Resistive micromegas for sampling calorimetry

Abstract : Micromegas is an attractive option for a gaseous sampling calorimeter. It delivers proportional and fast signals, achieves high efficiency to minimum ionising particles with a compact design and shows well-uniform performance over meter-square areas. The current R&D focuses on large- size spark-protected Micromegas with integrated front-end electronics. It targets an application at future linear colliders (LC) and possible upgrades of LHC experiments for the running at high luminosity. In the later case, occasional sparking should be suppressed to avoid dead-time and technical solutions using resistive coatings are investigated. Small prototypes of resistive and non-resistive Micromegas were constructed and tested in a beam at DESY. Results are reported with emphasis on the impact of the resistive layer on the detector performance.
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C. Adloff, M. Chefdeville, A. Delmaz, C. Drancourt, R. Gaglione, et al.. Resistive micromegas for sampling calorimetry. TIPP 2014 - Third International Conference on Technology and Instrumentation in Particle Physics, Jun 2014, Amsterdam, Netherlands. pp.054. ⟨in2p3-01223326⟩

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