| Co-Investigator(Kenkyū-buntansha) |
ABRAHAM Seid カリフォルニア大学サンタクールズ校, 教授
YOSHIDA Hajime Professor, Department of 5th, Faculty of Science, Naruto University of Education, 第5部, 教授 (10111775)
KOBAYASHI Shigeharu Professor, Department of Physics, Faculty of Science and Engineering, Sage Unive, 理工学部, 教授 (00039273)
TAMURA Norio Associate Professor, Department of Physics, Faculty of Science, Okayama Universi, 理学部, 助教授 (00025462)
ASAI Makoto Lecturer, Hiroshima Institute of Technology, 電気工学科, 講師 (40192926)
SUGIMOTO Syojiro Professor, Institute for Nuclear Physics, The University of Tokyo, 教授 (20044753)
TAKITA Masato Research Associate, Department of Physics, Faculty of Science, Osaka University, 理学部, 助手 (20202161)
HABA Junji Research Associate, Department of Physics, Faculty of Science, Osaka University, 理学部, 助手 (60180923)
YAMANAKA Taku Associate Professor, Department of Physics, Faculty of Science, Osaka University, 理学部, 助教授 (20243157)
SEIDEN Abraham Professor, Institute for Particle Physics, University of California, Santa Cruz
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| Research Abstract |
With this grant-in-aid, research and development on two types of track detectors, (1)scintillating fiber detector and (2)double sided Silicon Strip Detector (SSD) have been carried out with the purpose of using them as port of the SDC detector to be used for SSC (Super-conducting Super Collider) experiment.
We tested various scintillator materials, and found that one with a new wave length shifter (PMP=1-pheny1-3-mesity1-2-pyrazoline) has output large enough to be usable with fibers of 30 micron diameter as the main body of thedetector. However, when bundled together, cross-talks between the fibers remained a problem to be solved.
SSD detector was developed jointly by US and Japanese members. Development of silicon senser was carried out in Japan while that of read out electronics was done in US. Cooling system and assembly mechanism were ventures of both sides. One unit of the SSC detector we developed has a dimension of 3.4cmX6cmx300 um with 640 pieces of p-type strips at 50 micron interval. Our requirement that the material thickness to be minimum lead to addition of n-type strips on th the other side of the detector allowing two dimensional readout. Many prototypes are made and tested using beams at both KEK at Tsukuba and RCNP at Osaka University. We found successful extraction of signals from both sides can be achieved by inserting p-type strips between n-type strips at the back side. In the final test, the resolution of 15 microns was obtained. Moreover, various materials and shapes of electrodes are tried to make the detector radiation hard. The final sample endured radiation dose of over 10^6 rads.
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