%0 Journal Article
%T Proton Radiation Damage Experiment on P-Channel CCD for an X-ray CCD camera onboard the Astro-H satellite
%A Koji Mori
%A Yusuke Nishioka
%A Satoshi Ohura
%A Yoshiaki Koura
%A Makoto Yamauchi
%A Hiroshi Nakajima
%A Shutaro Ueda
%A Hiroaki Kan
%A Naohisa Anabuki
%A Ryo Nagino
%A Kiyoshi Hayashida
%A Hiroshi Tsunemi
%A Takayoshi Kohmura
%A Shoma Ikeda
%A Hiroshi Murakami
%A Masanobu Ozaki
%A Tadayasu Dotani
%A Yukie Maeda
%A Kenshi Sagara
%J Physics
%D 2013
%I arXiv
%R 10.1016/j.nima.2013.05.052
%X We report on a proton radiation damage experiment on P-channel CCD newly developed for an X-ray CCD camera onboard the Astro-H satellite. The device was exposed up to 10^9 protons cm^{-2} at 6.7 MeV. The charge transfer inefficiency (CTI) was measured as a function of radiation dose. In comparison with the CTI currently measured in the CCD camera onboard the Suzaku satellite for 6 years, we confirmed that the new type of P-channel CCD is radiation tolerant enough for space use. We also confirmed that a charge-injection technique and lowering the operating temperature efficiently work to reduce the CTI for our device. A comparison with other P-channel CCD experiments is also discussed.
%U http://arxiv.org/abs/1306.5400v1