Radiation tolerance of FPCCD vertex detector for the ILC

Shunsuke Murai; Akimasa Ishikawa; Tomoyuki Sanuki; Akiya Miyamoto; Yasuhiro Sugimoto; Hisao Sato; Hirokazu Ikeda; Hitoshi Yamamoto

arXiv · 1703.05603

Radiation tolerance of FPCCD vertex detector for the ILC

Shunsuke Murai·Akimasa Ishikawa·Tomoyuki Sanuki·Akiya Miyamoto·Yasuhiro Sugimoto·Hisao Sato·Hirokazu Ikeda·Hitoshi Yamamoto

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Abstract

The Fine Pixel CCD (FPCCD) is one of the candidate sensor technologies for the ILC vertex detector. The vertex detector is located near the interaction point, thus high radiation tolerance is required. Charge transfer efficiency of CCD is degraded by radiation damage which makes traps in pixels. We measured charge transfer inefficiency (CTI) of a neutron irradiated FPCCD prototype. We observed a degradation of CTI compared with non-irradiated CCD. To improve the CTI of irradiated CCD, we performed the fat-zero charge injection to fill the traps. In this paper, we report a status of CTI improvement.

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Shunsuke Murai, Akimasa Ishikawa, Tomoyuki Sanuki, Akiya Miyamoto, Yasuhiro Sugimoto, Hisao Sato, Hirokazu Ikeda, Hitoshi Yamamoto. 2017-03-16. Radiation tolerance of FPCCD vertex detector for the ILC. https://arxiv.org/abs/1703.05603

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