Proton radiation damage experiment on P-Channel CCD for an X-ray CCD camera onboard the ASTRO-H satellite

Koji Mori, Yusuke Nishioka, Satoshi Ohura, Yoshiaki Koura, Makoto Yamauchi, Hiroshi Nakajima, Shutaro Ueda, Hiroaki Kan, Naohisa Anabuki, Ryo Nagino, Kiyoshi Hayashida, Hiroshi Tsunemi, Takayoshi Kohmura, Shoma Ikeda, Hiroshi Murakami, Masanobu Ozaki, Tadayasu Dotani, Yukie Maeda, Kenshi Sagara

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume731
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Charge-injection
  • P-channel CCD
  • Proton radiation damage

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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