Conceptual design of the modular detector and readout system for the CMB-S4 survey experiment
Conceptual design of the modular detector and readout system for the CMB-S4 survey experiment
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CMB-S4巡天实验模块化探测器和读出系统的概念设计
DOI：
10.1117/12.2630494
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Besuner, Robert
中科院分区：
文献类型：
--
作者：
Barron, Darcy;Ahmed, Zeeshan;Aguilar, Jessica;Anderson, Adam;Baker, Carina;Barry, Peter;Beall, James;Bender, Amy;Benson, Bradford;Besuner, Robert
提出了宇宙微波背景阶段4 （CMB-S4）地基观测实验的模块化探测器和读出系统的概念设计。CMB- s4将以前所未有的灵敏度绘制宇宙微波背景（CMB）和毫米波天空，使用50万个超导探测器从智利和南极洲观测，绘制超过60%的天空。探测器和读出系统的基本组成部分是一个工作在100 mK的探测器模块包，它连接到读出和放大链，将信号传输到室温。它使用馈角耦合正交换能器（OMT）阵列，将来自天空的光能量收集到直流电压偏置过渡边缘传感器（TES）测热计上。TESs中产生的电流信号随后由两级低温超导量子干涉装置（SQUID）系统放大，该系统具有时分多路复用器以减少导线数量，并匹配室温电子设备以调节并将信号传输到数据采集系统。为实现CMB-S4的科学目标，正在开发探测器和读出系统在大范围观测波段（20至300 GHz）和光功率上的灵敏度和系统学要求。虽然该设计结合了前几代CMB仪器的成功，但CMB- s4需要比以往任何实验都多一个数量级的探测器。这需要在超过10平方米的硅上制造复杂的超导电路，以及大量的精密布线、组装和低温测试。
We present the conceptual design of the modular detector and readout system for the Cosmic Microwave Background Stage 4 (CMB-S4) ground-based survey experiment. CMB-S4 will map the cosmic microwave background (CMB) and the millimeter-wave sky to unprecedented sensitivity, using 500,000 superconducting detectors observing from Chile and Antarctica to map over 60 percent of the sky. The fundamental building block of the detector and readout system is a detector module package operated at 100 mK, which is connected to a readout and amplification chain that carries signals out to room temperature. It uses arrays of feedhorn-coupled orthomode transducers (OMT) that collect optical power from the sky onto dc-voltage-biased transition-edge sensor (TES) bolometers. The resulting current signal in the TESs is then amplified by a two-stage cryogenic Superconducting Quantum Interference Device (SQUID) system with a time-division multiplexer to reduce wire count, and matching room-temperature electronics to condition and transmit signals to the data acquisition system. Sensitivity and systematics requirements are being developed for the detector and readout system over a wide range of observing bands (20 to 300 GHz) and optical powers to accomplish CMB-S4's science goals. While the design incorporates the successes of previous generations of CMB instruments, CMB-S4 requires an order of magnitude more detectors than any prior experiment. This requires fabrication of complex superconducting circuits on over 10 square meters of silicon, as well as significant amounts of precision wiring, assembly and cryogenic testing.
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影响因子：
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DOI：
10.1109/nssmic.2015.7581890
发表时间：
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期刊：
2015 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
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