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Investigation of Ion Backflow in Bulk Micromegas Detectors
/ Bhattacharya, Purba ; Bhattacharya, Deb Sankar ; Mukhopadhyay, Supratik ; Bhattacharya, Sudeb ; Majumdar, Nayana ; Sarkar, Sandip ; Colas, Paul ; Attie, David
The operation of gas detectors is often limited by secondary effects, originating from avalanche-induced photons and ions. Ion backflow is one of the effects limiting the operation of a gas detector at high flux, by giving rise to space charge which disturbs the electric field locally. [...]
arXiv:1605.02896.-
2016 - 12 p.
- Published in : JINST 10 (2015) P09017
Fulltext: PDF; External link: Preprint
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Performance Studies of Bulk Micromegas of Different Design Parameters
/ Bhattacharya, P. (Saha Inst.) ; Bhattacharya, Sudeb (Saha Inst.) ; Majumdar, Nayana (Saha Inst.) ; Mukhopadhyay, Supratik (Saha Inst.) ; Sarkar, Sandip (Saha Inst.) ; Colas, Paul (CEA, DSM, Saclay) ; Attie, David (CEA, DSM, Saclay)
The present work involves the comparison of various bulk Micromegas detectors having different design parameters. Six detectors with amplification gaps of 64, 128, 192, 220 μm and mesh hole pitch of 63, 78 μm were tested at room temperature and normal gas pressure. [...]
arXiv:1605.02921.-
2016 - 12 p.
- Published in : JINST 9 (2014) C04037
Fulltext: PDF; External link: Preprint
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A Comparative Numerical Study on GEM, MHSP and MSGC
/ Bhattacharya, Purba (Saha Inst.) ; Mukhopadhyay, Supratik (Saha Inst.) ; Majumdar, Nayana (Saha Inst.) ; Bhattacharya, Sudeb (Saha Inst.)
In this work, we have tried to develop a detailed understanding of the physical processes occurring in those variants of Micro Pattern Gas Detectors (MPGDs) that share micro hole and micro strip geometry, like GEM, MHSP and MSGC etc. Some of the important and fundamental characteristics of these detectors such as gain, transparency, efficiency and their operational dependence on different device parameters have been estimated following detailed numerical simulation of the detector dynamics. [...]
arXiv:1204.5916.-
2012 - 14 p.
- Published in : JINST 7 (2012) P09007
Fulltext: PDF; External link: Preprint
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An insulating grid spacer for large-area MICROMEGAS chambers
/ Bernard, D (SUBATECH, Nantes) ; Delagrange, H. (SUBATECH, Nantes) ; d'Enterria, David G. (SUBATECH, Nantes) ; Le Guay, M. (SUBATECH, Nantes) ; Martinez, G. (SUBATECH, Nantes) ; Mora, M.J. (SUBATECH, Nantes) ; Pichot, P. (SUBATECH, Nantes) ; Roy, D. (SUBATECH, Nantes) ; Schutz, Y. (SUBATECH, Nantes) ; Gandi, A. (CERN) et al.
We present an original design for large area gaseous detectors based on the MICROMEGAS technology. This technology incorporates an insulating grid, sandwiched between the micro-mesh and the anode-pad plane, which provides an uniform 200 μm amplification gap. [...]
physics/0103027.-
Geneva : CERN, 2002 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 481 (2002) 144-148
Access to fulltext document: PDF; Fulltext: PDF; External link: physics/0103027 PDF
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Experimental and numerical simulation of a TPC like set up for the measurement of ion backflow
/ Sankar Bhattacharya, Deb (Saha Inst. ; IRFU, SPhN, Saclay ; Jadavpur U.) ; Bhattacharya, Purba (Weizmann Inst.) ; Rout, Prasant Kumar (Saha Inst. ; Weizmann Inst.) ; Mukhopadhyay, Supratik (Saha Inst.) ; Bhattacharya, Sudeb (Saha Inst.) ; Majumdar, Nayana (Saha Inst.) ; Sarkar, Sandip (Saha Inst.) ; Colas, Paul (IRFU, SPhN, Saclay) ; Attie, David (IRFU, SPhN, Saclay) ; Ganjour, Serguei (IRFU, SPhN, Saclay) et al.
Ion backflow is one of the effects limiting the operation of a gaseous detector at high flux, by giving rise to space charge which perturbs the electric field. [...]
arXiv:1710.00624.
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2017. - 11 p.
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Micromegas for Particle Flow Calorimetry
/ Chefdeville, Maximilien (Annecy, LAPP) ; Adloff, C (Annecy, LAPP) ; Dalmaz, A (Annecy, LAPP) ; Drancourt, C (Annecy, LAPP) ; Gaglione, R (Annecy, LAPP) ; Geffroy, N (Annecy, LAPP) ; Jaquemier, J (Annecy, LAPP) ; Karyotakis, Y (Annecy, LAPP) ; Koletsou, I (Annecy, LAPP) ; Peltier, F (Annecy, LAPP) et al.
Gaseous sampling hadron calorimeters can be finely segmented and used to record showers with high spatial resolution. This imaging power can be exploited at a future linear collider experiment where the reconstruction of jets by a Particle Flow method will rely on the tracking capability of the calorimeters. [...]
2013 - 7 p.
- Published in : (2013) , pp. 191-197
Fulltext: PDF;
In : International Conference on Calorimetry for the High Energy Frontier, Paris, France, 22 - 25 Apr 2013, pp.191-197
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Radiation imaging with glass Micromegas
/ Brunbauer, F M (CERN) ; Desforge, D (IRFU, Saclay) ; Ferrer-Ribas, E (IRFU, Saclay) ; Iguaz, F J (IRFU, Saclay) ; Mehl, B (CERN) ; De Oliveira, R (CERN) ; Oliveri, E (CERN) ; Papaevangelou, T (IRFU, Saclay) ; Pizzirusso, O (CERN) ; Pollacco, E C (IRFU, Saclay) et al.
Optically recording scintillation light emitted by MicroPattern Gaseous Detectors (MPGDs) with imaging sensors is a versatile and performant readout modality taking advantage of modern high granularity imaging sensors. To allow scintillation light readout of a detector based on MicroMesh Gaseous Structure (Micromegas) technology, we have integrated a Micromegas on a glass substrate with a transparent anode. [...]
2020 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 955 (2020) 163320
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