Toward 100,000-Pixel Microcalorimeter Arrays Using Multi-absorber Transition-Edge Sensors

Autor: Stephen J. Smith, Simon R. Bandler, R. Hummatov, Kazuhiro Sakai, Kevin Ryu, N. A. Wakeham, F. M. Finkbeiner, Caroline A. Kilbourne, Joseph S. Adams, John E. Sadleir, S. Beaumont, Jay Chervenak, Aaron M. Datesman, A. R. Miniussi, Edward J. Wassell, F. S. Porter, R. L. Kelly, M. C. Witthoeft
Rok vydání: 2020
Předmět:
Zdroj: Journal of Low Temperature Physics. 199:330-338
ISSN: 1573-7357
0022-2291
Popis: 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 read-out 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 arcsecond angular resolution optic with 100,000-pixel microcalorimeter array with energy resolution of deltaE_FWHM ~ 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 micron and 50 micron 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 deltaE_FWHM = 1.66+/-0.02 eV and 3.34+/-0.06 eV at an energy of 1.5 keV for the 25 micron and 50 micron absorber designs respectively. Position discrimination is demonstrated from parameterization of the rise-time.
7 pages, 5 figures. Low Temperature Detectors 18 Conference, Milan Italy
Databáze: OpenAIRE
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