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HK: Fachverband Physik der Hadronen und Kerne

HK 38: Instrumentation X

HK 38.5: Talk

Wednesday, March 16, 2016, 15:15–15:30, S1/01 A2

High Resolution Time-of-Flight (TOF) Detector for Particle Identification — •Merlin Böhm, Albert Lehmann, Markus Pfaffinger, and Fred Uhlig for the PANDA collaboration — Physikalisches Institut, Universität Erlangen-Nürnberg

Several prototype tests were performed with the PANDA DIRC detectors at the CERN T9 beam line. A mixed hadron beam with pions, kaons and protons was used at momenta from 2 to 10 GeV/c. For these tests a good particle identification was mandatory.

We report about a high resolution TOF detector built especially for this purpose. It consists of two stations each consisting of a Cherenkov radiator read out by a Microchannel-Plate Photomultiplier (MCP-PMT) and a Scintillating Tile (SciTil) counter read out by silicon photomulipliers (SiPMs). With a flight path of 29 m a pion/kaon separation up to 5 GeV/c and a pion/proton separation up to 10 GeV/c was obtained. From the TOF resolutions of different counter combinations the time resolution (sigma) of the individual MCP-PMTs and SciTils was determined. The best counter reached a time resolution of 50 ps.

- Gefördert durch BMBF und GSI -