Conveners
Contributed talks
- Leszek Ropelewski (CERN)
Contributed talks
- Leszek Ropelewski (CERN)
Contributed talks
- Atsuhiko Ochi (Kobe University)
Contributed talks
- Atsuhiko Ochi (Kobe University)
Contributed talks
- Amos Breskin (Weizmann Institute)
Contributed talks
- Maxim Titov (CEA Saclay)
Contributed talks
- Maxim Titov (CEA Saclay)
Contributed talks
- Maria Gabriella Catanesi (BA)
Contributed talks
- Maria Gabriella Catanesi (BA)
Contributed talks
- Craig Woody (Brookhaven National Lab)
Contributed talks
- Craig Woody (Brookhaven National Lab)
Craig Woody
(Brookhaven National Lab)
12/10/2015, 15:10
Applications
Oral contribution
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...
9.
Study of the dE/dx resolution of a GEM Readout Chamber prototype for the upgrade of the ALICE TPC
Mr
Andreas Mathis
(Physik Department, Technische Universität München, 85748 Garching, Germany; Excellence Cluster ’Origin and Structure of the Universe’, 85748 Garching, Germany)
12/10/2015, 15:35
MPGD Detector Physics
Oral contribution
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...
Dr
Jonathan Bortfeldt
(LMU University Munich)
12/10/2015, 16:25
New Developments in MPDGs
Oral contribution
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...
Dr
Brian Dorney
(European Organization for Nuclear Research (CERN))
12/10/2015, 16:50
Applications
Oral contribution
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...
Fulvio Tessarotto
(TS)
12/10/2015, 17:15
Applications
Oral contribution
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...
Dr
Theodoros Geralis
(NCSR Demokritos)
12/10/2015, 17:40
New Developments in MPDGs
Oral contribution
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,...
Mr
Paul Serrano
(CEA)
13/10/2015, 08:45
New Developments in MPDGs
Oral contribution
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...
Gianluigi Cibinetto
(FE)
13/10/2015, 09:10
New Developments in MPDGs
Oral contribution
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...
Edoardo Maria Farina
(PV)
13/10/2015, 09:35
New Developments in MPDGs
Oral contribution
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...
Dr
Maxence Vandenbroucke
(CEA Saclay)
13/10/2015, 10:00
New Developments in MPDGs
Oral contribution
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...
Jochen Kaminski
(University of Bonn)
13/10/2015, 10:25
New Developments in MPDGs
Oral contribution
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,...
Dr
Damien Neyret
(CEA Saclay IRFU/SPhN)
13/10/2015, 11:55
New Developments in MPDGs
Oral contribution
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...
96.
Status of GEM trackers for Super Bigbite Spectrometer in Hall A for 12 GeV CEBAF Upgrade at JLab
Dr
Kondo Gnanvo
(University of Virginia, Charlottesville, VA 22903, USA)
13/10/2015, 12:20
Applications
Oral contribution
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...
Mr
Alexander Deisting
(GSI Helmholtzzentrum für Schwerionenforschung)
13/10/2015, 12:45
Production techniques
Oral contribution
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....
Dr
Marco Cortesi
(National Superconducting Cyclotron Laboratory (Michigan State University))
13/10/2015, 14:10
Oral contribution
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...
Gabriele Croci
(MIB - Università di Milano-Bicocca)
13/10/2015, 14:35
Applications
Oral contribution
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...
Dr
Toru Tamagawa
(RIKEN)
13/10/2015, 15:00
Applications
Oral contribution
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...
Dr
Emanuel Pollacco
(IRFU/SPhN)
13/10/2015, 15:25
Electronics
Oral contribution
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,...
Dr
Shikma Bressler
(Weizmann Institute of Science)
14/10/2015, 08:45
New Developments in MPDGs
Oral contribution
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....
Dr
Brian Dorney
(European Organization for Nuclear Research (CERN))
14/10/2015, 09:10
New Developments in MPDGs
Oral contribution
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...
Mr
Taito Takemura
(Kyoto Univ.)
14/10/2015, 09:35
New Developments in MPDGs
Oral contribution
(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...
Dr
Thomas Papaevangelou
(IRFU - CEA Saclay)
14/10/2015, 10:00
New Developments in MPDGs
Oral contribution
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...
Mr
Filippo Resnati
(ETHZ / CERN)
14/10/2015, 10:25
New Developments in MPDGs
Oral contribution
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...
Dr
Theodoros Geralis
(NCSR Demokritos)
14/10/2015, 10:40
Dr
Takeshi Fujiwara
(National Institute of Advanced Industrial Science and Technology)
14/10/2015, 11:55
Oral contribution
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...
Dr
Yuguang Xie
(Institute of High Energy Physics, CAS)
14/10/2015, 12:20
Oral contribution
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...
Prof.
Hiroyuki Takahashi
(The University of Tokyo)
14/10/2015, 12:45
New Developments in MPDGs
Oral contribution
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...
Javier Gracia Garza
(Universidad de Zaragoza)
15/10/2015, 08:45
MPGD Detector Physics
Oral contribution
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...
Dr
Javier Galán
(U. Zaragoza)
15/10/2015, 09:10
Applications
Oral contribution
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....
Dr
Andrey Sokolov
(Novosibirsk State University, Budker Institute of Nuclear Physics)
15/10/2015, 09:35
New Developments in MPDGs
Oral contribution
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,...
Mr
Shuoxing Wu
(ETH Zurich)
15/10/2015, 10:00
Applications
Oral contribution
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...
Mr
Ikeda Tomonori
(Kobe University)
15/10/2015, 10:25
Applications
Oral contribution
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...
Dr
Georgios Iakovidis
(Brookhaven National Laboratory)
15/10/2015, 12:05
Electronics
Oral contribution
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...
Mr
YALÇIN KALKAN
(RD51)
15/10/2015, 14:10
Simulation and Software
Oral contribution
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...
Ms
Purba Bhattacharya
(School of Physical Sciences, NISER, India)
15/10/2015, 14:35
Simulation and Software
Oral contribution
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...
Mr
Eran ERDAL
(Weizmann Institute of Science)
15/10/2015, 15:00
Oral contribution
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...
Patrik Thuiner
(CERN, Vienna University of Technology)
15/10/2015, 15:25
MPGD Detector Physics
Oral contribution
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...
Daisuke Arai
(Fujikura Ltd.)
15/10/2015, 16:15
Production techniques
Oral contribution
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,...
Mr
Jeremie MERLIN
(CERN)
15/10/2015, 16:40
Material and Ageing Tests
Oral contribution
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...
Mr
Fumiya Yamane
(Kobe Univ.)
15/10/2015, 17:05
New Developments in MPDGs
Oral contribution
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...
