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A MicroCAT (Micro Compteur A Trous) structure which is used for avalanche charge multiplication in gas filled radiation detectors has been optimised with respect to maximum electron transparency and minimum ion feedback. We report on the…

Instrumentation and Detectors · Physics 2009-11-10 A. Orthen , H. Wagner , H. J. Besch , R. H. Menk , A. H. Walenta , U. Werthenbach

Micro-Pattern Gas Detectors (MPGDs) are extensively employed in modern high-energy and nuclear Physics experiments because of their excellent spatial resolution, high rate capability, and operational stability. Among these, the Gas Electron…

Instrumentation and Detectors · Physics 2026-05-29 Sachin Rana , Md. Kaosor Ali Mondal , Poojan Angiras , Amal Sarkar

A prototype Gas Electron Multiplier (GEM) detector is under construction for medical imaging purposes. A single thick GEM of size 10x10 cm^2 is assembled inside a square shaped air-tight box which is made of Perspex glass. In order to…

Instrumentation and Detectors · Physics 2013-07-05 N. N. Mondal , S. Chattopadhyay , M. R. Dutta Mazumdar , A. K. Dubey , Y. P. Vioygi

The Gas Electron Multiplier (GEM) detector is one of promising particle and radiation detectors that has been improved greatly from previous gas detectors. The improvement includes better spatial resolutions, higher detection rate…

Instrumentation and Detectors · Physics 2015-10-28 Kiadtisak Saenboonruang , Piyakul Kumphiranon , Kittipong Kulasri , Anawat Ritthirong

Gas electron Multipliers (GEM) are a new generation of gaseous avalanche devices in the Micro Patterned Gaseous Detector category. GEMs are widely used in both nuclear and high energy experiments as well as in medical science. Several…

Instrumentation and Detectors · Physics 2022-12-21 Senta V. Greene , Julia Velkovska , Brandon Blankenship , Michael Z. Reynolds , Sourav Tarafdar

Gas Electron Multiplier (GEM) is one of the devices for gas amplification and available as an amplification part of detectors for many experiments. A GEM with a 50 $\mu m$ thick insulator is popular and widely used in many experimental…

Instrumentation and Detectors · Physics 2017-01-20 Tomohisa Ogawa , Yumi Aoki

Gas Electron Multipliers (GEM) are among the more prominent Micro-Pattern Gaseous Detectors (MPGDs) and widely used in high energy particle physics experiments and various related applications. Adoption of different production techniques…

Instrumentation and Detectors · Physics 2024-03-06 Promita Roy , Purba Bhattacharya , Prasant Kumar Rout , Supratik Mukhopadhyay , Nayana Majumdar , Sandip Sarkar

Gaseous detectors are used in both low energy and high energy physics experiments. The present day gaseous detectors, i.e., the Micro-Pattern gaseous detectors (MPGD) are more efficient and fast. Gas Electron multiplier (GEM) is quite well…

Instrumentation and Detectors · Physics 2017-08-08 Deb Sankar Bhattacharya , P K Sahu , Sagarika Swain , Sanjib K Sahu

A study has been carried out to evaluate the performance stability of Gas Electron Multiplier (GEM) chamber prototypes in the laboratory using $^{55}$Fe radiation source with Argon and CO$_2$ gas mixture. This research focuses on the…

Instrumentation and Detectors · Physics 2026-04-10 S. Mandal , S. Gope , S. Das , S. Biswas

In the framework of detector development, Monte Carlo simulations play a key role in the evaluation of the expected performance and the full understanding of the behavior in beam conditions. In particular, a software which simulates the…

Instrumentation and Detectors · Physics 2019-08-21 Lia Lavezzi

An approximate formula has been derived for gain fluctuations in cascaded gaseous detectors such as GEM-s, based on the assumption that the charge collection, avalanche formation and extraction steps are independent cascaded processes. In…

Instrumentation and Detectors · Physics 2016-08-24 Dezső Varga

The use of gaseous Time Projection Chambers enables the detection and the detailed study of rare events due to particles interactions with the atoms of the gas with energy releases as low as a few keV. Due to this capability, these…

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

Gas detectors are one of the pillars of the research in fundamental physics. Since many years, a new concept of detectors, the Micro Pattern Gas Detectors, allows to overcome many of the problems of other types of commonly used detectors,…

Gas electron multipliers (GEM) detectors are gaseous detectors widely used for tracking and imaging applications due to their good position resolution, high efficiency at high irradiation rates, among other factors. In the present work,…

Instrumentation and Detectors · Physics 2023-03-13 Vishal Kumar , Subhendu Das , Promita Roy , Purba Bhattacharyab , Supratik Mukhopadhyay , Nayana Majumdar , Sandip Sarkar

The use of resistive technologies to MPGD detectors is taking advantage for many new applications, including high rate and energetic particle flux scenarios. The recent use of these technologies in large area detectors makes necessary to…

Instrumentation and Detectors · Physics 2015-06-15 J. Galan , D. Attie , A. Chaus , P. Colas , A. Delbart , E. Ferrer-Ribas , I. Giomataris , F. J. Iguaz , A. Gongadze , T. Papaevangelou , A. Peyaud

A Time Projection Chamber (TPC) is an ideal device for the detection of charged particle tracks in a large volume covering a solid angle of almost $4\pi$. The high density of hits on a given particle track facilitates the task of pattern…

We describe a new micro-pattern gas detector structure comprising a multi-layer hole-type multiplier (M-THGEM) combined with two in-built electrode meshes: the Multi-Mesh THGEM-type multiplier (MM-THGEM). Suitable potential differences…

Instrumentation and Detectors · Physics 2018-08-01 Rui de Olivera , Marco Cortesi

A simple methodology for evaluating the dynamic-range of gas avalanche detectors in the laboratory is presented and discussed. It comprises two tools: a charge injector of tunable gain which transfers radiation-induced amplified electron…

Instrumentation and Detectors · Physics 2015-06-17 S. Bressler , L. Moleri , L. Arazi , E. Erdal , A. Rubin , M. Pitt , A. Breskin

Systematic studies on the gain and the energy resolution have been carried out varying the voltage across the GEM foils for both single mask and double mask triple GEM detector prototypes. Variation of the gain and the energy resolution…

Instrumentation and Detectors · Physics 2016-06-22 S. Biswas , D. J. Schmidt , A. Abuhoza , U. Frankenfeld , C. Garabatos , J. Hehner , V. Kleipa , T. Morhardt , C. J. Schmidt , H. R. Schmidt , J. Wiechula