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Electrostatics of micromesh based detectors

S Mukhopadhyay et al 2009 JINST 4 P11004   doi: 10.1088/1748-0221/4/11/P11004  Help

Open Access This is an Open Access article.

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S Mukhopadhyay, N Majumdar and S Bhattacharya
INO Section, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
E-mail: supratik.mukhopadhyay@saha.ac.in

Part of 1st International Conference on Micro-Pattern Gaseous Detectors (MPGD2009)

Abstract. Three-dimensional electrostatic field configurations of several micromesh-based detectors have been estimated using the recently developed neBEM field solver. We have tried to estimate accurately, the field uniformity / distortion due to changes in the geometrical parameters of the mesh and also due to the changes in the detector configuration. In addition, the effect of the drift volume settings on the configuration of the drift field has also been estimated. The effect of these parameters on the electrostatic configuration and hence, on the performance of the detectors, are discussed in the paper.

Key words: Gaseous detectors; Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc); Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MICROMEGAS, InGrid, etc)

Received 16 September 2009, accepted for publication 7 October 2009
Published 5 November 2009

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