Proton irradiation effect on SCDs

The Low Energy X-ray Telescope is one of the main payloads on the Hard X-ray Modulation Telescope satellite. Swept charge devices （SCDs） are selected as detectors for the Low Energy X-ray Telescope. As SCDs are sensitive to proton irradiation, irradiation tests were carried out on the HI-13 accelera...

Full description

Saved in:
Bibliographic Details
Published inChinese physics C Vol. 38; no. 8; pp. 60 - 63
Main Author 杨彦佶 陆景彬 王于仨 陈勇 徐玉朋 崔苇苇 李炜 李正伟 李茂顺 刘晓艳 王娟 韩大炜 陈田祥 李承奎 霍嘉 胡渭 张艺 陆波 朱玥 马克岩 吴帝 刘琰 张子良 尹国和 王宇
Format Journal Article
LanguageEnglish
Published 01.08.2014
Subjects
Beams (radiation)
Detectors
Devices
Irradiation
Low energy
Operating temperature
Proton irradiation
SCD
X-ray telescopes
X射线望远镜
充电设备
有效载荷
电荷转移效率
硬X射线调制望远镜
能量分辨率
质子辐照效应
Online AccessGet full text
ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/38/8/086004

Cover

More Information
Summary:The Low Energy X-ray Telescope is one of the main payloads on the Hard X-ray Modulation Telescope satellite. Swept charge devices （SCDs） are selected as detectors for the Low Energy X-ray Telescope. As SCDs are sensitive to proton irradiation, irradiation tests were carried out on the HI-13 accelerator at the China Institute of Atomic Energy. The beam energy was measured to be 10 MeV at the SCD. The proton fluence delivered to the SCD was 3×10^8protons/cm2 over two hours. By comparing the performance before and after irradiation, it is concluded that proton irradiation affects both the dark current and the charge transfer inefficiency of the SCD. The energy resolution of the proton-irradiated SCD is 212 eV@5.9 keV at -60℃, while it before irradiated is 134 eV. Moreover, better performance can be reached by lowering the operating temperature of the SCD in orbit.
Bibliography:11-5641/O4
The Low Energy X-ray Telescope is one of the main payloads on the Hard X-ray Modulation Telescope satellite. Swept charge devices （SCDs） are selected as detectors for the Low Energy X-ray Telescope. As SCDs are sensitive to proton irradiation, irradiation tests were carried out on the HI-13 accelerator at the China Institute of Atomic Energy. The beam energy was measured to be 10 MeV at the SCD. The proton fluence delivered to the SCD was 3×10^8protons/cm2 over two hours. By comparing the performance before and after irradiation, it is concluded that proton irradiation affects both the dark current and the charge transfer inefficiency of the SCD. The energy resolution of the proton-irradiated SCD is 212 eV@5.9 keV at -60℃, while it before irradiated is 134 eV. Moreover, better performance can be reached by lowering the operating temperature of the SCD in orbit.
SCD, HXMT, proton irradiation, energy resolution, readout noise
YANG Yan-Ji, LU Jing-Bin, WANG Yu-Sa, CHEN Yong, XU Yu-Peng, CUI Wei-Wei,LI Wei, LI Zheng-Wei, LI Mao-Shun, LIU Xiao-Yan, WANG Juan, HAN Da-Wei, CHEN Tian-Xiang, LI Cheng-Kui,HUO Jia,HU Wei, ZHANG Yi, LU Bo, ZHU Yue, MA Ke-Yan, WU Di, LIU Yan, ZHANG Zi-Liang,YIN Guo-He,WANG Yu（ 1 College of Physics, Jilin University, No.2699, Qianjin Road, Changchun 130023, China Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences （CAS） 19B Yuquan Road, Beijing 100049, China 3 School of Physical Science and Technology, Yunnan University, Cuihu North Road 2, Kunming 650091, China）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/8/086004