The X-Ray Microcalorimeter Spectrometer for the International X-Ray Observatory

Journal Article · Wed Dec 16 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3292449· OSTI ID:21325840

Kelley, R L; Bandler, S R; Kilbourne, C A; Porter, F S; Shirron, P; Smith, S J; Whitehouse, P ^[1]; Doriese, W B; Irwin, K ^[2]; Ezoe, Y; Ishisaki, Y; Ohashi, T ^[3]; Fujimoto, R; Sato, K ^[4]; Gottardi, L; Hartog, R den; Herder, J.-W. den; Hoevers, H; Korte, P de; Kuur, J van der ^[5]

---

1. NASA/Goddard Space Flight Center, Greenbelt, MD (United States)
2. National Institute of Standards and Technology, Boulder, CO (United States)
3. Tokyo Metropolitan University, Hachioji, Tokyo (Japan)
4. Faculty of Mathematics and Physics, Kanazawa University, Kanazawa (Japan)
5. SRON Netherlands Institute for Space Research, Utrecht (Netherlands)

The International X-Ray Observatory (IXO) is under formulation by NASA, ESA and JAXA for deployment in 2022. IXO emerged over the last 18 months as the NASA Constellation-X and ESA/JAXA X-Ray Evolving Universe Spectrometer (XEUS) missions were combined. The driving performance requirements for the X-Ray Microcalorimeter Spectrometer (XMS) are a spectral resolution of 2.5 eV over the central 2'x2' in the 0.3-7.0 keV band, and 10 eV to the edge of the 5'x5' field of view (FOV). The XMS is now based on a microcalorimeter array of Transition-Edge Sensor (TES) thermometers with Au/Bi absorbers and a SQUID MUX readout. One of the concepts studied as part of the mission formulation has a core 40x40 array corresponding to a 2'x2' FOV with 3'' pixels surrounded by an outer, annular 52x52 array of 6'' pixels that extends the field of view to 5.4'x5.4' with better than 10 eV resolution. There are several options for implementing the readout and cooling system of the XMS under study in the US, Europe and Japan. The ADR system will have from two to five stages depending on the performance of the cryocooler. Mechanical coolers with sufficient cooling power at 4K are available now, and {approx}2K coolers are under development. In this paper we give an overview of the XMS instrument, and some of the tradeoffs to be addressed for this observatory instrument.

• OSTI ID: 21325840
• Journal Information: AIP Conference Proceedings, Vol. 1185, Issue 1; Conference: LTD13: 13. international workshop on low temperature detectors, Stanford, CA (United States), 20-24 Jul 2009; Other Information: DOI: 10.1063/1.3292449; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BISMUTH
CALORIMETERS
CALORIMETRY
COOLING
COOLING SYSTEMS
EV RANGE
GAMMA SPECTROMETERS
GOLD
HEAT EXCHANGERS
KEV RANGE
PERFORMANCE
RADIATION DETECTORS
READOUT SYSTEMS
RESOLUTION
SENSORS
SQUID DEVICES
TELESCOPE COUNTERS
THERMOMETERS
X-RAY DETECTION