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1st International Conference on Micro Pattern Gaseous Detectors (MPGD2009), Kolympari : Grèce (2009)
Beam test of a small MICROMEGAS DHCAL prototype
C. Adloff1, J. Blaha1, M. Chefdeville1, A. Dalmaz1, C. Drancourt1, A. Espargilière1, R. Gaglione1, Y. Karyotakis1, J. Prast1, G. Vouters1

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.
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
Physique/Physique/Instrumentations et Détecteurs

Physique/Physique des Hautes Energies - Expérience
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