 2015 at 16:35
Type: Poster Session: Poster session & coffee break
Track: Applications
Large area single-electron sensitive gaseous detector consisting of Micromegas/InGrid as gas multiplication device and integrated CMOS ASIC as a replacement of the conventional pad/strip readout, is a promising candidate for comprehensive tracking systems serving also the trigger for future HEP projects. Challenges for the InGrid concept for TPC detector systems are the large number of pixels, th ... More
Presented by Mr. Vladyslav KRYLOV on 13 Oct 2015 at 16:10
Type: Oral contribution Session: Contributed talks
Track: Electronics
Emanuel Pollacco1, H. Baba5, Pascal Baron1, Daniel Bazin4, Chiheb Belkhiria2, Bertram Blank2, Joël Chavas1, Eric Delagnes1, Frederic Druillole1, Patrick Hellmuth2, Cedric Huss2, Tadaaki Isobe5, Eugene Galyaev4, Bill Lynch4, Wolfgang Mittig4, Laurent Nalpas1, Jean-Louis Pedroza2, Riccardo Raabe3, Jérôme Pibernat2, Bruno Raine3, Abdel Rebii2, Shebli Anvar1, Frederic Saillant3, Patrick Sizun1, Na ... More
Presented by Dr. Emanuel POLLACCO on 13 Oct 2015 at 15:25
Type: Poster Session: Poster session & coffee break
Track: Applications
Emanuel Pollacco, Denis Calvet, Anna Corsi,
 Frederic Château, Alain Delbart, Jean-Marc Gheller, Alain Gillibert, Alexadre Obertelli, Clementine Santamaria. IRFU, CEA Saclay , Gif-sur-Yvette, France Rui d’Oiviera, Bertrand Mehl. TD-DEM, CERN Antti Saastamoinen, Brian Roeder, Alexandra Spridon, Grigory Rogachev, Ethan Uberseder, Yevgen Koshchiy, Robert Tribble. Cyclotron Institute,T ... More
Presented by Dr. Emanuel POLLACCO on 13 Oct 2015 at 16:20
Type: Poster Session: Poster session & coffee break
Track: Applications
Compton Cameras are being pointed as the instrument for far X and gamma-ray detection where the traditional Anger Cameras are inefficient. Moreover, these devices avoid the use of a heavy mechanical collimator responsible for a huge decrease of the photons that reach the Anger Camera crystal [1], [2]. Traditionally a Compton Camera is composed of solid state detectors (Si detector + Ge or NaI det ... More
Presented by Prof. João VELOSO on 13 Oct 2015 at 16:20
Type: Oral contribution Session: Contributed talks
Track: Simulation and Software
Knowledge of the ion transport properties is not only required for the calculation of induced currents, the mobility and diffusion also enter the calculation of e.g. space charge evacuation. This is particularly important for TPCs with GEM readout operating in a high-rate environment, as envisioned by the Alice collaboration, where ions in the drift volume distort the tracks. Earlier, we investiga ... More
Presented by Mr. YALÇIN KALKAN on 15 Oct 2015 at 14:10
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Recent investigations with a gaseous avalanche micropatterned detector operating in Kr-Xe mixtures will be presented. The use of such mixtures allows to keep a minimal position resolution over a wide X-ray energy range [1]. Measurements and simulations of the gain, energy and position resolution variation according to the Xenon mixture concentration will be presented. Our first results using a THC ... More
Presented by Prof. João VELOSO on 13 Oct 2015 at 16:00
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
CsI photocathodes coupled to Gaseous Photomultipliers have long been used in experiments and applications due to their high gains, fast response and coverage of large areas of detection at reasonable costs [1, 2]. In the future, experiments based on rare event detection, namely Dark Matter [3, 4] and Double Beta Decay [5] research, are faced with the problem of the prohibitive costs of the use of ... More
Presented by Prof. João VELOSO on 13 Oct 2015 at 16:25
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
In this work we present the micro-Resistive WELL (micro-RWELL): a compact spark-protected single amplification stage MPGD. The micro-RWELL is realized by merging a suitable etched GEM foil with the readout PCB plane coated with a resistive deposition. The copper on the bottom side of the foil has been patterned in order to create small metallic dots in correspondence of each WELL structure. The r ... More
Presented by Giovanni BENCIVENNI on 13 Oct 2015 at 16:10
Type: Poster Session: Poster session & coffee break
Modern gas detectors for the detection of elementary particles, and MPGDs in particular, require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This work investigates the properties of potential eco-friendly gas candidate replacements. The aim is to discuss some of the important properties of gases for M ... More
Presented by Giovanna SAVIANO on 13 Oct 2015 at 16:45
Type: Oral contribution Session: Contributed talks
Liquid hole-multipliers (LHMs) have been suggested as a possible method for generating charge-induced proportional scintillation signals in single-phase noble-liquid time projection chambers (TPCs). Preliminary experiments have shown large scintillation yields in the holes of a Thick Gas Electron Multiplier (THGEM) immersed in liquid xenon. Further detailed studies have uncovered that the underlyi ... More
Presented by Mr. Eran ERDAL on 15 Oct 2015 at 15:00
Session: Invited talk
Presented by Dr. Maxim TITOV on 12 Oct 2015 at 14:30
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
The gain in nearly all MPGDs can be calculated with a precision around $20~\%$ - with the notable exception of GEMs. We know from systematic studies that the discrepancy (a factor of 2 in a standard GEM) can not be due solely to the modelling of the holes, to the accuracy of the ionisation cross section and to Penning effects. Surface charge increases the gain by $20~\%$ in a dry standard GEM an ... More
Presented by Mr. YALÇIN KALKAN on 13 Oct 2015 at 16:25
Session: Invited talk
Presented by Dr. Felix SEFKOW on 13 Oct 2015 at 11:15
Session: Invited talk
Presented by Dr. Robert WAGNER on 13 Oct 2015 at 17:15
Session: Invited talk
Presented by Dr. Umberto MARCONI on 14 Oct 2015 at 11:15
Session: Invited talk
Presented by Prof. Ron LIPTON on 15 Oct 2015 at 12:30
Session: Invited talk
Presented by Prof. Amos BRESKIN on 15 Oct 2015 at 17:30
Presented by Dr. Furio SUGGI LIVERANI on 12 Oct 2015 at 18:15
Presented by Dr. Theodoros GERALIS on 14 Oct 2015 at 10:40
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
How does water modify the surface conductivity of graphene? The hope is that the GEM lets electrons through but not ions. As a result, there would be no space charge due to ions drifting from their production point to the drift volume. Therefore, graphene can be use in GEM detectors. Graphene is an allotrope of carbon in the form of a two-dimensional, atomic-scale, hexagonal lattice in which ... More
Presented by Mr. Yunus KAYA on 13 Oct 2015 at 16:25
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
In recent decades, quantum chemistry calculations have been used for various chemical fields such as reaction pathway analysis and spectroscopic assignments due to the theoretical developments, especially accuracy improvement of functionals in density functional theory (DFT), and high-speed parallel computers. The kinetic studies of formation Xe+Xe cluster in Xe, Ar+Ar cluster in Ar, and Ne+Ne ... More
Presented by Mr. Yunus KAYA on 13 Oct 2015 at 16:25
Type: Poster Session: Poster session & coffee break
Track: Production techniques
This abstract is devoted to design and assembling of GEM detectors for plasma radiation application. In this work we will report the results of mounting of two triple-GEM detectors with different dimensions 100x100mm2 and 200x20mm2. A description of the assembling procedures including the gluing/stretching techniques and selection of materials is given in this work. Particular attention was paid t ... More
Presented by Dr. Ewa KOWALSKA-STRZęCIWILK on 13 Oct 2015 at 16:15
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
A giant (10-50 kt) Liquid Argon Time Projection Chamber (LAr- TPC) has been proposed as the detector for an underground observa- tory for the study of neutrino oscillations, neutrino astrophysics and proton decay. This detector has excellent tracking and calorimetric capabilities, much superior to currently operating neutrino detectors. LBNO-DEMO (WA105) is a large demonstrator of the double ... More
Presented by Dr. Thorsten LUX on 13 Oct 2015 at 16:00
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Two-phase Cryogenic Avalanche Detectors (CRADs) with THGEM multipliers have become an emerging potential technique for rare-event experiments. In this work the current status of the two-phase CRAD prototype in Ar, with electroluminescence (EL) gap and combined THGEM/GAPD-matrix multiplier, is described. The low threshold and high energy resolution of the detector is provided by the EL gap, optical ... More
Presented by Dr. Andrey SOKOLOV on 15 Oct 2015 at 09:35
Type: Poster Session: Poster session & coffee break
Track: Material and Ageing Tests
Active targets are gas-filled detection systems where the gas used as the detection medium serves also as a target for nuclear reactions. They have been used for a wide variety of nuclear physics experiments since the eighties. Improvements in MPGD (Micro Pattern Gaseous Detectors) and in micro electronics achieved in the last decade have lead to the development of a new generation of active targe ... More
Presented by Mr. Benoit MAUSS on 13 Oct 2015 at 16:00
Type: Oral contribution Session: Contributed talks
In view of a possible application as a charge-particle track readout for an Active-Target Time Projection Chamber (AT-TPC), the properties of a hybrid Micro-Pattern Gaseous Detector (MPGD) were investigated in pure low-pressure Hydrogen (H2), Deuterium (D2) and Helium (He). The detector consists of a MICROMesh GAseous Structure (MICROMEGAS) coupled to a single-, or double-cascade Thick Gaseous E ... More
Presented by Dr. Marco CORTESI on 13 Oct 2015 at 14:10
Type: Poster Session: Poster session & coffee break
Track: Applications
ESS instruments like the macromolecular crystallography instrument NMX require an excellent neutron detection efficiency, high-rate capabilities, time resolution, and an unprecedented spatial resolution in the order of a few hundred micrometers over a wide angular range of the incoming neutrons. For these instruments solid converters in combination with Micro Pattern Gas Detectors (MPGDs) are a pr ... More
Presented by Mr. Filippo RESNATI on 13 Oct 2015 at 16:15
Type: Oral contribution Session: Contributed talks
Track: MPGD Detector Physics
The basic layout of an axion helioscope requires a powerful magnet coupled to x-ray optics and a detector in its focal plane. When the magnet is aligned with the Sun, an excess of x-rays at the exit of the magnet is expected, over the background measured at non-alignment periods. Therefore, low background x-ray detectors are a fundamental tool for these searches, partially determining their sensi ... More
Presented by Javier GRACIA GARZA on 15 Oct 2015 at 08:45
Type: Poster Session: Poster session & coffee break
Track: Applications
The CERN Axion Solar Telescope (CAST) is searching for axions and other particles which could be candidates for Dark Matter and even Dark Energy. These particles could be produced in the Sun and detected by a conversion into soft X-ray photons inside a strong magnetic field. This field is provided by a decommissioned LHC prototype dipole magnet accurately pointed towards the Sun. In order to incre ... More
Presented by Mr. Christoph KRIEGER on 13 Oct 2015 at 16:00
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Performing X-ray polarimetry of astrophysical sources is a topic of growing interest, with only a few flying experiments dedicated to it so far. For soft X-rays sources detection from 1 keV to few tens of keV, the best technique certainly consists in using the photoelectric effect, which is the dominant phenomenon at those energies in gaseous detectors. One of the main issues of such detectors is ... More
Presented by Mr. Paul SERRANO on 13 Oct 2015 at 08:45
Type: Poster Session: Poster session & coffee break
Track: Applications
Tungsten, being a main candidate for the plasma facing material in ITER and future fusion reactor for some time [1], has recently started to be used as such on many machines, including on the WEST project, where an actively cooled tungsten divertor is being implemented. Inevitably, this forced a creation of the ITER-oriented research programs aiming to effectively monitor the impurity level of tun ... More
Presented by Dr. Maryna CHERNYSHOVA on 13 Oct 2015 at 16:15
Type: Poster Session: Poster session & coffee break
