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Delay-line PPAC for high-energy light ions |
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| Authors: | H Kumagai A Ozawa N Fukuda K Sümmerer I Tanihata |
| Affiliation: | a The Institute of Physical and Chemical Research (RIKEN), Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan b Department of Physics, University of Tokyo, Hongo 7-3-1, Tokyo 113-0033, Japan c Gesellschaft für Schwerionenforschung (GSI), Planckstrasse 1, D-64291 Darmstadt, Germany |
| Abstract: | We have developed a delay-line parallel-plate avalanche counter (PPAC) with high detection efficiency for high-energy light ions. A large signal-to-noise ratio was achieved by a newly designed pre-amplifier and the usage of C3F8 gas at a pressure of 30 Torr. The counter has been tested with beams of 90 AMeV 7Li at RIKEN, 340 AMeV 12C at GSI, and 254 AMeV 8B at GSI. We achieved high detection efficiencies (>95%) for all of these ions. Furthermore, we achieved reasonable position and timing resolutions. |
| Keywords: | Parallel-plate avalanche counter Delay-line read out High-energy light ions Detection efficiency Position resolution Time resolution |
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