Calibration sources for the soft x-ray spectrometer instrument on ASTRO-H
Calibration sources for the soft x-ray spectrometer instrument on ASTRO-H
复制标题
ASTRO-H 上软 X 射线光谱仪的校准源
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
K. Gendreau
中科院分区：
文献类型：
--
作者：
C. D. de Vries;P. Lowes;J. D. den Herder;H. Aarts;D. Haas;K. Mitsuda;N. Yamasaki;R. Kelley;C. Kilbourne;K. Gendreau
SXS仪器是计划用于日本ASTRO-H卫星的软X射线微量热光谱仪，计划于2014年发射。在本文中，我们描述了在该仪器中使用的X射线校准源。这些光源使用光敏光电阴极来产生电子，电子又产生X射线。这种设计具有允许所生成的X射线的快速离散脉动的独特性质。这使得仪器的能量标度校准与天文观测同时进行，而不会增加天文数据的背景。已经制造了飞行模型源，其中一些在过去几个月里一直在运行，以监测它们的行为。在这里，我们报告这些来源的特性和性能。此外，我们将详细说明能量校准的性质和预期准确度，以及在给定校准源强度及其操作模式的情况下，与仪器预期稳定性的关系。
The SXS instrument is the Soft X-ray micro-calorimeter Spectrometer planned for the Japanese ASTRO-H satellite, scheduled to be launched in 2014. In this paper we describe the X-ray calibration sources used in this instrument. These sources use light sensitive photo-cathodes to generate electrons, which in turn generate the X-rays. This design has the unique property to allow for fast discrete pulsations of the generated X-rays. This enables the energy scale calibration of the instrument simultaneously with astronomical observations, without adding to the background in the astronomical data. Flight-model sources have been made, and a number of them have been operating in the past several months to monitor their behaviour. Here we report on the characterisation and performance of these sources. In addition, we will elaborate on the nature and expected accuracy of the energy calibration, in relation to the expected stability of the instrument, given the calibration source strength and its mode of operation.