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Beam test of a small MICROMEGAS DHCAL prototype

Abstract : A sampling hadronic calorimeter with gaps instrumented with thin MICROMEGAS chambers of small pad size and single bit readout is a candidate for an experiment at a future linear collider. Several MICROMEGAS chambers with 1 cm2 anode pads were fabricated using the Bulk technology. Some prototypes equipped with analog readout GASSIPLEX chips were developed for characterisation at the CERN/PS facility. A stack of four chambers and stainless steal absorber plates was used to assess the behaviour of MICROMEGAS in 2 GeV electron showers. Longitudinal and transverse shower profile are shown. The Bulk fabrication process was adapted to laminate a mesh on anode PCBs with front-end chips connected on the backside. It is well suited for the construction of a 1 m3 DHCAL-MICROMEGAS prototype as large and thin chambers can be made. Such chambers with digital readout chips (HARDROC or DIRAC) were fabricated and tested in a beam. First results are presented.
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Submitted on : Monday, November 2, 2009 - 2:24:28 PM
Last modification on : Friday, November 6, 2020 - 3:28:01 AM
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C. Adloff, J. Blaha, M. Chefdeville, A. Dalmaz, C. Drancourt, et al.. Beam test of a small MICROMEGAS DHCAL prototype. 1st International Conference on Micro Pattern Gaseous Detectors (MPGD2009), Jun 2009, Kolympari, Greece. pp.P01013, ⟨10.1088/1748-0221/5/01/P01013⟩. ⟨in2p3-00429310⟩

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