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arXiv · 1512.07102

Recent advances with a hybrid micro-pattern gas detector operated in low pressure H2 and He, for AT-TPC applications

Marco Cortesi·Wolfgang Mittig·Daniel Bazin·Saul Beceiro-Novo·John Yurkon·Rim Soussi Tanani·Michael Wolff·Andreas Stolz
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Abstract

In view of a possible application as a charge-particle track readout for an Active-Target Time Projection Chamber (AT-TPC), the operational properties and performances of a hybrid Micro-Pattern Gaseous Detector (MPGD) were investigated in pure low-pressure Hydrogen (H2) and Helium (He). The detector consists of a MICROMesh GAseous Structure (MICROMEGAS) coupled to a single- or multi-cascade THick Gaseous Electron Multiplier (THGEM) as a pre-amplification stage. This study reports of the effective gain dependence of the hybrid-MPGD at relevant pressure (in the range of 200-760 torr) for different detector arrangements. The results of this work are relevant in the field of avalanche mechanism in low-pressure, low-mass noble gases, in particularly for applications of MPGD end-cap readout for active-target Time Projection Chambers (TPC) in the field of nuclear physics and nuclear astrophysics.

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Marco Cortesi, Wolfgang Mittig, Daniel Bazin, Saul Beceiro-Novo, John Yurkon, Rim Soussi Tanani, Michael Wolff, Andreas Stolz. 2015-12-22. Recent advances with a hybrid micro-pattern gas detector operated in low pressure H2 and He, for AT-TPC applications. https://arxiv.org/abs/1512.07102

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