Track: Applications
The recent development concerning MPGDs, in particular with the work done by the R&D51 collaboration, makes us able to build large and robust detectors. These characteristics suit well the needs of a lot of applications which use the cosmic rays muons to make the tomography of large objects. However, these applications need the muon telescope to be run outside and with a low energy consumption. Af ... More
Presented by Mr. Simon BOUTEILLE on 13 Oct 2015 at 16:15
Type: Poster Session: Poster session & coffee break
Track: Production techniques
Thinner-THGEM, which has 0.2mm thickness, 0.1mm~0.15mm hole diameter, 0.3mm pitch and 5~20um rim has been manufactured successfully. Two methods have been investigated for the manufacture: drilling and laser. The performance has been studied and it shows that 1.0X10^4 gain for one layer and 16% energy resolution for 55Fe source can be achieved. The spatial resolution of thinner-THGEM with 0.3 mm p ... More
Presented by Dr. Qian LIU on 13 Oct 2015 at 16:40
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
Inner Trackers are key detectors in Particle Physics experiments; excellent spatial resolution, radiation transparency and hardness, and operability under high occupancies are main requirements. While planar Gas Electron Multiplier detectors are common in modern spectrometers, only one Cylindrical-GEMs detector has been produced up to now by the KLOE2 Collaboration and is being commissioned. We ... More
Presented by Gianluigi CIBINETTO on 13 Oct 2015 at 09:10
Type: Poster Session: Poster session & coffee break
Track: Applications
Thick gaseous electron multiplier detectors are cheap, robust and scalable to large areas. Here we consider the application of THGEM technology to cosmic-ray muon scattering tomography in support of nuclear security. Muon tomography applications include the passive scanning of cargo containers for regions of abnormally high density, indicative of concealed special nuclear material. THGEMs are suit ... More
Presented by Ms. Katie LEY on 13 Oct 2015 at 16:15
Type: Oral contribution Session: Contributed talks
Track: Applications
New high count rate and large area detectors are needed for future spallation neutron sources. Indeed, the 3He-shortage limits the use of 3He tubes in present and future applications where large areas (several m2) and high efficiency (>50%) detectors are envisaged. In this framework, GEM (Gas Electron Multiplier) is one of the explored detector technologies. GEMs feature good spatial resolution (< ... More
Presented by Gabriele CROCI on 13 Oct 2015 at 14:35
Type: Poster Session: Poster session & coffee break
Track: Applications
The development of large and robust MPGDs has opened the door to a vast new field of applications. Among them, the detection of Special Nuclear Material (SNM) in goods transportation has the highest potential in terms of emerging market and mass production. Most of the current detection methods are based on artificial radiations (X-rays, gammas or neutrons), which all suffer from several drawbacks ... More
Presented by Dr. Sebastien PROCUREUR on 13 Oct 2015 at 16:15
Type: Poster Session: Poster session & coffee break
Track: Applications
Gamma-ray astronomy has become an important branch of astroparticle physics. It now suffers from a sensitivity gap in the 1-100MeV range. Compton telescopes lose sensitivity above 1MeV, and pair production telescopes, due to multiple scattering, have low resolution and high background below a few 100MeV. HARPO proposes a gaseous detector, a TPC, to fill this gap and improve angular resolution by ... More
Presented by Dr. Philippe GROS on 13 Oct 2015 at 16:00
Type: Poster Session: Poster session & coffee break
Track: Applications
The HARPO detector is a demonstrator of gamma-ray detector and polarimeter, for a potential space telescope. It is a (30cm) 3 cubic TPC filled with high pressure (up to 4bar) Ar:isobutane mixture. It has been tested with cosmic rays and in a high intensity gamma-ray beam. The TPC data, in particular from cosmic rays, can be used to monitor the gas properties (gain, drift velocity and electron at ... More
Presented by Dr. Mickaël FROTIN on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: Production techniques
An optical Quality Assurance (QA) system has been developed at the Detector Laboratory of the Helsinki Institute of Physics. The size and shape of the holes in a Gas Electron Multiplier (GEM) -foil can be measured with the system. The system is used e.g. for the QA of the GEM foils of the TPC detectors being developed for the beam diagnostics system of the SuperFRS at future FAIR facility and in ... More
Presented by Dr. Timo HILDéN on 13 Oct 2015 at 16:40
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
The International Large Detector (ILD) is one of two detector concepts at the ILC. It relies on highly granular calorimetry and a high precision tracking system. The tracking system consists of a Silicon vertex detector, forward tracking disks and a large volume Time Projection Chamber (TPC), which will be read out with micro-pattern gas detectors (MPGD). Within the framework of the LCTPC collabo ... More
Presented by Annika VAUTH on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: Applications
In recent years, a remarkable scientific and technological progress led to the construction of accelerators based facilities dedicated to hadrontherapy was done. This kind of technology requires precise and continuous control of position, intensity and shape of the ions or protons used to irradiate cancers. Patient safety, accelerator operation and dose delivery should be optimized by a real tim ... More
Presented by Mrs. Palma Rita ALTIERI on 13 Oct 2015 at 16:20
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
We would like to describe a novel class of Micro Pattern Gas Detectors, dedicated to fast time applications: the Fast Timing MPGD (FTM). Time resolution in gas detectors is dominated by fluctuations in the drift region of the nearest distance of the primary ionisation to amplification region. In order to improve their time resolution, we propose a new configuration, in which we split the conven ... More
Presented by Dr. Brian DORNEY on 14 Oct 2015 at 09:10
Type: Poster Session: Poster session & coffee break
Track: Applications
