交流偏置TES微热量计对磁场和偏置电压的依赖性研究。

Study of the Dependency on Magnetic Field and Bias Voltage of an AC-Biased TES Microcalorimeter.

作者信息

Gottardi L, Adams J, Bailey C, Bandler S, Bruijn M, Chervenak J, Eckart M, Finkbeiner F, den Hartog R, Hoevers H, Kelley R, Kilbourne C, de Korte P, van der Kuur J, Lindeman M, Porter F, Sadlier J, Smith S

机构信息

SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands.

NASA GSFC, Greenbelt Road, Greenbelt, MD 20771 USA.

出版信息

J Low Temp Phys. 2012;167(3-4):214-219. doi: 10.1007/s10909-012-0494-x. Epub 2012 Jan 21.

DOI:10.1007/s10909-012-0494-x

PMID:26069348

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4459122/

Abstract

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 Δ =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.

摘要

在SRON，我们正在研究一台以交流偏置配置运行的戈达德太空飞行中心单像素TES微热量计的性能。对于6keV的X射线光子，该像素的X射线能量分辨率Δ = 3.7eV，这比在相同直流偏置像素中观察到的能量分辨率差约2倍。为了更好地理解这种差异的原因，我们将探测器表征为温度、偏置工作点和施加的垂直磁场的函数。测量了探测器噪声对TES交流偏置电压的强烈周期性依赖性。我们在最近观察到的TES微热量计的弱链接行为框架内讨论了结果。