Poster + Paper
21 August 2024 In-orbit operation of Resolve Filter Wheel and MXS
Russell F. Shipman, Shunji Kitamoto, Rob Wolfs, Elisa Costantini, Megan E. Eckart, Carlo Ferrigno, Ludovic Genolet, Nathalie Gorter, Martin Grim, Jan Willem den Herder, Caroline A. Kilbourne, Maurice A. Leutenegger, Erik van der Meer, Misaki Mizumoto, F. Scott Porter, Stéphane Paltani, Makoto Sawada, Simon Strotmann, Masahiro Tsujimoto, Cor P. de Vries
Author Affiliations +
Conference Poster
Abstract
The Resolve soft X-ray spectrometer is the high spectral resolution microcalorimeter spectrometer for the XRISM mission. In the beam of Resolve there is a filter wheel containing X-ray filters. Also in the beam is an active calibration source (the modulated X-ray source (MXS) which can provide pulsed X-rays to facilitate gain calibration.

The filter wheel consists of 6 filter positions. Two open positions, one 55Fe source to aid in early mission spectrometer characterisation and three transmission filters: a neutral density filter, an optical blocking filter and a beryllium filter.

The X-ray intensity, pulse period and pulse separation of the MXS are highly configurable. Furthermore, the switch–on time is synchronized with the space–craft’s internal clock to give accurate start and end times of the pulses.

One of the issues raised during ground testing was the susceptibility of an MXS at high voltage to ambient light. Although measures were taken to mitigate the light leak, the efficacy of those measures must be verified in–orbit. Along with an overview of issues raised during ground testing, this article will discuss the calibration source and the filter performance in–flight and compare with the transmission curves present in the Resolve calibration database.
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Russell F. Shipman, Shunji Kitamoto, Rob Wolfs, Elisa Costantini, Megan E. Eckart, Carlo Ferrigno, Ludovic Genolet, Nathalie Gorter, Martin Grim, Jan Willem den Herder, Caroline A. Kilbourne, Maurice A. Leutenegger, Erik van der Meer, Misaki Mizumoto, F. Scott Porter, Stéphane Paltani, Makoto Sawada, Simon Strotmann, Masahiro Tsujimoto, and Cor P. de Vries "In-orbit operation of Resolve Filter Wheel and MXS", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 130935W (21 August 2024); https://doi.org/10.1117/12.3017279
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KEYWORDS
Tunable filters

X-rays

Calibration

Beryllium

Iron

Chromium

Copper

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