The fast neutron GEM detectors (nGEM), i.e. GEM detectors equipped with a cathode that also serves as neutron-proton converter foil, represent a new frontier of beam monitor devices in the new fast neutron beam lines in the spallation sources experiments, such as ChipIR at ISIS, or in the future fusion experiments such as the ITER neutral beam injector. The GEM detectors are particularly suited to ... More
Presented by Dr. Andrea MURARO on 13 Oct 2015 at 16:20
Type: Poster Session: Poster session & coffee break
Track: Production techniques
A Micro-patterned gaseous detector (MPGD) is one of the most attractive and useful detector in various field. A Hole-type MPGD with glass capillary plate (CP) is the most promising detector to provide two-dimensional imaging capability with a good position resolution and highly reliable to discharge. CP gaseous detectors have been intensively studied for the purposes of X-ray radiography, cosmic ... More
Presented by Mr. Hiroyuki SUGIYAMA on 13 Oct 2015 at 16:10
Type: Oral contribution Session: Contributed talks
Track: Simulation and Software
A Time Projection Chamber (TPC) is an ideal device for three-dimensional tracking, momentum measurement and identification of charged particles. They are used in many running experiments, including ALICE. Owing to the enormous particle multiplicity per event, very specific requirements are made on the performance of the detectors in harsh radiation environments. Different R&D activities are curren ... More
Presented by Ms. Purba BHATTACHARYA on 15 Oct 2015 at 14:35
Type: Oral contribution Session: Contributed talks
A novel radiation imaging gaseous detector has been successfully developed and 3D computed tomography (CT) is successfully demonstrated. The imaging system consists of a chamber filled with Ar/CF4 scintillating gas mixture, inside of which Glass GEM (G-GEM) is mounted for gas multiplication. In this system electrons are generated by the reaction between X-rays and the gas, and visible photons by e ... More
Presented by Dr. Takeshi FUJIWARA on 14 Oct 2015 at 11:55
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
There is a growing interest in applying timing measurement of physics objects (leptons, jets, photons) in the high pileup environment planned for the next decade at the LHC. Time of occurrence of events within the same bunch (“in-time pileup”) can be used analogously to the more commonly used “event vertex position” tagging to resolve events of interest in this busy environment. Extending ... More
Presented by Dr. Sebastian WHITE on 13 Oct 2015 at 16:10
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Spatial resolution of GEM based tracking detectors is simulated and measured. The simulation includes GEANT4 based transport of high energy electrons with careful accounting of atomic relaxation processes including emission of phluorescent photons and Auger electrons and custom post-processing, including accounting of diffusion, gas amplification fluctuations, distribution of signals on readout el ... More
Presented by Mr. Lev SHEKHTMAN on 13 Oct 2015 at 16:40
Type: Oral contribution Session: Contributed talks
Track: Applications
The search for the neutrinoless double beta decay (DBD) is one of the most important quests nowadays in neutrino physics. Among the different techniques used, high pressure xenon (HPXe) gas time projection chambers (TPC) stand out because they allow to image the topology of the DBD event (one straggling track ending in two blobs), and use it to discriminate signal from background events. Recent re ... More
Presented by Dr. Javier GALáN on 15 Oct 2015 at 09:10
Type: Poster Session: Poster session & coffee break
Track: Production techniques
GEM detectors have been successfully used in modern nuclear and high-energy physics experiments which demonstrates the maturity of the GEM detector technology in applications for high-rate experiments. The key to the GEM application at large-scale experiments is cost-effective realization of large-size detectors, in which development of GEM detector assembly techniques plays a key role. The detect ... More
Presented by Dr. Yi ZHOU on 13 Oct 2015 at 16:40
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
The glass gas electron multiplier, glass gem (G-GEM), is a GEM based detector which is composed of a photoetchable glass substrate (PEG3, HOYA Corporation, Japan). Its improved spark tolerance and mechanical stability provides better handling and simple detector setup. No outgassing from the substrate enables the long-term sealed operation of detectors. In this research we report on the recent re ... More
Presented by Mr. Yuki MITSUYA on 13 Oct 2015 at 16:40
Type: Poster Session: Poster session & coffee break
Track: Applications
One of the most relevant issues in neutron detection is the search for alternatives to Helium-3 as neutron converter. Its high absorption cross section for thermal neutrons used to make it the preferred absorber to build large area thermal neutron detectors. Its current unavailability triggered an intense research to find for alternatives, turning the attention of gaseous detectors developers back ... More
Presented by Hugo NATAL DA LUZ on 13 Oct 2015 at 16:40
Type: Poster Session: Poster session & coffee break
Track: Production techniques
Thick Gas Electron Multipliers (THGEMs) are based on the GEM microstructure, with thickness, pitch and hole diameter enlarged by a factor 10.The substrate is a common copper clad 0.5 mm thick FR4 or G10 board for printed circuits, with 0.5mm diameter holes mechanically drilled at a pitch of 1mm. Although it relies on a much simpler technological process to be fabricated, a precision of few microme ... More
Presented by Renato NEGRãO on 13 Oct 2015 at 16:45
Type: Poster Session: Poster session & coffee break
Track: Production techniques
MicroMegas with resistive anode will be used for the NSW upgrade of the ATLAS experiment at LHC. The resistive electrode is one of key technology for MPGDs to prevent sparks. Large area resistive electrodes for the MM have been developed using two different technology; screen printing and carbon sputtering. Maximum size of each resistive foil is 45cm x 220cm with printed pattern of 425 micron pitc ... More
