NDLI: Effects of radiation damage caused by proton irradiation on Multi-Pixel Photon Counters ( MPPCs )

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Effects of radiation damage caused by proton irradiation on Multi-Pixel Photon Counters ( MPPCs )

Content Provider	Semantic Scholar
Author	Matsumura, Toshiro Matsubara, Takatoshi Hiraiwa, Takashi Horie, Kazuyuki Kuze, Manami Miyabayashi, Kenkichi Okamura, Atsushi Sawada, Tomoji Shimizu, Shigenori Shinkawa, Tetsuko Tsunemi, Tomohiro Yosoi, Masaru
Copyright Year	2009
Abstract	We have investigated the effects caused by proton-induced radiation damage on Multi-Pixel Photon Counter (MPPC), a pixelized photon detector developed by Hamamatsu Photonics. The leakage current of irradiated MPPC samples linearly increases with total irradiated doses due to radiation damage, which is not completely recovered even after a year from the irradiation. No significant change has been observed in the gains at least up to 8.0 Gy (9.1×10 n/mm in 1 MeV neutron equivalent fluence, Φeq). The device has completely lost its photon-counting capability due to baseline fluctuations and noise pile-up after 21 Gy irradiation (2.4 × 10 n/mm in Φeq), which might be problematic for some applications, such as ring-imaging Cherenkov detectors. We have found that the pulse-height resolution has been slightly deteriorated after 42 Gy irradiation (4.8×10 n/mm in Φeq), where the measured sample has been illuminated with a few hundred photons. This effect should be considered in the case of energy-measurement applications.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/0901.2430v1.pdf
Language	English
Access Restriction	Open
Subject Keyword	Baseline (configuration management) Columbia (supercomputer) Cyclotrons Detector Device Component Detectors Dimercaprol Dr. Sbaitso Extravasation Microsoft Point-to-Point Compression Neutrons PNMA2 gene Photonics Photons Pixel Proton-Translocating ATPases Protons Radiation Damage Spectral leakage Sports Therapeutic radiology procedure Tomography, Emission-Computed, Single-Photon square millimeter (qualifier value)
Content Type	Text
Resource Type	Article

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