Ultra-low material pixel layers for the Mu3e experiment

作者:Berger N; Dittmeier S*; Henkelmann L; Herkert A; Aeschbacher F Meier; Ng Y W; Noehte L O S; Schoening A; Wiedner D
来源:Journal of Instrumentation, 2016, 11(12): C12006.
DOI:10.1088/1748-0221/11/12/C12006

摘要

The upcoming Mu3e experiment will search for the charged lepton flavour violating decay of a muon at rest into three electrons. The maximal energy of the electrons is 53 MeV, hence a low material budget is a key performance requirement for the tracking detector. In this paper we summarize our approach to meet the requirement of about 1% of a radiation length per pixel detector layer. This includes the choice of thinned active monolithic pixel sensors in HV-CMOS technology, ultra-thin flexible printed circuits, and helium gas cooling.

  • 出版日期2016-12