World’s Cheapest Readout Electronics for Kinetic Inductance Detector by Using RedPitaya
World’s Cheapest Readout Electronics for Kinetic Inductance Detector by Using RedPitaya
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使用 RedPitaya 打造世界上最便宜的动感电感探测器读出电子设备
DOI：
10.1007/s10909-016-1485-0
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
O. Tajima
中科院分区：
文献类型：
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作者：
N. Tomita;H. Jeong;J. Choi;H. Ishitsuka;S. Mima;T. Nagasaki;S. Oguri;O. Tajima
动态电感探测器（KID）是一种前沿的超导探测器。KID开发者的数量正在增长。他们中的大多数人已经从以前的研究转向超导技术。因此，已经建立了制造KIDs的基础设施和用于测试的冷却系统。然而，读出电子器件必须重新准备。商业系统和低成本的标准电子设备都是不可用的，尽管各种尝试创造一个标准。我们建议在KID开发的初始阶段使用RedPitaya作为读出电子器件，其成本低（400美元）且易于设置。RedPitaya由一个全可编程FPGA-CPU模块和一个双通道14位DAC （ADC）组成，用于生成（测量）125 MSpS的快速模拟信号。每个端口都可以进行同相或正交同步，并编写了模拟信号的生成和采样功能。通过使用这些默认函数的组合，可以直接构建类似向量网络分析器的逻辑。其频率范围的上变频和下变频也可以通过使用商业设备，即混频器，耦合器和本地振荡器。我们在红火龙果上实现了直接下变频逻辑，并成功演示了KID信号测量。
The kinetic inductance detector (KID) is a cutting-edge superconducting detector. The number of KID developers is growing. Most of them have switched from their previous study to superconducting technologies. Therefore, infrastructures for the fabrication of KIDs and cooling systems for their tests have already been established. However, readout electronics have to be newly prepared. Neither a commercial system nor low-cost standard electronics are available despite various attempts to create a standard one. We suggest the use of RedPitaya as readout electronics for the initial step of KID development, which is low cost (400 USD) and easy to set up. The RedPitaya consists of an all-programmable FPGA-CPU module and a dual-channel 14 bit DAC (ADC) to generate (measure) fast analog signals with 125 MSpS. Each port can be synchronized in-phase or quadrature-phase, and functions for generating and sampling analog signal are prepared. It is straightforward to construct vector network analyzer-like logic by using a combination of these default functions. Up-conversion and down-conversion of its frequency range are also possible by using commercial equipment, i.e., mixers, couplers, and a local oscillator. We implemented direct down-conversion logic on the RedPitaya, and successfully demonstrated KID signal measurements.