Low-noise microwave SQUID multiplexed readout of 38 x-ray transition-edge sensor microcalorimeters
Low-noise microwave SQUID multiplexed readout of 38 x-ray transition-edge sensor microcalorimeters
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DOI：
10.1063/5.0016333
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发表时间：
2020-09
影响因子：
4
通讯作者：
Y. Nakashima;F. Hirayama;S. Kohjiro;H. Yamamori;Shuichi Nagasawa;A. Sato;S. Yamada;R. Hayakawa;N. Yamasaki;K. Mitsuda;K. Nagayoshi;H. Akamatsu;L. Gottardi;E. Taralli;M. Bruijn;M. Ridder;J. Gao;J. D. Herder
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文献类型：
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作者：
Y. Nakashima;F. Hirayama;S. Kohjiro;H. Yamamori;Shuichi Nagasawa;A. Sato;S. Yamada;R. Hayakawa;N. Yamasaki;K. Mitsuda;K. Nagayoshi;H. Akamatsu;L. Gottardi;E. Taralli;M. Bruijn;M. Ridder;J. Gao;J. D. Herder
我们报道了在微波超导量子干涉器件多路复用器(MW-Mux)中的超低噪声、快速响应、中等规模的多路复用器作为过渡边缘传感器(TES)的读出。我们的MW-Mux能够以500kHz采样读取40个通道，并且具有0.9kHz0/μΦ(其中Φ0是磁通量)的低读出噪声，相当于9pA/hz。相比之下，到目前为止，文献中已经报道了具有500 kHz采样和∼2μΦ0/Hz读出噪声的小于10像素的多路复用器。由于采样频率为500kHz，我们的微波多路复用器对上升时间约为12μ的TES脉冲具有快速的响应，S。我们演示了从X射线TES微量热计阵列中同时读出38个像素。在半最大光谱分辨率下测得的全宽值范围为2.79-4.56 eV，在5.9keV时的中位值为3.30 eV，其中包括读出噪声的∼10%的贡献，即0.9-1.7 eV。
We report very-low-noise, fast-response, middle-scale multiplexing in a microwave superconducting quantum interference device multiplexer (MW-Mux) as a transition-edge sensor (TES) readout. Our MW-Mux is able to read 40 channels with 500 kHz sampling and has a low readout noise of 0.9 μ Φ 0 / Hz (where Φ 0 is the magnetic flux quantum), equivalent to 9 pA / Hz. By contrast, a multiplexer of less than 10 pixels with 500 kHz sampling and ∼ 2 μ Φ 0 / Hz readout noise has so far been reported in the literature. Owing to the 500 kHz sampling, our MW-Mux exhibits a fast response to detect a TES pulse with a rise time around 12 μ s. We demonstrated simultaneous readout of 38 pixels from an array of x-ray TES microcalorimeters. The measured full-width values at half-maximum spectral resolution ranged from 2.79 to 4.56 eV, with a median value of 3.30 eV at 5.9 keV, including a ∼ 10 % contribution of readout noise, i.e., 0.9–1.7 eV.