Study of Dissipative Losses in AC-Biased Mo/Au Bilayer Transition-Edge Sensors

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dc.contributor.authorSakai, Kazuhiro
dc.contributor.authorAdams, J. S.
dc.contributor.authorBandler, S. R.
dc.contributor.authorChervenak, J. A.
dc.contributor.authorMiniussi, Antoine
dc.contributor.authorSmith, S. J.
dc.contributor.authorWakeham, Nicholas
dc.contributor.authoret al
dc.date.accessioned2022-01-21T16:43:56Z
dc.date.available2022-01-21T16:43:56Z
dc.date.issued2018-06-26
dc.descriptionKazuhiro Sakai, · J. S. Adams, · S. R. Bandler · J. A. Chervenak · A. M. Datesman, · M. E. Eckart · F. M. Finkbeiner, · R. L. Kelley · C. A. Kilbourne · A. R. Miniussi, · F. S. Porter · J. S. Sadleir ·Stephen J. Smith, · Nicholas Wakeham, · E. J. Wassell, · W. Yoon, · H. Akamatsu · M. P. Bruijn · L. Gottardi · B. D. Jackson · J. van der Kuur · B. J. van Leeuwen · A. J. van der Linden · H. J. van Weers · M. Kivirantaen_US
dc.description.abstractWe are developing kilo-pixel arrays of transition-edge sensors (TESs) for the X-ray Integral Field Unit on ESA’s Athena observatory. Previous measurements of AC biased Mo/Au TESs have highlighted a frequency-dependent loss mechanism that results in broader transitions and worse spectral performance compared to the same devices measured under DC bias. In order to better understand the nature of this loss, we are now studying TES pixels in different geometric configurations. We present measurements on devices of different sizes and with different metal features used for noise mitigation and X-ray absorption. Our results show how the loss mechanism is strongly dependent upon the amount of metal in close proximity to the sensor and can be attributed to induced eddy current coupling to these features. We present a finite element model that successfully reproduces the magnitude and geometry dependence of the losses. Using this model, we present mitigation strategies that should reduce the losses to an acceptable level.en_US
dc.description.urihttps://link.springer.com/article/10.1007%2Fs10909-018-2002-4en_US
dc.format.extent9 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2br2w-clly
dc.identifier.citationSakai, K., Adams, J.S., Bandler, S.R. et al. Study of Dissipative Losses in AC-Biased Mo/Au Bilayer Transition-Edge Sensors. J Low Temp Phys 193, 356–364 (2018). https://doi.org/10.1007/s10909-018-2002-4en_US
dc.identifier.urihttps://doi.org/10.1007/s10909-018-2002-4
dc.identifier.urihttp://hdl.handle.net/11603/24045
dc.language.isoen_USen_US
dc.publisherSpringeren_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Physics Department
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleStudy of Dissipative Losses in AC-Biased Mo/Au Bilayer Transition-Edge Sensorsen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-9247-3010en_US
dcterms.creatorhttps://orcid.org/0000-0003-4096-4675en_US
dcterms.creatorhttps://orcid.org/0000-0001-8397-9338en_US

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