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Evaluation of the new dE/dx counter (newIH) prototype for the DIRAC experiment at CERN PS TAKEUTCHI, Fujio To accept a larger intensity beam, a new dE/dx counter（IH）for the DIRAC（PS212）spectrometer was designed. First one-layer prototype with 12 strips was built and tested in the DIRAC T8 beam line in 2009. Data were taken using the DIRAC DAQ. This is the preliminary report on the data analyzed. The time resolution obtained from the prototype was 1.14 ns RMS. This mediocre time resolution is probably due to the smallness of the average number of collected photoelectrons. The mechanical design should also be reviewed. 4 KJ00006448879 P 研究論文 Paper 2010-07 eng departmental bulletin paper http://hdl.handle.net/10965/00002595 https://ksu.repo.nii.ac.jp/records/2604 AA11815191 1347-3980 京都産業大学先端科学技術研究所所報 The bulletin of the Research Institute of Advanced Technology Kyoto Sangyo University 9 59 76 https://ksu.repo.nii.ac.jp/record/2604/files/KJ00006448879.pdf application/pdf 1.1 MB 2018-01-28