MICROMEGAS chambers for hadronic calorimetry at a future linear collider
C. Adloff, D. Attie, J. Blaha, S. Cap, M. Chefdeville, P. Colas, A., Dalmaz, C. Drancourt, A. Espargiliere, R. Gaglione, R. Gallet, N. Geffroy, I., Giomataris, J. Jaquemier, Y. Karyotakis, F. Peltier, J. Prast, G. Vouters
TL;DR
This paper reports on the development and testing of MICROMEGAS chambers with fine segmentation for hadronic calorimetry, including gas gain studies, response uniformity, efficiency, and digital readout integration.
Contribution
It introduces a new bulk MICROMEGAS prototype with embedded digital electronics and comprehensive testing in particle beams.
Findings
Gas gain depends on pressure, temperature, and gap thickness.
High detection efficiency and uniform response achieved.
Successful integration of digital readout electronics.
Abstract
Prototypes of MICROMEGAS chambers, using bulk technology and analog readout, with 1x1cm2 readout segmentation have been built and tested. Measurements in Ar/iC4H10 (95/5) and Ar/CO2 (80/20) are reported. The dependency of the prototypes gas gain versus pressure, gas temperature and amplification gap thickness variations has been measured with an 55Fe source and a method for temperature and pressure correction of data is presented. A stack of four chambers has been tested in 200GeV/c and 7GeV/c muon and pion beams respectively. Measurements of response uniformity, detection efficiency and hit multiplicity are reported. A bulk MICROMEGAS prototype with embedded digital readout electronics has been assembled and tested. The chamber layout and first results are presented.
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