Title of article
Characterization and reduction of noise in Mo/Au transition edge sensors
Author/Authors
Lindeman، نويسنده , , Mark A. and Bandler، نويسنده , , Simon and Brekosky، نويسنده , , Regis P. and Chervenak، نويسنده , , James A. and Figueroa-Feliciano، نويسنده , , Enectali and Finkbeiner، نويسنده , , Fred M. and Saab، نويسنده , , Tarek and Stahle، نويسنده , , Caroline K.، نويسنده ,
Pages
3
From page
348
To page
350
Abstract
We measured noise in a variety of Mo/Au transition-edge sensor (TES) X-ray calorimeters. We investigated the relationship between the noise, bias, and the superconducting phase transition in the TESs. Our square TES calorimeters have achieved very good energy resolutions (2.4 eV at 1.5 keV) but their resolutions have been limited by broadband white excess noise generated by the TES when it is biased in the phase transition. We have recently fabricated Mo/Cu TESs with interdigitated normal metal bars deposited on top of the bilayer. The new TES calorimeters have demonstrated little or no excess noise in the phase transition. These results point the way to development of TES calorimeters with higher energy resolution.
Keywords
Transition edge sensor , Reduced excess noise , Gold , Calorimeter , Bilayer , Molydenum
Journal title
Astroparticle Physics
Record number
2022912
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