Molière radius measurement using a compact prototype of LumiCal in a test set-up

Veta Ghenescu

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arXiv · 1811.11432

Molière radius measurement using a compact prototype of LumiCal in a test set-up

Veta Ghenescu

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Abstract

The FCAL collaboration has performed a design study for luminometers at future electronpositron colliders. Compact sampling calorimeters with precisely positioned silicon sensors and a fast readout will reach the necessary performance even in the presence of background from beamstrahlung and two-photon processes. A prototype calorimeter has been built with special focus on ultra-thin fully instrumented sensor planes to ensure a very small effective Molière radius. Preliminary results of measurements in a 5 GeV electron beam are presented.

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Veta Ghenescu. 2018-11-28. Molière radius measurement using a compact prototype of LumiCal in a test set-up. https://arxiv.org/abs/1811.11432

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