Maksym Titov
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
01/07/2013, 10:05
George Iakovidis
(National Technical Univ. of Athens (GR))
01/07/2013, 11:15
Micromegas is one of the detector technologies (along with the TGC-Thin Gap Chambers) that has been chosen for precision tracking and trigger purposes for the upgrade of the forward muon detectors of the ATLAS experiment in view of the LHC luminosity increase. We present a survey of the prototype micromegas detector performances obtained in recent test beam campaigns with high energy hadron...
Michael Tytgat
(Ghent University (BE))
01/07/2013, 11:40
The CMS GEM collaboration is developing a system of triple-GEM detectors for the endcap muon system (1.6 < |eta| < 2.4) of the CMS experiment at the LHC. GEM micro-pattern gas detectors are well-suited for the particle rates expected in that region at the planned high-luminosity LHC. With spatial resolution of order 100 microns, GEMs would enhance trigger capability and muon reconstruction....
Markus Ball
(Technische Universitaet Muenchen (DE))
01/07/2013, 12:05
The ALICE (A Large Ion Collider Experiment at CERN) collaboration plans
an upgrade of the detector during the second long shutdown of the LHC,
where the interaction rate will be increased to 50 kHz for Pb-Pb collisions.
This demands an operation in an ungated continuous mode of the Time
Projection Chamber (TPC). Therefore, a gating grid can not be used to
block the ion back-flow (IBF) to...
Paul Colas
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
01/07/2013, 14:50
Hiroyuki Sako
(Japan Atomic Research Agency)
01/07/2013, 15:30
A TPC has been developed for J-PARC E42 experiment to search for H-dibaryon in (K-, K+) reaction. An event with 2 pi- and 2 protons decaying from H-dibaryon is searched for inside the TPC. The TPC has octagonal prism shape drift volume with about 50 cm diameter with 55 cm drift length filled with Ar-CH4 (90:10) gas. At the end of the drift volume, 3-layer GEMs are equipped. In order to analyze...
Gianfranco Morello
(Univ. degli Studi della Calabria)
01/07/2013, 15:55
The upgrade of the KLOE detector at the DAFNE $\Phi$-factory foresees the insertion of a new Inner Tracker device around the interaction region, composed by four tracking layers with diameters from 260 mm to 410 mm and an active lenght of 700 mm. Each layer is realized as a cylindrical triple-GEM detector, a solution that allows to keep the total material budget under 2\% of $X_0$, of utmost...
Felix Valentin Boehmer
(Technische Universitaet Muenchen (DE))
01/07/2013, 16:20
A large TPC (75 cm length, 15 cm radius, ~10000 readout channels) with GEM amplification operating in an ungated mode has been built and installed at the FOPI experiment at GSI, Darmstadt, where it was successfully tested in a physics campaign (pion-beam on different targets). From the recorded data, charged particle tracks entering the GEM-TPC are reconstructed using a fully 3-dimensional...
Juan Antonio Garcia Pascual
(Facultad de Ciencias-Universidad de Zaragoza)
01/07/2013, 16:45
The 222Rn emanation has significant contribution in the overall background for rare event searches experiment, in order to measure this emanations a high sensitivity detector have been designed with the aim of a minimum detectable activity of 100 μBq. The detection method is the electrostatic collection of the 222Rn daughters on a Micromegas detector. Using a chamber with a volume of 21.2 l...
Begoña Fernandez
(CNA-University of Seville)
01/07/2013, 16:45
For nuclei identification purposes at the focal plane of S3, new experimental area of SPIRAL2 at GANIL, it is necessary to reconstruct the trajectories of the nuclei. Classical tracking detectors in beam would generate a lot of angular and energy straggling due to their thickness. One solution could be the use of Se-D (Secondary electron Detection). It consists of only a thin emissive foil in...
Christopher Armaingaud
(Institut de Physique et Chimie des Materiaux de Strasbourg (FR))
01/07/2013, 16:45
The CMS GEM collaboration has proposed an upgrade of the CMS forward muon system with triple-GEM detectors. An extensive R & D program has demonstrated that these detectors have the rate capability and radiation resistance needed to operate in the environment of the high-luminosity LHC. Moreover, their excellent position resolution will enhance the performance of muon triggering and...
