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arXiv 0911.4448astro-ph.IMastro-ph.CO
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基于数字频率复用读出系统的千像素过渡边缘传感器测辐射热计阵列的调谐

Tuning of Kilopixel Transition Edge Sensor Bolometer Arrays with a Digital Frequency Multiplexed Readout System

K. MacDermid, P. Hyland, F. Aubin, E. Bissonnette, M. Dobbs, J. Hubmayr, G. Smecher, S. Warraich

摘要:

研制了一种数字频率多路复用(DfMUX)系统,用于调谐毫米波宇宙学望远镜用SQUID阵列读出的大型跃迁边缘传感器(TES)测辐射热计阵列。DfMUX系统将多个测辐射热计的输入偏置电压和输出电流多路复用到一组低温导线上。多路复用减少了相机的亚开尔文低温探测器阶段的热负荷。在本文中,我们描述的算法和软件用于设置和优化的操作测辐射热相机。这些算法在嵌入在每个后端读出板上操作的FPGA器件内的软处理器上实现。其结果是一个完全并行化的实现,其设置时间与数组大小无关。

英文摘要:

A digital frequency multiplexing (DfMUX) system has been developed and used to tune large arrays of transition edge sensor (TES) bolometers read out with SQUID arrays for mm-wavelength cosmology telescopes. The DfMUX system multiplexes the input bias voltages and output currents for several bolometers on a single set of cryogenic wires. Multiplexing reduces the heat load on the camera's sub-Kelvin cryogenic detector stage. In this paper we describe the algorithms and software used to set up and optimize the operation of the bolometric camera. The algorithms are implemented on soft processors embedded within FPGA devices operating on each backend readout board. The result is a fully parallelized implementation for which the setup time is independent of the array size.

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。

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