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MICROMEGAS chambers for hadronic calorimetry at a future linear collider

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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http://hal.in2p3.fr/in2p3-00419201
Contributor : Claudine Bombar <>
Submitted on : Tuesday, September 22, 2009 - 5:46:56 PM
Last modification on : Wednesday, July 22, 2020 - 9:54:09 AM

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C. Adloff, D. Attie, J. Blaha, S. Cap, M. Chefdeville, et al.. MICROMEGAS chambers for hadronic calorimetry at a future linear collider. Journal of Instrumentation, IOP Publishing, 2009, 4, pp.P11023. ⟨10.1088/1748-0221/4/11/P11023⟩. ⟨in2p3-00419201⟩

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