Shikma Bressler
(Weizmann Institute of Science (IL))
01/07/2013, 16:45
This work presents the experimental measurements obtained for UV-induced photo-electron extraction efficiency from a CsI photocathode into He with CF4 and CH4 gas mixtures. A 1000Å CsI photocathode was deposited on a gold plated THGEM for photo-electron conversion. Charge-gain measurements were obtained with a Single-THGEM detector operating in these gas mixtures using a UV lamp for the...
Gergo Hamar
(MTA KFKI RMKI)
01/07/2013, 16:45
TGEM based micropattern gaseous photon detecotrs suffer from inefficiencies on photo-electron collection and detection due to the microstructure of the TGEM's surface. An exploration of this structure can lead to deeper understanding and optimization of construction parameters. Built from a proper optical section attached to a three dimensional scanning device a focused single photo-electron...
Laura Segui Iglesia
(Departamento de Fisica Teorica-Facultad de Ciencias-Universidad)
01/07/2013, 16:45
Neutrinoless double beta decay could give essential information about neutrino mass and nature. One of the nowadays experimental approaches to look for the double beta decay is to use a high pressure gaseous TPC due to the good energy resolution and the topological information of each event that can be obtained with a pixelized gaseous detector. Pattern recognition may help to discriminate...
Konstantinos Ntekas
(National Technical Univ. of Athens (GR))
01/07/2013, 16:45
Five small prototype MicroMeGas detectors were positioned in the ATLAS detector during LHC running at sqrt(s) = 7 and 8 TeV. A 9 x 5 cm2 two-gap detector was placed in front of the electromagnetic calorimeter and four 10 x 10 cm2 on the ATLAS Small Wheels, the first station of the forward muon spectrometer. The one attached to the calorimeter was exposed to rates that are orders of magnitude...
Stefano Levorato
(Universita e INFN (IT))
01/07/2013, 16:45
The THicK GEM (THGEM) electron multipliers are derived from the GEM design, by scaling the geometrical parameters and changing the production technology: THGEMs are PCBs produced by etching and drilling. THGEMs can be produced in large series and large size at moderate cost with standard PCB technology, in spite of the large number of holes: some millions per square meter. Small-size (a few...
Susana Cebrian
(University of Zaragoza)
01/07/2013, 16:45
Micromesh gas amplification structures (Micromegas) are being used or considered as readout of Time Projection Chambers (TPCs) in the field of Rare Event searches (dealing with dark matter, double beta decay or solar axions). The topological information of the events offered by these gaseous detectors could provide a very powerful tool of signal identification and background rejection. But in...
Jeremie Alexandre Merlin
(Institut de Physique et Chimie des Materiaux de Strasbourg (FR))
01/07/2013, 16:45
The CMS GEM collaboration is developing Gas Electron Multiplier (GEM) detectors for use in the endcap muon detector of the CMS experiment. The GEM detectors can operate well in the environment expected at the high-luminosity LHC. To insure long-term operation of the detectors, we test for gain drop, gain non-uniformity, dark current increase, discharge rate increase, and resolution loss after...
Thomas Papaevangelou
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
01/07/2013, 17:55
Several types of Micromegas based detectors have been developed and are being used for neutron time-of-flight measurements in facilities like n_TOF at CERN. A transparent neutron flux monitor is installed permanently in the neutron beam to
measure the incident neutron flux, while a similar device is being developed for the NFS facility at GANIL. An XY-strip and a pixelized Micromegas have...
Jaime Ruz Armendariz
(Lawrence Livermore Nat. Laboratory (US))
01/07/2013, 18:20
The NIFFTE project is a double sided fission TPC with micromegas readout that is being developed to measure the energy dependent neutron induced cross sections of the major and minor actinides to an accuracy better than 1%. Our collaboration, a group of 7 universities and 4 national laboratories, has undertaken the task of building the first TPC for this purpose. Neutron-induced fission cross...
