@inproceedings{e43b6e0cfdb74c2683ef75054efc653b,
title = "Development of radiation-hardened multi pixel photon counters",
abstract = "We developed several kinds of trial radiation-hardened MPPC models by changing structures; targeting future space applications for gamma-ray detectors. We produced two sample packages with 15 µ-type 1×1 mm2 MPPC elements for every 9 prototypes and then irradiated 150 MeV protons up to 10- and 100 krad for respective samples. We also used 15-, 25-, 50- and 100-µm-type MPPCs with the current design as controls. We evaluated the radiation tolerance mainly by increasing ratio of post-irradiation dark currents. Consequently we found that all trial models achieved significantly improved radiation tolerance peaking at a factor of 7−8 in the best case. We also present differences among control samples due to the various pixel sizes.",
keywords = "MPPC, Radiation damage, SiPM",
author = "T. Nakamori and Y. Kurei and K. Takeuchi and T. Saito and J. Kataoka and T. Fujita and T. Kato and K. Sato and R. Yamada and N. Kawabata and M. Kokubun",
note = "Publisher Copyright: {\textcopyright} 2013 Sociedade Brasileira de Fisica. All Rights Reserved.; 33rd International Cosmic Rays Conference, ICRC 2013 ; Conference date: 02-07-2013 Through 09-07-2013",
year = "2013",
language = "English",
series = "Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013",
publisher = "Sociedade Brasileira de Fisica",
booktitle = "Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013",
address = "Brazil",
}