Development of the microcalorimeter and anticoincidence detector for the Line Emission Mapper x-ray probe
Journal Article
·
· Journal of Astronomical Telescopes, Instruments, and Systems
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); SLAC
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- Northwestern Univ., Evanston, IL (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Sigma Space Corporation, Lanham, MD (United States); Hexagon US Federal, Chantilly, VA (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Science Systems and Applications, Inc. (SSAI), Lanham, MD (United States)
The Line Emission Mapper (LEM) is an x-ray probe mission concept that is designed to provide unprecedented insight into the physics of galaxy formation, including stellar and black-hole feedback and flows of baryonic matter into and out of galaxies. LEM incorporates a light-weight x-ray optic with a large-format microcalorimeter array. The LEM detector utilizes a 14k pixel array of transition-edge sensors (TESs) that will provide <2.5 eV spectral resolution over the energy range 0.2 to 2 keV, along with a field-of-view of 30 arcmin. The microcalorimeter array and readout builds upon the technology developed for the European Space Agency’s (ESA’s) Athena/x-ray Integral Field Unit. Here, we present a detailed overview of the base- line microcalorimeter design, its performance characteristics, including a detailed energy resolution budget and the expected count-rate capability. In addition, we outline the current status and plan for continued technology maturation. Behind the LEM array sits a high-efficiency TES-based anticoincidence (antico) detector that will reject cosmic-ray background events. We will briefly describe the design of the antico and plan for continued development.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 2403637
- Journal Information:
- Journal of Astronomical Telescopes, Instruments, and Systems, Journal Name: Journal of Astronomical Telescopes, Instruments, and Systems Journal Issue: 4 Vol. 9; ISSN 2329-4124
- Publisher:
- SPIECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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