Speaker
Ms
Purba Bhattacharya
(Saha Institute of Nuclear Physics, Kolkata, India)
Description
The bulk Micromegas detector is considered to be a promising candidate for building TPCs for several future experiments including the projected linear colliders. The novel production technique adapted for fabricating the bulk is particularly suited for compact and robust low mass detectors. The standard bulk with a spacing of 128 micron has already established itself as a good choice for its performances in terms of gas gain uniformity, energy and space point resolution, and for its capability to efficiently pave large readout surfaces with minimized dead zone. The present work involves the comparison of this standard bulk with a relatively less used bulk Micromegas detector having a larger amplification gap of 192 micron. Detector gain, energy resolution and electron transparency of these Micromegas have been measured under different conditions in various argon based gas mixtures to evaluate their performance. These measured detector characteristics have also been compared in detail to numerical simulations using the Garfield simulation framework that combines packages such as neBEM, Magboltz and Heed. Further, we have carried out another numerical study to determine the effect of dielectric spacers on different detector features. A comprehensive comparison of the two detectors have been presented and analysed throughout the work.
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Primary author
Ms
Purba Bhattacharya
(Saha Institute of Nuclear Physics, Kolkata, India)
Co-authors
Dr
David Attie
(IRFU/CEA, Saclay, France)
Prof.
Nayana Majumdar
(Saha Institute of Nuclear Physics, Kolkata, India)
Dr
Paul Colas
(IRFU/CEA, Saclay, France)
Prof.
Sandip Sarkar
(Saha Institute of Nuclear Physics, Kolkata, India)
Prof.
Sudeb Bhattacharya
(Saha Institute of Nuclear Physics, Kolkata, India)
Prof.
Supratik Mukhopadhyay
(Saha Institute of Nuclear Physics, Kolkata, India)
