摘要
We develop an x-ray Ti/Au transition-edge sensor(TES)with an Au absorber deposited on the center of TES and improved its energy resolution using the K-means clustering algorithm in combination with Wiener filter.We firstly extract the main parameters of each recorded pulse trace,which are adopted to classify these traces into several clusters in the K-means clustering algorithm.Then real traces are selected for energy resolution analysis.Following the baseline correction,the Wiener filter is used to improve the signal-to-noise ratio.Although the silicon underneath the TES has not been etched to reduce the thermal conductance,the energy resolution of the developed x-ray TES is improved from 94 eV to 44 eV at 5.9 keV.
作者
马卿效
张文
李佩展
王争
冯志发
杨心开
钟家强
缪巍
任远
李婧
史生才
Qingxiao Ma;Wen Zhang;Peizhan Li;Zheng Wang;Zhifa Feng;Xinkai Yang;Jiaqiang Zhong;Wei Miao;Yuan Ren;Jing Li;Shengcai Shi(Purple Mountain Observatory,Chinese Academic of Sciences,Nanjing 210023,China;College of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.12293032,120101002,12173097,and U1931123)
the National Key Basic Research and Development Program of China(Grant Nos.2020YFC2201703 and 2018YFA0404701)
Chinese Academy of Sciences(Grant No.GJJSTD20210002)。
