Bochum 2009 – scientific programme
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HK: Fachverband Hadronen und Kerne
HK 76: Accelerators and Instrumentation II
HK 76.8: Talk
Thursday, March 19, 2009, 18:45–19:00, H-ZO 90
Ultra-Fast Timing with Plastic Scintillators — •Robert Hoischen1,2, Stephane Pietri2, Wawrzyniec Prokopowicz2, Henning Schaffner2, Jürgen Gerl2, Dirk Rudolph1, Hans Jürgen Wollersheim2, and Nikolaus Kurz2 — 1Department of Physics, Lund University, S-22100 Lund, Sweden — 2Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
Fast timing detectors for time-of-flight measurements are essential identification tools for isotopes studied at fragment seperators at major heavy-ion research facilities. While today’s standard technique of utilizing a plastic scintillator read out by few photomultiplier tubes proofs to be efficient, it does not provide the required time resolution for future key experiments at, for example, the Super-FRS at FAIR. A common present-day approach is to use diamond detectors instead. While they do provide a better time resolution compared to scintillators, they are more difficult to use and far more expensive. Results from tests using a new design approach with standard materials will be presented. This leads to a much improved performance, but remains both cost-efficient, compact, and reliable. The design goals and how to accomplish them will be exemplified by the LYCCA (Lund-York-Cologne CAlorimeter) detector aiming for fast-beam experiments at HISPEC within NUSTAR.