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16-19 January 2018
Zurich, Switzerland
Europe/Berlin timezone

Picosec: a Micromegas based detector with a timing precision of 24 ps for 150 GeV muons

17 Jan 2018, 11:00
ETH HG E 1.2 (Zurich, Switzerland)

ETH HG E 1.2

Zurich, Switzerland

Rämistrasse 101, 8092 Zürich, Schweiz


Dr Francisco Jose Iguaz Gutierrez (University of Zaragoza)


The Picosec detection concept consists in a two-stage Micromegas detector coupled to a Cerenkov radiator and equipped with a photocathode. A 1cm2 area prototype has already been built and characterized to prove this concept. A single-photoelectron response of 76 ps has been measured with a femtosecond UV laser at CEA/IRAMIS, while a time resolution of 24 ps with a mean yield of 10 photoelectrons has been measured at the CERN SPS extraction lines with MIPs. This talk will present the main results of this prototype, but it will particularly focus on the performance of the different detector configurations tested in 2016 and 2017 beam campaigns. In these tests, several types of readouts (bulk, thin bulk, resistive) and photocathodes (CsI based, pure metallic, diamond) were characterized with muons and pions. Finally, the prospects of building a Picosec detector for a running or future experiment will be discussed. In particular, the scaling strategies to a large area coverage with a multichannel readout plane, the R&D on solid converters for building a robust photocathode, the front-end electronics or the expected performance at high rate.

Primary author

Dr Francisco Jose Iguaz Gutierrez (University of Zaragoza)

Presentation Materials