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24 April 2024

» arxiv » 0909.3197

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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 ;
Date:	17 Sep 2009
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.
Source:	arXiv, 0909.3197
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