PICOSEC: Charged particle timing at sub-25 picosecond precision with a Micromegas based detector

Abstract : The prospect of pileup induced backgrounds at the High Luminosity LHC (HL-LHC) has stimulated intense interest in developing technologies for charged particle detection with accurate timing at high rates. The required accuracy follows directly from the nominal interaction distribution within a bunch crossing ( cm, ps). A time resolution of the order of 20–30 ps would lead to significant reduction of these backgrounds. With this goal, we present a new detection concept called PICOSEC, which is based on a “two-stage” Micromegas detector coupled to a Cherenkov radiator and equipped with a photocathode. First results obtained with this new detector yield a time resolution of 24 ps for 150 GeV muons, and 76 ps for single photoelectrons
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https://hal-cea.archives-ouvertes.fr/cea-01894436
Contributor : Caroline Lebe <>
Submitted on : Friday, October 12, 2018 - 2:06:32 PM
Last modification on : Wednesday, September 4, 2019 - 1:40:15 PM

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J. Bortfeldt, F. Brunbauer, C. David, D. Desforge, G. Fanourakis, et al.. PICOSEC: Charged particle timing at sub-25 picosecond precision with a Micromegas based detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2018, 903, pp.317 - 325. ⟨10.1016/j.nima.2018.04.033⟩. ⟨cea-01894436⟩

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