Dr
Craig Woody
(Brookhaven National Lab)
10/13/15, 3:50 PM
Applications
Poster
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,...
Dr
Barbara Alvarez Gonzalez
(CERN)
10/13/15, 3:50 PM
Material and Ageing Tests
Poster
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. ...
Mr
Fabian Kuger
(CERN / University of Würzburg (Germay))
10/13/15, 3:50 PM
Production techniques
Poster
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...
Dr
Atsuhiko Ochi
(Kobe University)
10/13/15, 3:50 PM
Production techniques
Poster
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...
Dr
Mickaël Frotin
(LLR)
10/13/15, 3:50 PM
Applications
Poster
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...
Annika Vauth
(DESY)
10/13/15, 3:50 PM
MPGD Detector Physics
Poster
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...
Mr
Viktor Ratza
(Helmholtz-Institut für Strahlen- und Kernphysik, Germany)
10/13/15, 3:55 PM
MPGD Detector Physics
Poster
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...
Dr
Marek Michael GRUCHALA
(CERN)
10/13/15, 3:55 PM
MPGD Detector Physics
Poster
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...
Dr
Thorsten Lux
(IFAE)
10/13/15, 3:55 PM
New Developments in MPDGs
Poster
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...
Mr
Konstantinos Ntekas
(National Technical University of Athens)
10/13/15, 3:55 PM
MPGD Detector Physics
Poster
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...
Dr
Michael Tytgat
(UGent)
10/13/15, 3:55 PM
Production techniques
Poster
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...
Dr
Sharma Archana
(University of Wisconsin)
10/13/15, 3:55 PM
Simulation and Software
Poster
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...
Dr
Philippe Gros
(LLR, Ecole Polytechnique)
10/13/15, 4:00 PM
Applications
Poster
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...
Prof.
João Veloso
(University of Aveiro)
10/13/15, 4:00 PM
MPGD Detector Physics
Poster
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...
Dr
Thorsten Lux
(ETH, Zurich)
10/13/15, 4:00 PM
New Developments in MPDGs
Poster
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...
Ms
Megu Kubota
(RIKEN/Tokyo University of Science)
10/13/15, 4:00 PM
Production techniques
Poster
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...
Mr
Benoit Mauss
(GANIL)
10/13/15, 4:00 PM
Material and Ageing Tests
Poster
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...
Mr
Christoph Krieger
(University of Bonn)
10/13/15, 4:00 PM
Applications
Poster
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...
Dr
Seongtae Park
(CAPP/IBS)
10/13/15, 4:00 PM
Applications
Poster
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...
Mr
Kazuki Komiya
(Tokyo Metropolitan Industrial Technology Reserach Institute)
10/13/15, 4:10 PM
New Developments in MPDGs
Poster
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...
Dr
Sebastian White
(Princeton University)
10/13/15, 4:10 PM
New Developments in MPDGs
Poster
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 to...
Ms
CHRYSOULA VASSOU
(NCSR Demokritos)
10/13/15, 4:10 PM
Production techniques
Poster
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...
Mr
Vladyslav Krylov
(LAL - Orsay, T. Shevchenko National University - Kyiv)
10/13/15, 4:10 PM
Applications
Poster
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...
Paolo Iengo
(CERN)
10/13/15, 4:10 PM
New Developments in MPDGs
Poster
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...
Mr
Hiroyuki Sugiyama
(Hamamatsu Photonics K.K.)
10/13/15, 4:10 PM
Production techniques
Poster
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,...
Shuddha Shankar Dasgupta
(T)
10/13/15, 4:10 PM
New Developments in MPDGs
Poster
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...
Giovanni Bencivenni
(LNF)
10/13/15, 4:10 PM
New Developments in MPDGs
Poster
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....
Dr
Ewa Kowalska-Strzęciwilk
(IPPLM)
10/13/15, 4:15 PM
Production techniques
Poster
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...
Dr
Maryna Chernyshova
(Institute of Plasma Physics and Laser Microfusion)
10/13/15, 4:15 PM
Applications
Poster
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...
Ms
Katie Ley
(AWE)
10/13/15, 4:15 PM
Applications
Poster
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...
Mr
Simon Bouteille
(CEA-Saclay)
10/13/15, 4:15 PM
Applications
Poster
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...
Mr
Filippo Resnati
(ETHZ / CERN)
10/13/15, 4:15 PM
Applications
Poster
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...
Mr
Jianrong ZHOU
(Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS))
10/13/15, 4:15 PM
Applications
Poster
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...
Dr
Sebastien Procureur
(CEA-Saclay)
10/13/15, 4:15 PM
Applications
Poster
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...
Mrs
Palma Rita Altieri
(Università degli Studi di Bari & INFN)
10/13/15, 4:20 PM
Applications
Poster
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...
