Optical Blocking Performance of CCDs Developed for the X-ray Astronomy Satellite XRISM

XRISM卫星搭载的Xtend系统软X射线成像仪

Soft X-ray Imager of the Xtend system onboard XRISM

该研究介绍XRISM卫星搭载的Xtend系统软X射线成像仪（SXI），基于Hitomi/SXI改进设计，通过地面实验验证其成像光谱等性能满足要求，成功完成飞行前开发。

XRISM 上软 X 射线成像仪的初始运行

Initial operations of the Soft X-ray Imager onboard XRISM

本文总结XRISM卫星上软X射线成像仪（SXI）的初始运行政策与流程，验证了观测流程、系统稳定性等关键内容，优化了运行参数，并报告了遇到的问题及经验教训。

Soft X-ray Imager aboard Hitomi (ASTRO-H)

The Soft X-ray Imager (SXI) is an imaging spectrometer using charge-coupled devices (CCDs) aboard the Hitomi X-ray observatory. The SXI sensor has four CCDs with an imaging area size of $31~{\rm mm} \times 31~{\rm mm}$ arranged in a $2 \times 2$ array. Combined with the X-ray mirror, the Soft X-ray Telescope, the SXI detects X-rays between $0.4~{\rm keV}$ and $12~{\rm keV}$ and covers a $38^{\prime} \times 38^{\prime}$ field-of-view. The CCDs are P-channel fully-depleted, back-illumination type with a depletion layer thickness of $200~μ{\rm m}$. Low operation temperature down to $-120~^\circ{\…

抑制XRISM上Xtend软X射线成像仪成像区外异常电荷侵入的新型CCD驱动技术

New CCD Driving Technique to Suppress Anomalous Charge Intrusion from Outside the Imaging Area for Soft X-ray Imager of Xtend onboard XRISM

针对XRISM卫星Xtend软X射线成像仪CCD在冷却测试中出现的异常电荷从成像区外侵入问题，本文复现并定位其通过电荷注入电极电势结构侵入的机制，提出一种新型CCD驱动技术以抑制侵入并保持成像与光谱性能。

X-Ray Imaging and Spectroscopy Mission (XRISM) 上搭载的 Xtend 望远镜的状态

Status of Xtend telescope onboard X-Ray Imaging and Spectroscopy Mission (XRISM)

本文介绍 XRISM 卫星上 Xtend 望远镜的在轨性能状态，确认其发射前后的测试结果均满足任务要求。

The Complicated Evolution of the ACIS Contamination Layer over the Mission Life of the Chandra X-ray Observatory

The Chandra X-ray Observatory was launched almost 19 years ago and has been delivering spectacular science over the course of its mission. The Advanced CCD Imager Spectrometer is the prime instrument on the satellite, conducting over 90% of the observations. The CCDs operate at a temperature of -120 C and the optical blocking filter in front of the CCDs is at a temperature of approximately -60C. The surface of the OBF has accumulated a layer of contamination over the course of the mission. We have been characterizing the thickness, chemical composition, and spatial distribution of the contamin…