硬X射线探测器地面标定装置的研究

doi:10.3969/j.issn.1000-1158.2018.z1.30

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摘要 20.8~301.9keV单能X射线的研究,为星载探测器的地面标定提供了基础保障,建立了2套硬X射线探测器地面标定装置。其中一套为双晶标定装置,配备管电压220kV与600kV的X射线光机,一套双晶单色器,单色器晶体采用Si(220)晶体与Si(551)晶体,通过调节布拉格衍射角可以分别实现20.8~70.1keV的单能X射线束流与46.6~196.5keV的单能X射线束流出光。另外一套为单晶标定装置,配备600kV的X射线光机与单晶单色器,采用Si(551)晶体可以实现33.6~301.9keV的单能X射线。两套硬X射线探测器地面标定装置共同实现了20.8~301.9keV的单能X射线。双晶标定装置能量分辨率1.80%@23.2keV、1.19%@70.1keV;单晶标定装置能量分辨率1.53%@92.6keV、5.55%@301.9keV,可以满足引力波电磁对应体全天候监视器、空间多波基天文变源监测卫星以及先进天机太阳天文台卫星的地面标定的需求。

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关键词 ：计量学, X射线, 单色器, 布拉格衍射, 能量分辨率

Abstract：The research of 20.8~301.9keV monochromatic X-rays provides basic guarantee for ground calibration of space-borne detectors. Two sets of hard X-ray detector ground calibration facilities were established. One of them is a double-crystal calibration facility equipped with X-ray tubes with tube voltages of 220kV and 600kV, a set of double-crystal monochromator. And monochromator crystal adopts Si(220) crystal and Si(551) crystal, by means of adjusting Bragg diffraction angles can achieve monochromatic X-rays beam of (20.8~70.1) keV and monochromatic X-rays beam of (46.6~196.5) keV respectively. The other set is a single crystal calibration facility equipped with a 600kV X-ray tube and a single crystal monochromator. Using Si(551) crystal can realize monochromatic X-rays of (33.6~301.9) keV. Two sets of hard X-ray detector ground calibration facilities realized monochromatic X-rays of (20.8~301.9) keV together.The energy resolution of the double crystal calibration facility is 1.80%@23.2keV, 1.19%@70.1keV; the energy resolution of the single crystal calibration facility is 1.53%@92.6keV, 5.55%@301.9keV, it can meet the calibration requirement of Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor, Space Variable Objects Monitor and Advanced Space-based Solar Observatory.

Key words： metrology X-ray monochromator Bragg diffraction spectrum

PACS:

TB98

基金资助:中国计量科学院基本科研业务费(AKYCX1809)

通讯作者: 吴金杰为本文通讯作者。wujj@nim.ac.cn

作者简介: 侯懂杰(1992-),男,河南虞城人,中国计量科学研究院在读硕士研究生,研究方向为X射线探测器标定研究。programerhou@163.com

引用本文:

侯懂杰,,吴金杰,郭思明,吴冲. 硬X射线探测器地面标定装置的研究[J]. 计量学报, 2018, 39(6A): 137-.
HOU Dong-jie,WU Jin-jie,GUO Si-ming,WU Chong. Research of Hard X-ray Detector Ground Calibration Facility. Acta Metrologica Sinica, 2018, 39(6A): 137-.

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