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本文报道了用于转变边缘传感器(Transition Edge Sensor)读出的两级超导量子干涉器件(Superconducting Quantum Interference Device)放大器电路设计,通过电流分辨率、增益、带宽等考虑对电路参数进行设计,并采用WRspice建立电路仿真模型进行参数优化.电路通过引入磁通锁定环(flux locked loop)实现了大动态输入的确定放大倍数线性放大器,并采用时分复用读出策略对TES阵列进行读出.本文分析方法及仿真模型对于设计及验证大规模复杂TES阵列读出电路提供了一种有效的参数优化手段.
This paper reports the design of a two-stage Superconducting Quantum Interference Device (AMP) amplifier for readout of Transition Edge Sensor. The design of the circuit parameters is based on current resolution, gain and bandwidth considerations. WRSPice is used to establish the circuit simulation model to optimize the parameters.The circuit realizes the determination of linear amplification amplifier with large dynamic input by introducing a flux locked loop and reads the TES array using the time division multiplexing readout strategy. Analytical methods and simulation models provide an effective parameter optimization method for designing and verifying large-scale complex TES array readout circuits.