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Toward 100,000-Pixel Microcalorimeter Arrays Using Multi-absorber Transition-Edge Sensors.
- Source :
- Journal of Low Temperature Physics; Apr2020, Vol. 199 Issue 1/2, p330-338, 9p
- Publication Year :
- 2020
-
Abstract
- We report on the development of multi-absorber transition-edge sensors (TESs), referred to as 'hydras'. A hydra consists of multiple X-ray absorbers each with a different thermal conductance to a TES. Position information is encoded in the pulse shape. With some trade-off in performance, hydras enable very large format arrays without the prohibitive increase in bias and readout components associated with arrays of individual TESs. Hydras are under development for the next generation of space telescope such as Lynx. Lynx is a NASA concept under study that will combine a < 1″ angular resolution optic with 100,000-pixel microcalorimeter array with energy resolution of ΔE<subscript>FWHM</subscript> ~ 3 eV in the soft X-ray energy range. We present first results from hydras with 25-pixels for Lynx. Designs with absorbers on a 25 μm and 50 μm pitch are studied. Arrays incorporate, for the first time, microstrip buried wiring layers of suitable pitch and density required to readout a full-scale Lynx array. The resolution from the coadded energy histogram including all 25-pixels was ΔE<subscript>FWHM</subscript> = 1.66 ± 0.02 eV and 3.34 ± 0.06 eV at an energy of 1.5 keV for the 25 μm and 50 μm absorber designs, respectively. Position discrimination is demonstrated from parameterization of the rise-time. [ABSTRACT FROM AUTHOR]
- Subjects :
- SPACE telescopes
DETECTORS
SOFT X rays
SPECTRAL imaging
Subjects
Details
- Language :
- English
- ISSN :
- 00222291
- Volume :
- 199
- Issue :
- 1/2
- Database :
- Complementary Index
- Journal :
- Journal of Low Temperature Physics
- Publication Type :
- Academic Journal
- Accession number :
- 142665211
- Full Text :
- https://doi.org/10.1007/s10909-020-02362-0