TY - JOUR
T1 - Proton radiation damage experiment on P-Channel CCD for an X-ray CCD camera onboard the ASTRO-H satellite
AU - Mori, Koji
AU - Nishioka, Yusuke
AU - Ohura, Satoshi
AU - Koura, Yoshiaki
AU - Yamauchi, Makoto
AU - Nakajima, Hiroshi
AU - Ueda, Shutaro
AU - Kan, Hiroaki
AU - Anabuki, Naohisa
AU - Nagino, Ryo
AU - Hayashida, Kiyoshi
AU - Tsunemi, Hiroshi
AU - Kohmura, Takayoshi
AU - Ikeda, Shoma
AU - Murakami, Hiroshi
AU - Ozaki, Masanobu
AU - Dotani, Tadayasu
AU - Maeda, Yukie
AU - Sagara, Kenshi
N1 - Funding Information:
We would like to thank all the SXI team members. We also appreciate Dr. T. Mizuno who kindly provided the cosmic-ray flux model used in this report, Dr. M. Kokubun for useful comments, and the Suzaku XIS team at MIT for making the 55 Fe monitoring data available on-line. This work was supported by JSPS KAKENHI Grant Number 23000004 .
PY - 2013
Y1 - 2013
N2 - 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 109 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.
AB - 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 109 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.
KW - Charge-injection
KW - P-channel CCD
KW - Proton radiation damage
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U2 - 10.1016/j.nima.2013.05.052
DO - 10.1016/j.nima.2013.05.052
M3 - Article
AN - SCOPUS:84888311059
SN - 0168-9002
VL - 731
SP - 160
EP - 165
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -