2012/01/20 by L. Gottardi, J. Adams, J. S. Adams +28
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting and THz Device Technology #Thermal Radiation and Cooling Technologies
paper · pdf · doi:10.1007/s10909-012-0494-x
openalex publication_date 2012/01/20 · crossref created 2012/01/20 · crossref issued 2012/01/21 · crossref published 2012/01/21 · crossref published-online 2012/01/21 · crossref published-print 2012/05/01 · crossref deposited 2017/06/20 · openalex created_date 2025/10/10 · crossref indexed 2026/07/29 · openalex updated_date 2026/07/30
At SRON we are studying the performance of a Goddard Space Flight Center single pixel TES microcalorimeter operated in an AC bias configuration. For x-ray photons at 6 keV the pixel shows an x-ray energy resolution ΔE FWHM =3.7 eV, which is about a factor 2 worse than the energy resolution observed in an identical DC-biased pixel. In order to better understand the reasons for this discrepancy we characterised the detector as a function of temperature, bias working point and applied perpendicular magnetic field. A strong periodic dependency of the detector noise on the TES AC bias voltage is measured. We discuss the results in the framework of the recently observed weak-link behaviour of a TES microcalorimeter.