Presented by Dr. Atsuhiko OCHI on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Resistive Micromegas (Micro MEsh Gaseous Structure) detectors have been chosen by the ATLAS collaboration at LHC for the high luminosity upgrade due to their capability to maintain full efficiency and high spatial resolution at high rates. Operation in the Inner Muon Station of the high-rapidity region, the so called New Small Wheel (NSW) requires also these performances to be maintened in magneti ... More
Presented by Dr. Dimos Sampsonidis SAMPSONIDIS on 13 Oct 2015 at 16:25
Type: Oral contribution Session: Contributed talks
The THGEMs development and application activities at IHEP, Beijing, China in recent years will be summarized and reported. We have made great progresses in new substrate, high spacial resolution and big area THGEMs. A serials of new types of substrates, Ceramic, PTFE, Kapton and FR-4 were developed for low neutron scattering and low radioactivity applications. By using laser technology, the intrin ... More
Presented by Dr. Yuguang XIE on 14 Oct 2015 at 12:20
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
In the MicroMegas detectors currently under construction for the ATLAS New Small Wheel (NSW) upgrade, the conversion region is limited to 5mm thickness. The number of primary ionization-clusters induced by a passing muon is about 10-15, with a few electrons each. The accuracy of the µTPC reconstruction method relies on the single cluster positions. Consequentially high electron losses during the ... More
Presented by Mr. Fabian KUGER on 13 Oct 2015 at 16:25
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
In 2015 the first full size resistive-strip MicroMegas operational modules for the ATLAS New Small Wheel upgrade will be realized. The goal is to provide precision muon tracking with spatial resolution below 100 μm on trapezoidal detector areas between 2 and 3 m2. The overall thickness of each detector modules is about 70 mm and the total number of read-out channels is of the order of 10^4. Each ... More
Presented by Dr. Jonathan BORTFELDT on 12 Oct 2015 at 16:25
Type: Poster Session: Poster session & coffee break
Track: Production techniques
The development work carried out at CERN to push the MicroMegas technology to a new frontier is now coming to an end. The construction of the first anode (or read-out) boards for the upgrade of the ATLAS muon system will demonstrate in full-scale the feasibility of this ambitious project. The read-out boards, representing the heart of the detector, are manufactured in industries, making the Micro ... More
Presented by Mr. Fabian KUGER on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: Material and Ageing Tests
A resistive-MicroMegas quadruplet built at CERN, serving as prototype of the micromegas for the upgrade of the ATLAS muon system, has been installed at the new CERN Gamma Irradiation Facility (GIF++) with the aim of carrying out a long-term aging study. The detector has four active layers about 0.5 m2 each equipped with 1024 read-out strip and sputtered resistive layer for spark protection. It i ... More
Presented by Dr. Barbara ALVAREZ GONZALEZ on 13 Oct 2015 at 15:50
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Resistive Micromegas (Micro MEsh Gaseous Structure) detectors have proven along the years to be a reliable high rate capable detector technology characterised by an excellent spatial resolution. The ATLAS collaboration at LHC has chosen the resistive Micromegas technology, along with the small-strip Thin Gap Chambers (sTGC), for the high luminosity upgrade of the inner muon station in the high-rap ... More
Presented by Mr. Konstantinos NTEKAS on 13 Oct 2015 at 15:55
Type: Oral contribution Session: Contributed talks
Track: Electronics
The VMM is an ASIC that can be used in a variety of tracking detectors. It is designed to be used with resistive Micromegas and sTGC detectors in the New Small Wheel upgrade of the ATLAS Muon spectrometer. The ASIC is fabricated in the 130nm 1.2V 8‐metal CMOS technology from IBM. The ASIC integrates 64 channels, each providing charge amplification, discrimination, neighbour logic, amplitude and ... More
Presented by Dr. Georgios IAKOVIDIS on 15 Oct 2015 at 12:05
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
In view of the use of MicroMegas detectors for the upgrade of the ATLAS muon system, two detector quadruplets with an area of 0.5 m2 per plane serving as prototypes for future ATLAS chambers have been constructed. They are based on the resistive-strip technology and thus spark tolerant. The detectors were built in a modular way. The quadruplets consist of two double-sided readout panels and three ... More
Presented by Edoardo Maria FARINA on 13 Oct 2015 at 09:35
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
We have developed a multi-grid-type MSGC (M-MSGC) for neutron applications and proved 0.6 mm neutron spatial resolution for our test detector with a He-3 gas mixture. Then we try to enlarge the size of our M-MSGC for practical use. Also, we tried to fabricate a transparent MSGC and successfully operated the test device as shown in Fig. 1. It was operated in Ar/CF4 gas mixture and both charge and l ... More
Presented by Prof. Hiroyuki TAKAHASHI on 14 Oct 2015 at 12:45
Type: Oral contribution Session: Contributed talks
Track: Applications
The Liquid Argon (LAr) Time Projection Chamber (TPC) is the state-of-the-art technology for neutrino detection thanks to its superb 3 dimensional (3D) charge imaging and calorimetry performance. Based on this technology, a giant (10-40 kt) LAr TPC has been proposed as the detector for an underground observatory for the study of neutrino oscillations, neutrino astrophysics and proton decay. Unlike ... More
Presented by Mr. Shuoxing WU on 15 Oct 2015 at 10:00
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
The ternary gas mixtures of Ne + CO2 + N2 is used in TPC, in the main tracking detector of ALICE at LHC accelerator. This mixture has a small diffusion constants, small thickness, reasonable value of electron drift velocity, small multiple scattering. A small addition of N2 increases the electron drift velocity and reduces the micro-sparking. In this mixtures, besides the direct ionization, gas ... More
Presented by Dr. Tadeusz KOWALSKI on 13 Oct 2015 at 16:25
Type: Poster Session: Poster session & coffee break
Track: Applications
