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.
@article{arxiv.1703.05603,
title = {Radiation tolerance of FPCCD vertex detector for the ILC},
author = {Shunsuke Murai and Akimasa Ishikawa and Tomoyuki Sanuki and Akiya Miyamoto and Yasuhiro Sugimoto and Hisao Sato and Hirokazu Ikeda and Hitoshi Yamamoto},
journal= {arXiv preprint arXiv:1703.05603},
year = {2017}
}
Comments
Talk presented at the International Workshop on Future Linear Colliders (LCWS2016), Morioka, Japan, 5-9 December 2016. C16-12-05.4