Rob Veenhof
(Uludag University (TR))
02/07/2013, 09:00
Matteo Alfonsi
(NIKHEF (NL))
02/07/2013, 10:05
Dual phase and high pressure noble gas Time Projection Chambers (TPC) are successfully employed in rare event experiments such as Dark Matter and neutrino-less double beta decay searches. The simultaneous measurement of the scintillation light and the ionisation electrons, converted to scintillation via the electroluminescence mechanism, allows for accurate 3D-reconstruction of the energy...
Shikma Bressler
(Weizmann Institute of Science (IL))
02/07/2013, 10:30
The Thick Gas Electron Multiplier (THGEM) is a simple and robust electrode suitable for large area detectors. The results of extensive comparative studies of the physical properties of different THGEM-based structures will be reviewed. The focus is on newly suggested THGEM-like configurations as well as on recently developed characterization methods. We will report on the properties of THGEM...
Paul Colas
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
02/07/2013, 11:15
The bulk Micromegas detector is considered to be a promising candidate for building TPCs for several future experiments including the projected linear collider. The standard bulk with a spacing of 128 micron has already established itself as a good choice for its performances in terms of gas gain uniformity, energy and space point resolution and its capability to efficiently pave large readout...
Julien Pancin
(Grand Accelerateur National d'Ions Lourds (FR))
02/07/2013, 11:40
Active target detection systems, where the gas used as the detection medium is also a target for nuclear reactions, have been used for a wide variety of nuclear physics experiments since the eighties. The improvement in MPGD (Micro Pattern Gaseous Detectors) and in micro-electronics achieved in the last decade permits the development of a new generation of active targets with higher...
Lev Shekhtman
(Budker Institute of Nuclear Physics (BINP))
02/07/2013, 12:05
GEM-based position sensitive detectors are used and planned to be used in several experiments in the Budker INP. At present eight triple-GEM detectors are installed in the KEDR experiment at the VEPP-4M collider where they operate in the tagging system measuring momenta of electrons and positrons after two-photon interactions. Several triple-GEM detectors made of very light components are...
Francisco Ignacio Garcia Fuentes
(Helsinki Institute of Physics (FI))
02/07/2013, 12:30
The FAIR facility is an international accelerator centre for research with ion and antiproton beams. It is being built at Darmstadt, Germany as an extension to the current GSI research institute. One major part of the facility will be the Super-FRS
separator. The NUSTAR experiments will benefit from the Super-FRS, which will deliver an unprecedented range of radioactive ion beams (RIB). These...
Anand Kumar Dubey
(Department of Atomic Energy (IN))
02/07/2013, 12:55
A large area, high rate, high granularity gas detector system is being developed for detection of muons in the Compressed Baryonic Experiment (CBM) at the upcoming FAIR facility in Germany. Consisting of alternating layers of detector-triplets and thick hadron absorbers, the main task of these Muon Chambers (MUCH) is to detect dimuons arising out of the decay of the low mass vector mesons and...
Rui De Oliveira
(CERN)
02/07/2013, 14:50
Fulvio Tessarotto
(Universita e INFN (IT))
02/07/2013, 15:30
We are developing large size THick GEM (THGEM)-based detectors of single photons, mainly meant for Cherenkov imaging applications. The R&D programme includes the complete characterization of the THGEM electron multipliers, the study of the aspects related to the detection of single photons and the engineering towards large size detector prototype. Our most recent achievements include:...
Dr
Atsuhiko Ochi
(Kobe University (JP))
02/07/2013, 17:05
The Micro Pixel Chamber (μ-PIC) using resistive electrodes have been developed and tested. The surface cathodes are made from resistive material, by which the electrical field is reduced when large current is flowed. Two-dimensional readouts are realized by oth anodes and pickup electrodes, on which signals are induced. High gas gain (>50000) was measured using 55Fe (5.9 keV) source, and very...
joao veloso
(university of aveiro)
02/07/2013, 17:30
A novel gas-avalanche patterned hole electron multiplier, based on the 2D-THCOBRA concept, is presented.
