2010 Fiscal Year Final Research Report
Development of radiation-hard p-bulk microstrip detector
| Project/Area Number |
20540291
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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 |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | University of Tsukuba |
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Principal Investigator |
HARA Kazuhiko University of Tsukuba, 大学院・数理物質科学研究科, 講師 (20218613)
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| Project Period (FY) |
2008 – 2010
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| Keywords | P型シリコン検出器 / superLHC / 放射線耐性 / 電極分離 / マイクロストリップ |
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| Research Abstract |
We have developed a radiation hard silicon microstrip sensor to be operational at the LHC upgrade planned at CERN in Europe. The sensor utilizing p-type bulk material can tolerate up to the expected fluence of 10^<15>n/cm^2,showing a full depletion voltage below800V and yielding a collected charge sufficient for precision particle tracking. The sensor can also be biased to1000V without showing micro-discharge after optimizing the P-STOP and P-SPRAY concentrations. The performance concerning strip isolation, interstrip capacitance, and interstrip resistance is found acceptable. We have also designed a detector protection mechanism based on punch through against large signal current. These results led the ATLAS Collaboration to agree that our sensor is the baseline design.
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