Study on GASTOF - A 10 ps resolution timing detector
(2014) Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment — Vol. 762, p. 77-84 (2014)
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- GASTOF (Gas Time Of Flight) is a type of fast-time detector affiliated to the HPS (High Precision Spectrometer) project which is a forward physics collaborator within CMS. It is a picosecond time resolution Cherenkov gas detector using very fast single anode micro-channel plate photomultiplier (Hamamatsu R3809U-50 or Photek 210) as a photon detector. We firstly measured characteristics of these two types of MCP-PMTs by a fast laser pulse in lab. Then two GASTOF detectors both equipped with a Hamamatsu R3809U-50 tube were studied in a beam test at CERN. According to the analysis of beam test data, the average number of photoelectrons (phe) was 2.0 for both phototubes. By making a cut on the number of photoelectrons such that the mean phe was 3.6 in one phototube and 3.2 in another, we obtained a time resolution of σ~11.7 picosecond (ps) and σ~8.2ps. © 2014 Elsevier B.V.
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Bonnet, J.-L., Piotrzkowski, K., & Liao, J. (2014). Study on GASTOF - A 10 ps resolution timing detector. Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 762, 77-84. https://doi.org/10.1016/j.nima.2014.06.003 (Original work published 2014)