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GEM are widely used as amplification stages in gaseous detectors exposed to high rates. The GEM consists of a polyimide foil which is coated by two thin copper layers. Charges collected into the holes or created during the amplification…

Instrumentation and Detectors · Physics 2020-07-15 Philip Hauer , Karl Flöthner , Dimitri Schaab , Jonathan Ottnad , Viktor Ratza , Markus Ball , Bernhard Ketzer

A technical description of NEXT-MM and its commissioning and first performance is reported. Having an active volume of ~35 cm drift $\times$ 28 cm diameter, it constitutes the largest Micromegas-read TPC operated in Xenon ever constructed,…

A MICROMEGAS detection amplifier has been incorporated into the design of the TAMU MDM focal plane detector with the purpose of improving the energy resolution and thus, the particle identification. Beam tests showed a factor of 2…

The operation of a Micropattern Gaseous Detector (MPGD) comprising a cascade of two non-standard Gas Electron Multipliers (GEM) made from a 100 micrometer kapton foil was evaluated in pure krypton and in krypton-CO2 mixtures. The final…

Instrumentation and Detectors · Physics 2018-01-12 R. C. Roque , H. Natal da Luz , L. F. N. D. Carramate , C. D. R. Azevedo , J. A. Mir , F. D. Amaro

Surface brightness maps at 12 microns, derived from observations with the Infrared Astronomical Satellite (IRAS), are used to estimate the integrated flux at this wavelength from the Galactic bulge as a function of galactic latitude along…

Astrophysics · Physics 2009-10-30 Jay A. Frogel

Cosmic ray muon has strong penetrating power and no ionizing radiation hazards, which makes it an ideal probe for detecting special nuclear materials. In this paper, a high spatial resolution muon tomography system based on Micromegas…

Instrumentation and Detectors · Physics 2022-02-16 Yu Wang , Zhiyong Zhang , Shubin Liu , Zhongtao Shen , Changqing Feng , Jianguo Liu , Yulin Liu

A wire GEM (WGEM) detector with a gas gap between meshes was constructed. The detector provides the amplification 5x10E5 for the gas mixture of Ar +20% CO2 at atmospheric pressure. As compared with well-known GEM detectors produced by…

Instrumentation and Detectors · Physics 2009-11-26 B. M. Ovchinnikov , V. I. Razin , A. I. Reshetin , S. N. Filippov

The new beam profile measurement for the Antiproton Decelerator (AD) at CERN is based on a single Gas Electron Multiplier (GEM) with a 2D readout structure. This detector is very light, ~0.4% X_0, as required by the low energy of the…

Instrumentation and Detectors · Physics 2012-08-31 Serge Duarte Pinto , Philippe Carrière , Jens Spanggaard , Gerard Tranquille

The requirement of a large number of electronic channels poses a big challenge for Micro-pattern Gas Detector (MPGD) to achieve good spatial resolution. By using the redundancy that at least two neighboring strips record the signal of a…

Instrumentation and Detectors · Physics 2016-08-03 Bin-Xiang Qi , Shu-Bin Liu , Heng Ji , Zhong-Tao Shen , Si-Yuan Ma , Hong-Bang Liu , Wen-Qian Huang , Qi An

The thick GEM (THGEM) [1] is an "expanded" GEM, economically produced in the PCB industry by simple drilling and etching in G-10 or other insulating materials (fig. 1). Similar to GEM, its operation is based on electron gas avalanche…

Medical Physics · Physics 2008-11-26 M. Cortesi , R. Chechik , A. Breskin , G. Guedes , V. Dangendorf , D. Vartzky , D. Bar

The Gas Electron Multiplier detectors with wire and metallic electrodes, with a gas filling in the gap between them were proposed and tested. The main advantage of these Gas Electron Multipliers compared to standard ones consists in their…

Instrumentation and Detectors · Physics 2010-12-22 B. M. Ovchinnikov , V. V. Parusov , Yu. B. Ovchinnikov

Optical readout of MicroPattern Gaseous Detectors (MPGDs) makes use of the high granularity of imaging sensors to achieve good spatial resolution for radiation imaging and particle detection. CF4 is widely used as a scintillating gas…

The Muon ATLAS Micromegas Activity (MAMMA) focuses on the development and testing of large-area muon detectors based on the bulk-Micromegas technology. These detectors are candidates for the upgrade of the ATLAS Muon System in view of the…

Instrumentation and Detectors · Physics 2015-06-03 Georgios Iakovidis , Theodoros Alexopoulos , Georgios Tsipolitis

The demand for a large number of readout channels has been a limiting factor for the application of Micro-pattern Gaseous Detectors (MPGDs) in achieving higher spatial resolution and larger detection areas. This challenge is further…

Instrumentation and Detectors · Physics 2025-05-22 Yu Wang , Shubin Liu , Hao Zhuang , Zhengwu Ding , Zhihang Yao , Changqing Feng , Zhiyong Zhang

In the last few years our group have focused on developing various designs of spark-protected micropattern gaseous detectors featuring resistive electrodes instead of the traditional metallic ones: resistive microstrip counters, resistive…

Instrumentation and Detectors · Physics 2015-06-04 P. Fonte , E. Nappi , P. Martinengo , R. Oliveira , V. Peskov F. Pietropaolo , P. Picchi

We report on the design, production, and testing of advanced double-sided silicon strip detectors under development at the Max-Planck-Institute as part of the Medium Energy Gamma-ray Astronomy (MEGA) project. The detectors are designed to…

Astrophysics · Physics 2009-11-07 P. F. Bloser , F. Schopper , R. Andritschke , G. Kanbach , A. Zoglauer , P. Lechner

In this work we present a systematic study of Micromegas detectors in high pressure gaseous Xenon using trimethylamine (TMA) as quencher gas. Gas gains and energy resolutions for 22.1 keV X-rays are measured for pressures between 1 and 10…

In this work, a part of the Research and Development effort of the PICOSEC detector is presented. The PICOSEC detector is a novel gas-filled detector, based on the Micromegas detector, which has been developed by the RD-51 PICOSEC…

Instrumentation and Detectors · Physics 2020-10-27 K. Paraschou