PICOSEC: Charged particle timing at sub-25 picosecond precision with a Micromegas based detector
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Date
2018-09-21
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Elsevier
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 (sigma(2) similar to 5 cm, sigma(t) similar to 170 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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Keywords
Instruments & instrumentation, Nuclear science & technology, Physics, Picosecond timing, MPGD, Micromegas, Photocathodes, Timing algorithms, Gaseous detector, Electron, Field emission cathodes, Germanium compounds, Photocathodes, Timing circuits, Charged particle detection, Micromegas detector, Pico-second precision, Single photoelectrons, Timing algorithms, Charged particles
Citation
Bortfeldt, J. vd. (2018). ''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, 903, 317-325.