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arXiv · 1712.05256

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

J. Bortfeldt·F. Brunbauer·C. David·D. Desforge·G. Fanourakis·J. Franchi·M. Gallinaro·I. Giomataris·D. González-Díaz·T. Gustavsson·C. Guyot·F. J. Iguaz·M. Kebbiri·P. Legou·J. Liu·M. Lupberger·O. Maillard·I. Manthos·H. Müller·V. Niaouris·E. Oliveri·T. Papaevangelou·K. Paraschou·M. Pomorski·B. Qi·F. Resnati·L. Ropelewski·D. Sampsonidis·T. Schneider·P. Schwemling·L. Sohl·M. van Stenis·P. Thuiner·Y. Tsipolitis·S. E. Tzamarias·R. Veenhof·X. Wang·S. White·Z. Zhang·Y. Zhou
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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 ($σ_z\sim5$ cm, $σ_t\sim170$ 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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J. Bortfeldt, F. Brunbauer, C. David, D. Desforge, G. Fanourakis, J. Franchi, M. Gallinaro, I. Giomataris, D. González-Díaz, T. Gustavsson, C. Guyot, F. J. Iguaz, M. Kebbiri, P. Legou, J. Liu, M. Lupberger, O. Maillard, I. Manthos, H. Müller, V. Niaouris, E. Oliveri, T. Papaevangelou, K. Paraschou, M. Pomorski, B. Qi, F. Resnati, L. Ropelewski, D. Sampsonidis, T. Schneider, P. Schwemling, L. Sohl, M. van Stenis, P. Thuiner, Y. Tsipolitis, S. E. Tzamarias, R. Veenhof, X. Wang, S. White, Z. Zhang, Y. Zhou. 2018-03-14. PICOSEC: Charged particle timing at sub-25 picosecond precision with a Micromegas based detector. https://doi.org/10.1016/j.nima.2018.04.033

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