Abstract: With the international development of the new generation neutron source, the traditional neutron detector can't satisfy the demand of the application of the high flux especially. And facing the global crisis of 3He supply, the research on the new style of the neutron detector becomes extremely urgent. Considered with the development demand of the domestic neutron scattering facility CSNS ... More
Presented by Mr. Jianrong ZHOU on 13 Oct 2015 at 16:15
Type: Oral contribution Session: Contributed talks
Track: Production techniques
Time Projection Chamber (TPC) with MPGD readout is proposed to be the central tracker of ILD detector for the International Linear Collider (ILC). Positive-ion feedback from the gas-amplification region to the drift region can deteriorate the position resolution of TPC. In order to prevent this from happening, ILC beam-train time structure allow us to use a gate to stop the ion feedback, mounting ... More
Presented by Daisuke ARAI on 15 Oct 2015 at 16:15
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
Owing to the use of typical manufacturing techniques for microelectronics, the new genre of Micro-Pattern Gaseous Detectors (MPGDs) with high granularity and very small distances between the electrodes can offer high spatial and time resolutions and good counting rate capability. The requirement of fast collection of data in various applications of the MPGDs has necessitated a thorough optimizatio ... More
Presented by Prof. Nayana MAJUMDAR on 13 Oct 2015 at 16:30
Type: Poster Session: Poster session & coffee break
Track: Applications
The basic principle of an X-ray imaging system based on a large area 10cm x 10cm GEM (Gas Electron Multiplier) detector equipped with 2-dimensional readout and its application to mapping of pigment distributions in historical paintings using X-ray fluorescence technique has been already demonstrated in our previous works. The key components of the developed system are: X-ray tube, adjustable pinho ... More
Presented by Dr. Bartosz MINDUR on 13 Oct 2015 at 16:20
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
The new GE1/1 system of Gas Electron Multipliers (GEM) is going to be installed in the CMS detector in the forward region of 1.6 < |η| < 2.2 after the second long LHC shutdown. 36 super-chambers are planned to be installed in order to ensure the redundancy and robustness of the muon system in high-luminosity conditions at the LHC. A further extension of the GEM system is also considered. Every su ... More
Presented by Dr. Sharma ARCHANA on 13 Oct 2015 at 15:55
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Gas electron multiplier (GEM) technology is being proposed for the forward muon upgrade of the CMS detector for the Phase 2 of the CERN LHC. The proposed prototypes for CMS upgrade, referred to as GE1/1 detectors, are large-area trapezoidal shaped detectors using three GEM-foils arranged in the 3/1/2/1mm gap configuration with 3072 radial readout strips segmented over 24 readout sectors in the (η ... More
Presented by Dr. Marek Michael GRUCHALA on 13 Oct 2015 at 15:55
Type: Oral contribution Session: Contributed talks
Track: Applications
After 5 year of R&D on Gas Electron Multiplier (GEM) technology, the CMS GEM Collaboration proposed to instrument the vacant high eta region of the CMS muon system with large triple-GEM detectors, a technology able to sustain the harsh environment at the High-Luminosity LHC while operating for 20 years. New large size (990 x 440-220 mm2) triple-foil GEM detectors were developed, equipped with a ne ... More
Presented by Dr. Brian DORNEY on 12 Oct 2015 at 16:50
Type: Poster Session: Poster session & coffee break
Track: Production techniques
We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of MPGD, with particular attention to the realisation of the largest triple GEM chambers so far operated, the GE1/1 chambers of the CMS experiment at LHC. The GE1/1 CMS project consists of 144 GEM chambers of about 0.5 qm active area each, employing three GEM foils per chamber, to be instal ... More
Presented by Dr. Luigi BENUSSI on 13 Oct 2015 at 16:45
Type: Oral contribution Session: Contributed talks
Track: Material and Ageing Tests
Gaseous detectors potentially show degradation of their performances with time, mostly due to the deposition of polymers created in the plasmas surrounding the amplification region. This “classical aging” depends on many and various parameters such as the flux of particles, charge density in the amplification structure, gas composition with possible pollutants, gas flow rate as well as the phy ... More
Presented by Mr. Jeremie MERLIN on 15 Oct 2015 at 16:40
Type: Poster Session: Poster session & coffee break
Track: Production techniques
The CMS GEM collaboration plans to equip the very forward muon system with triple GEM detectors that can withstand the environment of the high-luminosity LHC. This project is at the final stages of R&D and moving to production. An unprecedented large area of several 100 qm are to be instrumented with GEM detectors which will be produced in six different sites around the world. A common constructio ... More
Presented by Dr. Michael TYTGAT on 13 Oct 2015 at 15:55
Type: Oral contribution Session: Contributed talks
Track: Applications
We invented an X-ray generator by using gas electron multiplier (GEM) foils combining with the coniferous carbon nano structure (CCNS), and demonstrated that the generator worked properly as we expected. Of course, this is not an usual application of MPGD but one of possibility to expand our field of the MPGD devices. There is no doubt about the importance of X-ray generators in recent world, e ... More
Presented by Dr. Toru TAMAGAWA on 13 Oct 2015 at 15:00
Type: Poster Session: Poster session & coffee break
Track: Electronics
The CMS Collaboration is planning to use triple GEM detectors as part of its muon system upgrade in order to enhance the muon tracking and triggering capabilities in the region of 1.5 < | eta |< 2.2. Triple-GEM detectors have been identified as a suitable technology to sustain the specific high radiation environment in that region. In CMS the triple-GEM detectors will be equipped with the VFAT3 ch ... More
Presented by Dr. Waqar AHMED on 13 Oct 2015 at 16:35
Type: Poster Session: Poster session & coffee break
