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Development of the microcalorimeter and anticoincidence detector for the Line Emission Mapper x-ray probe

Journal Article · · Journal of Astronomical Telescopes, Instruments, and Systems
 [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [2];  [6];  [3];  [3];  [7];  [3];  [8];  [2];  [2];  [3];  [8]
  1. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); SLAC
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  4. Northwestern Univ., Evanston, IL (United States)
  5. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Sigma Space Corporation, Lanham, MD (United States); Hexagon US Federal, Chantilly, VA (United States)
  6. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
  7. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  8. 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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