arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1907.09035astro-ph.IM
收藏

低寄生频域复用读出的性能

Performance of a low-parasitic frequency-domain multiplexing readout

A. E. Lowitz, A. N. Bender, P. Barry, T. W. Cecil, C. L. Chang, R. Divan, M. A. Dobbs, A. J. Gilbert, S. E. Kuhlmann, M. Lisovenko, J. Montgomery, V. Novosad, S… 展开作者

A. E. Lowitz, A. N. Bender, P. Barry, T. W. Cecil, C. L. Chang, R. Divan, M. A. Dobbs, A. J. Gilbert, S. E. Kuhlmann, M. Lisovenko, J. Montgomery, V. Novosad, S. Padin, J. E. Pearson, G. Wang, V. Yefremenko, J. Zhang

摘要:

频域多路复用是一种用于现代CMB实验的过渡边缘传感器测辐射热计阵列的读出技术,包括SPT-3G接收器。在这里,我们提出了低寄生频域复用读出的设计细节和性能测量。降低低温部件之间的连接的寄生阻抗提供了改善读出的串扰和噪声性能的途径。降低的串扰将进而允许更高的复用因子。与SPT-3G硬件相比,我们已经证明寄生电阻提高了两倍。降低寄生效应还允许低电阻测辐射热计的操作,这使得能够更好地优化R $_{\rm{bolo}}$,以改善读出噪声性能。原型系统具有噪声性能媲美SPT-3G读出硬件操作时,SPT-3G探测器。

英文摘要:

Frequency-domain multiplexing is a readout technique for transition edge sensor bolometer arrays used on modern CMB experiments, including the SPT-3G receiver. Here, we present design details and performance measurements for a low-parasitic frequency-domain multiplexing readout. Reducing the parasitic impedance of the connections between cryogenic components provides a path to improving both the crosstalk and noise performance of the readout. Reduced crosstalk will in turn allow higher multiplexing factors. We have demonstrated a factor of two improvement in parasitic resistance compared to SPT-3G hardware. Reduced parasitics also permits operation of lower-resistance bolometers, which enables better optimization of R$_{\rm{bolo}}$ for improved readout noise performance. The prototype system exhibits noise performance comparable to SPT-3G readout hardware when operating SPT-3G detectors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