2001 Fiscal Year Final Research Report Summary
Development of High Cost-performance High-voltage Supply/Monitor/Control for Imaging Detector
| Project/Area Number |
11640253
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ISHIKAWA Fumio Univ. Tokyo, ICRR, Assistant Prof., 宇宙線研究所, 助手 (30092133)
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| Co-Investigator(Kenkyū-buntansha) |
ARAI Yasuo KEK, IPNS, Assistant Prof., 高エネルギー加速器研究機構・素粒子原子核研究所, 助手 (90167990)
SASAKI Makoto Univ. Tokyo, ICRR, Associate Prof., 宇宙線研究所, 助教授 (40242094)
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| Project Period (FY) |
1999 – 2000
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| Keywords | High-voltage Supply / Monitor Control / Imaging Device / Photo-multiplier |
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| Research Abstract |
There has been a significant progress on observation method using imaging detector in the field of cosmic ray research. In may cases of cosmic ray research projects, they install an array matrix of photo-multipliers (PMTs) in their imaging camera devices on the focus plane of the potical system as basic components. In these cases, they need to supply and distribute high-voltage onto hundreds of PMTs in each camera in order to keep the gain of camera uniform and stable. The stability of high-voltage supply can contribute to the determination precision of primary energies of cosmic rays. One can solve the problem if he keeps monitoring each supplied voltage in an online way and feedback the results to stabilize the total gain of each PMT. The cost-performance is important because of the large number of supply channels too. To fulfill the above basic requirements, we determine the goals of our high-voltage power supply/monitor/control system at the beginning of this development studies as follows:
Output voltage dynamic range: 0〜1100V
Setting resolution: Less than 1V
Monitoring resolution: Less than 1V
Max. supply current to PMT: 0.5 mA
Ripple P-P 1OmV
Mass production cost: 3000yen/ch
We have done the R＆D and the achievements are listed as follows:
Non-linearity: <0.6V (Boss for setting and monitoring)
Voltage offset ch-by-ch deviation <0.12V
Temperature dependence <0.01 V/℃
Further more, we have recognized that the present mass production cost estimate is 3,800yen/ch totally including high-voltage supplies, distribution, monitor, and control systems. We can conclude that the goals set at the beginning has been almost perfectly achieved on the performance and cost aspects.
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[Publications] SASAKI. M.; AOKI, T.; ARAI, Y.; FUKUTOMI, M.; HASHIMOTO, K.; HONDA, K.; ISHIKAWA, F.; JOBASHI, M.; MANAGO, N.; MASUDA, M.; SAKAI, M.; TANAKA, Y.; TSUJIKAWA, Y.: ""Frontend Electronics of the Telescope Array Detector"/"Proc. 27th Int Cosmic Ray Conf. (Hamburg). 865. (2001)
Description
「研究成果報告書概要(欧文)」より
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[Publications] SASAKI, M.; AOKI, T.; ARAI, Y.; FUKUTOMI, M.; HASHIMOTO, K.; HONDA, K.; JOBASHI, M.; MANAGO, N.; MASUDA, M.; SAKAI, M.; TANAKA, Y; TSUJIKAWA, Y.: ""The Trigger System of the Telescope Array Detector""Proc. 27th Int Cosmic Ray Conf. (Hamburg). 869. (2001)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Y. Arai (KEK, Tsukuba), T. Aoki (Tokyo U., ICR), M. Fukutomi (Nagasaki Inst. Appl. Sci/), K. Hashimoto (Yamanashi U.), K. Honda (Yamanashi U.), F. Ishikawa, N. Manage, M. Sasaki (Tokyo U., ICR), K. Satake (Nagasaki Inst. Appl. Sci.), M. Takeda (Tokyo U., ICR), Y. Tanaka (Nagasaki Inst. Appl. Sci.).: ""DEVELOPMENT OF FRONT-END ELECTRONICS FOR THE TELESCOPE ARRAY PROJECT.""KEK-PREPRINT. 99. 22 (1999)
Description
「研究成果報告書概要(欧文)」より
