Abstract
One of the instruments on the International X-ray Observatory (IXO), under study with NASA, ESA and JAXA, is the X-ray Microcalorimeter Spectrometer (XMS). This instrument, which will provide high spectral resolution images, is based on X-ray micro-calorimeters with Transition Edge Sensor (TES) with absorbers that consist of metal and semimetal layers and a multiplexed SQUID readout. The requirements for this instrument are demanding. In the central array (40 x 40 pixels) an energy resolution of < 2.5 eV is required, whereas the energy resolution of the outer array is more relaxed (∼ 10 eV) but the detection elements have to be a factor 16 larger in order to keep the number of read-out channels acceptable for a cryogenic instrument. Due to the large collection area of the IXO optics, the XMS instrument must be capable of processing high counting rates, while maintaining the spectral resolution and a low deadtime. In addition, an anti-coincidence detector is required to suppress the particle-induced background. In this paper we will summarize the instrument status and performance. We will describe the results of design studies for the focal plane assembly and the cooling systems. Also the system and its required spacecraft resources will be given.
Original language | English (US) |
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Title of host publication | Space Telescopes and Instrumentation 2010 |
Subtitle of host publication | Ultraviolet to Gamma Ray |
DOIs | |
State | Published - 2010 |
Event | Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray - San Diego, CA, United States Duration: Jun 28 2010 → Jul 2 2010 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 7732 |
ISSN (Print) | 0277-786X |
Other
Other | Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray |
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Country/Territory | United States |
City | San Diego, CA |
Period | 6/28/10 → 7/2/10 |
Keywords
- International X-ray Observatory
- Micro-calorimeter
- Missions
- X-ray
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering