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arXiv · 1610.02021

Ultra-low material pixel layers for the Mu3e experiment

N. Berger·S. Dittmeier·L. Henkelmann·A. Herkert·F. Meier Aeschbacher·Y. W. Ng·L. O. S. Noehte·A. Schöning·D. Wiedner
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Abstract

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 0.1 % 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.

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N. Berger, S. Dittmeier, L. Henkelmann, A. Herkert, F. Meier Aeschbacher, Y. W. Ng, L. O. S. Noehte, A. Schöning, D. Wiedner. 2016-10-06. Ultra-low material pixel layers for the Mu3e experiment. https://doi.org/10.1088/1748-0221%2F11%2F12%2Fc12006

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