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Proceedings Paper

Calibration sources for the soft x-ray spectrometer instrument on ASTRO-H
Author(s): C. P. de Vries; P. Lowes; J. W. den Herder; H. Aarts; D. Haas; K. Mitsuda; N. Y. Yamasaki; R. Kelley; C. Kilbourne; K. Gendreau
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Paper Abstract

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.

Paper Details

Date Published: 17 September 2012
PDF: 7 pages
Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 844353 (17 September 2012); doi: 10.1117/12.924146
Show Author Affiliations
C. P. de Vries, SRON Netherlands Institute for Space Research (Netherlands)
P. Lowes, SRON Netherlands Institute for Space Research (Netherlands)
J. W. den Herder, SRON Netherlands Institute for Space Research (Netherlands)
H. Aarts, SRON Netherlands Institute for Space Research (Netherlands)
D. Haas, SRON Netherlands Institute for Space Research (Netherlands)
K. Mitsuda, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
N. Y. Yamasaki, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
R. Kelley, NASA Goddard Space Flight Ctr. (United States)
C. Kilbourne, NASA Goddard Space Flight Ctr. (United States)
K. Gendreau, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 8443:
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Stephen S. Murray; Jan-Willem A. den Herder, Editor(s)

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