Track: Production techniques
The GE1/1 CMS project consists of 144 GEM chambers of about 0.5 qm active area each, based on the triple GEMs technology, to be installed in the very forward region of the CMS endcap during the long shutdown of LHC in 2108-2019. GE1/1 chambers will be operated for decades in harsh environment, and are expected to perform consistently providing good space and time resolution and excellent rate capa ... More
Presented by Saleh MUHAMMAD on 13 Oct 2015 at 16:45
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
Thick-Groove is a recently developed device belonging to the Micro Pattern Gaseous Detector (MPGD) family. It has been specifically designed for cosmic ray tomography, having the potential to be easily produced on industrial scale. The Thick-Groove detector (TGD) has a large conversion region (few mm up to few cm) and an amplification region less than 1 mm wide. Anode and cathode strips are produ ... More
Presented by Paolo IENGO on 13 Oct 2015 at 16:10
Type: Poster Session: Poster session & coffee break
Track: Production techniques
The ALICE (A Large Ion Collider Experiment) experiment at the Large Hadron Collider (LHC) at CERN is dedicated to heavy ion physics to explore the structure of strongly interacting matter. The Time Projection Chamber (TPC) of ALICE is a tracking detector located in the central region of the experiment. It offers excellent tracking of charged particles and identification of those via dE/dx. Afte ... More
Presented by Dr. Erik BRüCKEN on 13 Oct 2015 at 16:45
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
The International Large Detector (ILD) concept for the International Linear Collider (ILC) features a GEM- or Micromegas-based Time Projection Chamber (TPC) as a central tracking detector. Considering the background environment of a high density of charged tracks at the ILC, a gating system located between the drift volume and the gas amplification device of the TPC to prevent positive ions from ... More
Presented by Dr. Thorsten LUX on 13 Oct 2015 at 15:55
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
The RPWELL detector is a single-sided THGEM (copper clad on one side only) coupled to the readout electrode through a sheet of large bulk resistivity. Former laboratory and accelerator studies, performed in Ne/CH4(5%), have demonstrated its large dynamic range (from single electrons to thousand times MIPS), high gains (> 106), and high detection efficiency over a broad particle-flux range. The RP ... More
Presented by Dr. Shikma BRESSLER on 14 Oct 2015 at 08:45
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
(1) The u-PIC (micro pixel chamber) is our original gaseous two-dimensional imaging detector made by PCB (Printed Circuit Board) technology. The pixel Cu electrodes of u-PIC with a pitch of 400 um are placed on a polyimide substrate. At present u-PICs are used as the TPC of the Electron Tracking Compton Camera (ETCC) which is being developed for MeV gamma-ray astronomy. In order to improve the acc ... More
Presented by Mr. Taito TAKEMURA on 14 Oct 2015 at 09:35
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
The Micromegas vertex tracker (MVT) of the future Cebaf Large Acceptance Spectrometer for the 12 GeV (CLAS12) accelerator upgrade in Hall B at Jefferson Lab will be installed at the end of this year. The MVT consists of 2 cylindrical layers, 6 in the final phase, for the barrel part and 6 identical disks for the forward part. Micromegas bulk technology associated with resistive strips has been u ... More
Presented by Dr. Maxence VANDENBROUCKE on 13 Oct 2015 at 10:00
Type: Poster Session: Poster session & coffee break
Track: Applications
The measurement system based on GEM - Gas Electron Multiplier detector is developed for X ray diagnostics of magnetic confinement tokamak plasmas. The fast and accurate mode of the serial data acquisition is applied for the dynamic plasma diagnostics. The ADC samples triggered by the detector current are acquired independently for the measurement channels. The charges are calculated within the def ... More
Presented by Dr. Tomasz CZARSKI on 13 Oct 2015 at 16:20
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
The current state of the art in fast timing for existing experiments is of the order of 100 picosec[1-2] on the time of arrival of both charged particles and electromagnetic showers. Current R&D on charged particle timing is approaching the level of 10 picosec [1] but is not primarily directed at sustained performance at high rates and under high radiation (as would be needed for HL-LHC pileup mit ... More
Presented by Dr. Thomas PAPAEVANGELOU on 14 Oct 2015 at 10:00
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
A time projection chamber (TPC) is envisaged just beyond the vertex detector of the proposed linear collider. Because of the high flux environment, micro-pattern gaseous detectors (MPGD) have been proposed to build the end-plates of the TPC. Because of the large area coverage and their geometry, the end-plates are expected to be made of a number of MPGD modules. During experiments using the large ... More
Presented by Prof. Supratik MUKHOPADHYAY on 13 Oct 2015 at 16:30
Type: Poster Session: Poster session & coffee break
Track: Applications
We have developed a gaseous Time Projection Chamber (TPC) containing a single-layered foil of a Gas Electron Multiplier (GEM) to open up a new window on cosmic X-ray polarimetery. The GEM-TPC polarimeter works as a highly sensitive tracker for photoelectrons whose initial direction is sensitive to linear polarization of incident X-rays. The GEM foil is used to increase signal-to-noise ratio of pho ... More
Presented by Takao KITAGUCHI on 13 Oct 2015 at 16:35
Type: Poster Session: Poster session & coffee break
Track: Electronics
In this work the MOSAIC (“MOdular System for Acquisition, Interface and Control”) board, designed for the readout and testing of the new pixel tracker modules of the ALICE experiment, is described. It is based on a large Artix7 Field Programmable Gate Array device by Xilinx and is compliant with the six unit “Versa Modular Eurocard” standard (6U-VME) for easy housing in a standard VMEbus ... More
Presented by Giuseppe DE ROBERTIS on 13 Oct 2015 at 16:35
Type: Poster Session: Poster session & coffee break
Track: Electronics
The TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement at the LHC) experiment at LHC, has been designed to measure the total proton-proton cross-section with a luminosity independent method, based on the optical theorem, and study the elastic and diffractive scattering at the LHC energy. To cope with the increased intensity of the LHC run 2 phase, and th ... More
Presented by Dr. Michele QUINTO on 13 Oct 2015 at 16:35
Type: Oral contribution Session: Contributed talks
Track: MPGD Detector Physics
The ALICE Collaboration is planning a major upgrade of its central barrel detectors to be able to cope with the increased LHC luminosity beyond 2018. In order to record an increased interaction rate of 50 kHz for Pb−Pb collisions, the TPC will be operated in an ungated mode with continuous readout. This demands for a replacement of the currently used gated MWPC (Multi-Wire Proportional Chamber) ... More
Presented by Mr. Andreas MATHIS on 12 Oct 2015 at 15:35
Type: Poster Session: Poster session & coffee break
Track: New Developments in MPDGs
A new transparent XY-MicroMegas neutron beam profiler M. Diakaki(1), E. Berthoumieux(1), T. Papaevangelou(1), F. Gunsing(1,3), E. Dupont(1), M. Kebbiri(1), S. Anvar(1), P. Sizun(1), E. Monmarthe(1), D. Desforge(1), D. Jourde(1), M. Sabaté-Gilarte(3), L. Tassan-Got(2), L. Audouin(2), E. Ferrer-Ribas(1), J. Heyse(5), P. Schillebeeckx(5), C. Paradela(5), F. Belloni(5) 1) Commissariat à l ... More
Presented by Dr. Éric BERTHOUMIEUX on 13 Oct 2015 at 16:20
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
The Linear Collider is a future accelerator colliding electrons and positrons at center of mass energies of 250-500 GeV. One of the detector concepts under study foresees a large volume TPC as a main tracking device. The LCTPC collaboration studies several different MPGD technologies which could fulfill the requirements of the ILC physics program. To test and compare the readout technologies, a te ... More
Presented by Jochen KAMINSKI on 13 Oct 2015 at 10:25
Type: Oral contribution Session: Contributed talks
Track: New Developments in MPDGs
New large size Micromegas gaseous detectors (40x40 cm² active area) were developed since 2009 in view of the forthcoming COMPASS new physics programs starting this year, which uses the CERN high intensity muon and hadron beams of a few hundred GeV scattered on thick fixed targets. Compared to previous Micromegas installed in 2001-2002, the new detectors feature a huge reduction of the discharge r ... More
Presented by Dr. Damien NEYRET on 13 Oct 2015 at 11:55
Type: Poster Session: Poster session & coffee break
Track: Production techniques
The CEA Saclay/IRFU COMPASS group built a dozen of new Micromegas pixelized detectors in 2014-2015 for the new hybrid detector based tracking system (see the corresponding abstract). These Micromegas detectors were based on bulk boards produced by the ELVIA company at Coutances (France). The boards are large, 80x60 cm² with an active area of 40x40 cm², and require a very precise etching of the P ... More
Presented by Dr. Damien NEYRET on 13 Oct 2015 at 16:45
Type: Poster Session: Poster session & coffee break
Track: Production techniques
We have developed a gas electron multiplier (GEM) for the NASA small satellite mission, PRAXyS (Polarization from Relativistic Astrophysical X-ray Sources), which carries a photoelectron tracking type gas X-ray polarimeter using a time projection chamber technique. The GEM foil has a hole diameter of 70 um, hole pitch of 140 um, and insulator thickness of 100 um. We adopted a liquid crystal polyme ... More
Presented by Ms. Megu KUBOTA on 13 Oct 2015 at 16:00
Type: Poster Session: Poster session & coffee break
Track: MPGD Detector Physics
Novel Cherenkov detector upgrades favour GEM and Thick-GEM based MPGD systems. These detectors have reduced ion backflow, fast signal formation, high gain, and could suppress the MIP signals as well. Their common drawbacks are the inefficiencies of photo-electron collection from the top of the TGEM and the local variation of multiplication due to the special geometry. The developed high re ... More
Presented by Mr. Gergo HAMAR on 13 Oct 2015 at 16:45
Type: Oral contribution Session: Contributed talks
Track: Applications
The Continuous Electron Beam Accelerator Facility (CEBAF) of the Thomas Jefferson National Laboratory (JLab) has been upgraded to deliver 12 GeV high intensity beams. The upgrade will allow outstanding study of nucleon structure and structure functions in the valence quark region with an unprecedented accuracy. The Super Bigbite Spectrometer (SBS) combines a large acceptance detector package with ... More
Presented by Dr. Kondo GNANVO on 13 Oct 2015 at 12:20
Type: Poster Session: Poster session & coffee break
Track: Applications
Finding nonzero EDM (electric dipole moment) in a fundamental particle would signal strong CP violation and consequently it could explain matter and antimatter asymmetry in our universe. The storage ring proton Electric Dipole Moment (pEDM) experiment is one of the EDM searches using storage ring aiming sensitivity level of 10-29 e·cm per year. In the experiment, the stored polarized protons are ... More
Presented by Dr. Seongtae PARK on 13 Oct 2015 at 16:00
Type: Oral contribution Session: Contributed talks
Track: Production techniques
After the Long Shutdown 2 (LS2) the LHC will provide lead-lead collisions at interaction rates as high as 50kHz. In order to cope with such conditions the ALICE Time Projection Chamber (TPC) needs to be upgraded. After the upgrade the TPC will have to run in a continuous mode, but without any degradation of the momentum and dE/dx resolution compared to the performance of the present TPC. Since ... More
Presented by Mr. Alexander DEISTING on 13 Oct 2015 at 12:45
Type: Poster Session: Poster session & coffee break
Track: Simulation and Software
Studies of Gas Electron Multiplier (GEM) detector are conducted at the IPPLM institute for several years. They aim to develop GEM detector to register the soft X-ray in tokamak experimental conditions. This paper presents the results of simulations of electron avalanches produced within the tested detector due to absorption of X-ray photon. In first step simulations involved the construction of sp ... More
Presented by Dr. Karol MALINOWSKI on 13 Oct 2015 at 16:30