Performance of TES X-ray Microcalorimeters with a Novel Absorber Design

被引：0
|
作者：
S. R. Bandler
R. P. Brekosky
A.-D. Brown
J. A. Chervenak
E. Figueroa-Feliciano
F. M. Finkbeiner
N. Iyomoto
R. L. Kelley
C. A. Kilbourne
F. S. Porter
J. Sadleir
S. J. Smith
机构：
[1] NASA/Goddard Space Flight Center,Kavli Institute
[2] MIT,undefined
来源：
Journal of Low Temperature Physics | 2008年 / 151卷
关键词：
Microcalorimeters; Transition edge sensors; 07.85.Nc; 29.40.Vj;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Superconducting transition-edge sensor (TES) microcalorimeters have demonstrated the Constellation-X requirements for spectral resolution, speed, and pixel size in a close-packed geometry. We will present our recent breakthrough energy resolution with sensors that have all gold and bismuth-gold absorbers. This has been enabled by cantilevered absorbers that make contact to the TES only in regions that are not part of the active thermometer. With this approach, rapid thermalization of the x-ray energy is achieved and interaction between the absorber and TES sensor films is avoided. This design allows us to obtain uniform high performance and is compatible with large-format, high fill-factor arrays. We will discuss this design, the results we have achieved in 8×8 arrays of these pixels, and the dependence of the performance on the geometry of the absorber contact area and on stress within the sensor.
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页码：400 / 405
页数：5
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