Dr
Éric Berthoumieux
10/13/15, 4:20 PM
New Developments in MPDGs
Poster
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) ...
Dr
Bartosz Mindur
(AGH University of Science and Technology)
10/13/15, 4:20 PM
Applications
Poster
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...
Dr
Tomasz Czarski
(Institute of Plasma Physics and Laser Microfusion)
10/13/15, 4:20 PM
Applications
Poster
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...
Dr
Andrea Muraro
(IFP-CNR)
10/13/15, 4:20 PM
Applications
Poster
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...
Dr
Emanuel Pollacco
(IRFU/SPhN)
10/13/15, 4:20 PM
Applications
Poster
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...
Prof.
João Veloso
(University of Aveiro)
10/13/15, 4:20 PM
Applications
Poster
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...
Mr
Fabian Kuger
(CERN / University of Würzburg (Germay))
10/13/15, 4:25 PM
MPGD Detector Physics
Poster
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...
Mr
Yunus KAYA
(Uludag University)
10/13/15, 4:25 PM
MPGD Detector Physics
Poster
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...
Dr
Tadeusz Kowalski
(AGH, University of Science and Technology, Krakow, Poland)
10/13/15, 4:25 PM
Simulation and Software
Poster
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,...
Mr
Yunus KAYA
(Uludag University)
10/13/15, 4:25 PM
Simulation and Software
Poster
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...
Mr
YALÇIN KALKAN
(RD51)
10/13/15, 4:25 PM
Simulation and Software
Poster
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...
Prof.
João Veloso
(University of Aveiro)
10/13/15, 4:25 PM
MPGD Detector Physics
Poster
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...
Dr
Dimos Sampsonidis Sampsonidis
(Aristotle University ofThessaloniki)
10/13/15, 4:25 PM
MPGD Detector Physics
Poster
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...
Prof.
Nayana Majumdar
(Saha Institute of Nuclear Physics)
10/13/15, 4:30 PM
Simulation and Software
Poster
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...
Prof.
Supratik Mukhopadhyay
(Saha Institute of Nuclear Physics)
10/13/15, 4:30 PM
Simulation and Software
Poster
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...
Dr
Karol Malinowski
(Institute of Plasma Physics and Laser Microfusion)
10/13/15, 4:30 PM
Simulation and Software
Poster
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...
Mr
Alfredo Castaneda Hernandez
(Texas A&M University at Qatar)
10/13/15, 4:30 PM
Simulation and Software
Poster
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...
Takao Kitaguchi
(Hiroshima University)
10/13/15, 4:35 PM
Applications
Poster
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...
Giuseppe De Robertis
(BA)
10/13/15, 4:35 PM
Electronics
Poster
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...
Dr
Waqar Ahmed
(National Centre for Physics, Quaid-I-Azam Univ.)
10/13/15, 4:35 PM
Electronics
Poster
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...
Paul Colas
(CEA/Irfu Saclay)
10/13/15, 4:35 PM
Material and Ageing Tests
Poster
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...
Dr
Michele Quinto
(INFN, Sezione di Bari)
10/13/15, 4:35 PM
Electronics
Poster
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,...
Dr
Yi Zhou
(China)
10/13/15, 4:40 PM
Production techniques
Poster
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...
Hugo Natal da Luz
(Instituto de Fìsica, Universidade de São Paulo, Brasil)
10/13/15, 4:40 PM
Applications
Poster
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...
Dr
Timo Hildén
(Helsinki Institute of Physics)
10/13/15, 4:40 PM
Production techniques
Poster
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...
Dr
Qian Liu
(UCAS, China)
10/13/15, 4:40 PM
Production techniques
Poster
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...
Mr
Lev Shekhtman
(Budker INP)
10/13/15, 4:40 PM
MPGD Detector Physics
Poster
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...
Mr
Yuki Mitsuya
(The University of Tokyo)
10/13/15, 4:40 PM
New Developments in MPDGs
Poster
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...
Dr
Luigi Benussi
(LNF)
10/13/15, 4:45 PM
Production techniques
Poster
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...
Giovanna Saviano
(LNF)
10/13/15, 4:45 PM
Poster
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...
Saleh Muhammad
(L)
10/13/15, 4:45 PM
Production techniques
Poster
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...
Mr
Gergo Hamar
(Wigner RCP, Budapest)
10/13/15, 4:45 PM
MPGD Detector Physics
Poster
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...
Dr
Erik Brücken
(Helsinki Institute of Physics)
10/13/15, 4:45 PM
Production techniques
Poster
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....
Dr
Damien Neyret
(CEA Saclay IRFU/SPhN)
10/13/15, 4:45 PM
Production techniques
Poster
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...
Renato Negrão
(Instituto de Física, Universidade de São Paulo, Brasil)
10/13/15, 4:45 PM
Production techniques
Poster
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...