The microdot-THCOBRA (µdot-THCOBRA) presented in this work has active area of 10 × 10 cm2 and was specially designed for imaging purposes. It is a double-sided structure made out of a 0.4 mm thick G10 plate, covered with 50 µm of copper on both sides. Similarly to the 2D-THCOBRA, on the...
Alessandro Marchioro
(CERN)
03/07/2013, 09:00
Michael Lupberger
(Universitaet Bonn (DE))
03/07/2013, 09:40
Micromegas detectors have intrinsically a high granularity that is given by the distance between the holes in the mesh. To reflect this from the readout side an ASIC, the Timepix chip, with a pixel pitch of 55µm is used in our experiments. In the past a production process using photolithography was developed at the University of Twente on single chip basis. In this process the holes of the...
Diego Gonzalez Diaz
(Universidad de Zaragoza (ES))
03/07/2013, 10:30
Microbulk-Micromegas is a new generation of Micromegas (MICRO MEsh GAseous Structure) used for the detection and tracking of particles. Its simplicity, inherited from its constituent element --a double copper-clad kapton foil--, enhances its radiopurity, making it particularly well suited for rare event searches. The energy resolution is amongst the best obtained in mpgd architectures, with...
Andrey Sokolov
(Ecole Polytechnique)
03/07/2013, 11:40
Two-phase Cryogenic Avalanche Detectors (CRADs) with THGEM multipliers have become an emerging technique for rare-event experiments. In this work the performance of two-phase CRADs in Ar with THGEM/GAPD-matrix optical readout has for the first time demonstrated in terms of high spatial resolution and low detection threshold. Here the double-THGEM charge multiplier was combined with a 3x3...
Javier Gracia Garza
(Universidad de Zaragoza (ES))
03/07/2013, 12:05
Axion helioscopes aim at the detection of solar axions through their conversion into x-rays in laboratory magnetic fields. The use of low background and low energy threshold x-ray detectors is an essential component contributing to the sensitivity of these searches. Micromegas readouts operated in a Time Projection Chamber have demonstrated they can accomplish these goals. The possibility of...
Fabrizio Murtas
(Istituto Nazionale Fisica Nucleare (IT))
03/07/2013, 14:50
Gergo Hamar
(MTA KFKI RMKI)
03/07/2013, 15:30
Micopattern technologies opened new horizons on gaseous photon detection. A well designed hybrid of a TGEM and an innovative multiwire structure can result in a RICH detector, operating in the UV regime, with the advantages of both technologies. Basic properties of the TCPD (ThickGEM+CCC Photon Detector) have been tested with beta and UV photon source, whereas its applicability as Cherenkov...
Rafael M Gutierrez
(Universidad Antonio Nariño)
03/07/2013, 16:45
In this work we present the progress of the MPGD laboratory at the Universidad Antonio Nariño (UAN), Bogotá, Colombia. This is a new facility for research, development, training and new applications of MPGDs and related technologies. Along with the RD51-CERN, this laboratory is also supported by a new PhD program in applied science at the UAN. This is an effort of the UAN to continuo and...
Pedro Manuel Mendes Correia
(University of Aveiro (PT))
03/07/2013, 16:45
Charging-Up of the insulator surfaces in MicroPatterned Gas Detectors (MPGDs) have been pointed as one of the responsible for the difference between experimental and Monte Carlo results. In this work an iterative method to simulate the charging-Up in Gas ectron Multiplier (GEM) and in the Thick-Gas Electron Multiplier (THGEM) is propose. The method consists on the simulation of the avalanches...
Andre Zibell
(Ludwig-Maximilians-Univ. Muenchen (DE))
03/07/2013, 16:45
High-rate capable micro-pattern gas detectors, as miromegas, are foreseen to replace the current detectors in the innermost foreward region of the ATLAS small wheel systems. In 2012, two micromegas prototype detectors have been installed inside the ATLAS myon spectrometer in front of a CSC detector. To read the data from these detectors together with the other ATLAS subsystems, a ReadOutDriver...
Saitkat Biswas
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
03/07/2013, 16:45
In the GSI detector laboratory a test setup has been installed for the study of the characteristics of the Gas Electron Multiplier (GEM). GEMs will be used as trackers in the Muon Chamber in the future Compressed Baryonic Matter (CBM) experiment. The characteristics of triple GEM detectors have been studied systematically by using cosmic ray muons. The minimum ionizing particle (MIP) spectra...
