Resistive Micromegas for sampling calorimetry, a study of charge-up effects.

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Title: Resistive Micromegas for sampling calorimetry, a study of charge-up effects.
Authors: Chefdeville, M.1 chefdevi@lapp.in2p3.fr, Karyotakis, Y.1, Geralis, T.2, Titov, M.3
Source: Nuclear Instruments & Methods in Physics Research Section A. Jul2016, Vol. 824, p510-511. 2p.
Subjects: Gas detectors, Calorimetry, Nuclear physics, Ionization (Atomic physics), Mathematical optimization
Abstract: Micromegas, as a proportional and compact gaseous detector, is well suited for sampling calorimetry. The limitation of occasional sparking has now been lifted by means of resistive electrodes but at the cost of current-dependent charge-up effects. These effects are studied in this contribution, with an emphasis on gain variations during operation at high particle rate and under heavy ionisation. Results are reproduced by a simple model of charging-up which will be used for detector design optimisation in the future. [ABSTRACT FROM AUTHOR]
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Description
Abstract:Micromegas, as a proportional and compact gaseous detector, is well suited for sampling calorimetry. The limitation of occasional sparking has now been lifted by means of resistive electrodes but at the cost of current-dependent charge-up effects. These effects are studied in this contribution, with an emphasis on gain variations during operation at high particle rate and under heavy ionisation. Results are reproduced by a simple model of charging-up which will be used for detector design optimisation in the future. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2015.11.073