2004 Fiscal Year Final Research Report Summary
Development of apthoton sensor with ultra high sensitivity.
| Project/Area Number |
13554008
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | High Energy Accelerator Research Organization (2004)
The High Energy Accelerator Research Organization (2001-2003) |
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Principal Investigator |
HABA Junji High Energy Accelerator Research Organization, IPNS, Pofessor, 素粒子原子核研究所, 教授 (60180923)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Manobu High Energy Accelerator Research Organization, IPNS, ASS. Professor, 素粒子原子核研究所, 助教授 (00222117)
SUYAMA Motohiro Hamamatsu Photonics Co.Ltd., Researcher, 研究員 (90394139)
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| Project Period (FY) |
2001 – 2004
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| Keywords | photon sensor / avalanche diode / photon counting / multi-pixel |
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| Research Abstract |
A hybrid photo-detector (HPD) consisting of a photocathode and a multi-pixel avalanche diode (MP-AD) has been developed. Our previous studies showed that its inherent potential for high resolution photon counting could be further enhanced by reducing fluctuations in charge loss in the dead layer at the entrance of the MP-AD. In this study, we successfully demonstrate the improvement with the newly developed HPD whose encapsulated MP-AD has a thinner dead layer than before. It is demonstrated that the new HPD has much better energy resolution, which enables clearer counting up to nine photoelectrons. Further enhancement of the photocathode sensitivity of the HPD is also investigated.
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