Dr
Atsuhiko Ochi
(Kobe University (JP))
03/07/2013, 16:45
New MPGD production method, forming resistive electrodes by metal/carbon sputtering, has been developed. Both fine electrodes structure (<50 micron) forming and large area production (>1m^2) are available using this method. The surface resistivity is controlled within a few tens percent of uniformity in the range of 100kΩ/sq. – 10MΩ/sq. Those properties are very useful for ATLAS MicroMEGAS...
Piotr Jan Gasik
(Technische Universitaet Muenchen (DE))
03/07/2013, 16:45
ALICE at the CERN-LHC is planning a major upgrade of the central barrel detectors to cope with an increase of the LHC luminosity in Pb-Pb after 2018. The goal is to record Pb-Pb interactions at a rate of 50-100 kHz after Long Shutdown 2 (LS2), which is a factor of about 100 more the current data acquisiton rate. For the Time Projection Chamber (TPC) this implies replacement of the existing...
Ana Luisa Silva
(University of Aveiro)
03/07/2013, 16:45
The THCOBRA [1] consists on a hybrid device combining characteristics of a THGEM and a MHSP in one single structure. The structure presents two multiplication stages allowing to reach the high gains needed to use resistive line readout methods. The 2D-THCOBRA structure used has an active area of about 10x10 cm2. The 2D-THCOBRA have shown a fair energy resolution capability of about 22% (FWHM)...
Yacine Haddad
(Ecole Polytechnique (FR))
03/07/2013, 16:45
Digital sampling calorimeter with gaseous sensor layer can be used as Particle Flow Orientated calorimeter, since its homogeneous, robust and cost-efficient. The response of digital gaseous calorimeter can be characterized with efficiency and multiplicity. To validate the simulation tool and to enable further simulation-based analysis as well as data-MC comparison, we developed a general...
Sebastien Procureur
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
03/07/2013, 16:45
Modern particle physics experiments frequently require the detection of particles on large areas, with an excellent spatial resolution. The resulting detectors usually contain thousands of readout elements – strips, pixels, pads – and consequently the same number of electronic channels. In most cases, the electronics budget therefore becomes significant in the total cost of the project. It...
Kondo Gnanvo
(University of Virginia (US))
03/07/2013, 16:45
The Super Big Bite Spectrometer (SBS) is Hall A firt new equipment in preparation for the 12 GeV upgrade of the CEBAF accelerator at Thomas Jefferson National Accelerator facility (JLab). University Of Virginia (UVa) is in charge of building of the GEM-based Polarimetry Back Tracker system for SBS. The Back Tracker is made of 8 large area (50 × 200 cm2) chambers. Each chamber is assembled...
Kohei Terasaki
(University of Tokyo (JP))
03/07/2013, 16:45
Ion Back Flow (IBF) suppression is essential for limiting the space-charge distortions in the upgraded ALICE TPC, where continuous readout is foreseen. GEM technology is one possible solution to achieve small IBF and to keep good performance in terms of particle tracking and particle identification at high rates. The development of readout chambers for the ALICE TPC with single mask GEMs is...
joao veloso
(university of aveiro)
03/07/2013, 16:45
A new VUV single-photon gaseous photomultiplier with position capability will be presented. It is based on a triple cascade of two THGEM followed by a 2D-THCOBRA with a CsI photocathode deposited on the top electrode of the first structure. To allow high gain at low voltage a mixture of Ne/CH4 at atmospheric pressure was used. The gas mixture also provide excellent photoeletron extraction from...
Marco Cortesi
(Weizmann Institute of Science)
03/07/2013, 17:55
We present our recent results on development of high-resolution instrumentation and measurement techniques for investigating various practical thermal-hydraulic processes, such as dynamic gas-liquid two-phase flow. Included in these activities, two projects are currently under development: -) A novel high-efficiency, one-dimensional fast-neutron imaging detector intended for fan-beam...
