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previously demonstrated a kilo-pixel array of transition-edge
sensor (TES) microcalorimeters capable of meeting the energy
resolution requirements of the future X-ray Integral Field Unit
(X-IFU) instrument that is being developed for the Advanced
Telescope for High ENergy Astrophysics (ATHENA) observatory
satellite. The TES design in this array was a square device
with side length of 50 μm. Here, we describe studies of TES
designs with small variations of the dimensions, exploring lengths,
parallel to the current direction, ranging from 75μm to 50μm
and widths, perpendicular to the current direction, ranging from
50μm to 15 μm. We describe how these changes impact transition
properties, thermal conductance and magnetic field sensitivity. In
particular, we show that using a TES with a length of 50μm and
width of 30μm may be a promising route to reduce the maximum
time-derivative of the TES current in an X-ray pulse and reduce
the sensitivity of the TES to magnetic field.
Document ID
20220017273
Acquisition Source
Goddard Space Flight Center
Document Type
Accepted Manuscript (Version with final changes)
Authors
Date Acquired
November 16, 2022
Publication Date
March 6, 2023
Publication Information
Publication: IEEE Transactions on Applied Superconductivity
Publisher: IEEE
Volume: 33
Issue: 5
Issue Publication Date: August 1, 2023
ISSN: 1051-8223
e-ISSN: 1558-2515
Subject Category
Funding Number(s)
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
NASA Peer Committee
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