Carlos Azevedo
(University of Aveiro)
03/07/2013, 18:20
A new Gaseous Compton Camera is under development. It consists on a High Pressure Gas Scintillation Proportional Counter being the light read-out by a gaseous photomultiplier. The photosensor is composed by a CsI photocathode deposited on the top electrode of a THGEM based structure with position capability and operating in a Ne/CH4 mixture at atmospheric pressure. Calculations and simulation...
Silvia Dalla Torre
(Universita e INFN (IT))
03/07/2013, 18:45
Mauro Iodice
(INFN - Sezione di Roma Tre)
05/07/2013, 09:00
Astrid Muennich
(D)
05/07/2013, 09:20
Kohei Terasaki
(University of Tokyo (JP))
05/07/2013, 09:40
Dr
Thomas Zerguerras
(Universite de Paris-Sud 11 (FR))
05/07/2013, 10:00
A.L.M. Silva
05/07/2013, 10:20
Yuki Mitsuya
05/07/2013, 10:40
Saikat Biswas
(GSI)
05/07/2013, 11:20
Dr
Alan Peyaud
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
05/07/2013, 11:40
Tiago Lopes,
joao veloso
(university of aveiro)
05/07/2013, 12:00
Francisco Jose Iguaz Gutierrez
(Universidad de Zaragoza (ES))
05/07/2013, 12:20
Sebastien Procureur
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
05/07/2013, 12:40
Jacques Ball
(DAPNIA)
05/07/2013, 14:00
szymon gburek
05/07/2013, 14:20
Amos Breskin
(Weizmann Institute of Science (IL))
05/07/2013, 14:40
Stephanie Zajac
(Stony Brook)
05/07/2013, 15:00
Karl Ludwig Giboni
(Shanghai Jiao Tong U.)
05/07/2013, 15:20
Piotr Jan Gasik
(Technische Universitaet Muenchen (DE))
05/07/2013, 16:00
Kondo Gnanvo
(University of Virginia (US))
05/07/2013, 16:20
Givi Sekhniaidze
(Universita e INFN (IT))
05/07/2013, 16:40
Othmane Bouhali
(Texas A & M University (US)),
Othmane Bouhali
(Service de Physique des Particules Elementaires)
05/07/2013, 17:00
Dr
Atsuhiko Ochi
(Kobe University (JP))
05/07/2013, 17:20
Fabien Jeanneau
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
05/07/2013, 17:30
Hyunsoo Kim
(Chonbuk National University (KR))
05/07/2013, 17:45
Damien Neyret
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
05/07/2013, 18:00
Ryo Yonamine
(KEK)
06/07/2013, 09:00
Dr
Madhu Sudan Dixit
(Carleton University (CA))
06/07/2013, 09:20
Andrii Chaus
(C)
06/07/2013, 09:30
Piotr Podgorski
06/07/2013, 09:40
Pedro Correia
(University of Aveiro)
06/07/2013, 10:00
Michele Quinto
(Universita e INFN-Bari (IT))
06/07/2013, 10:00
Andre Zibell
(Ludwig-Maximilians-Univ. Muenchen (DE))
06/07/2013, 10:20
Yacine Haddad
(Ecole Polytechnique (FR))
06/07/2013, 10:30
Fabian Kuger
(Bayerische Julius Max. Universitaet Wuerzburg (DE))
06/07/2013, 11:20
Ozkan Sahin
(Uludag University (TR))
06/07/2013, 11:50
Matteo Alfonsi
(NIKHEF (NL))
Amos Breskin
(Weizmann Institute of Science (IL)),
Shikma Bressler
(Weizmann Institute of Science (IL))
Sebastien Procureur
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
Philippe Gros,
Philippe Gros
(CERN),
Philippe Gros
(Saga University)
A micro pixel chamber (uPIC), the development of which started in 2000 as a kind of micro pattern gas detector, has a high gas gain over 6,000 in stable operation, a large detection area of 900 cm2, and a fine position resolution of about 120 um, and it is used at MeV gamma-ray astronomy, dark matter search, medical imaging, neutron imaging, small-angle X-ray scattering, and so on. However,...
