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首页> 外文期刊>IEEE Transactions on Applied Superconductivity >A frequency-domain read-out technique for large microcalorimeter arrays demonstrated using high-resolution /spl gamma/-ray sensors
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A frequency-domain read-out technique for large microcalorimeter arrays demonstrated using high-resolution /spl gamma/-ray sensors

机译：使用高分辨率/ spl伽玛射线/射线传感器演示的用于大型微热量计阵列的频域读出技术

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摘要

Cryogenic sensors composed of transition-biased superconducting films have demonstrated remarkable sensitivity at /spl gamma/-ray, x-ray, optical, and far-infrared to millimeter wavelengths. However, for these sensors to find widespread application in astronomy and materials analysis, technologies for building and reading out large arrays are required. We are currently developing a frequency-domain multiplexing scheme for the read-out of large numbers of microcalorimeters using a much smaller number of amplifiers. In this scheme, each sensor is biased at an identifying frequency and operated in a series LC circuit to suppress out-of-band noise. Here, we present results demonstrating the undegraded operation of two /spl gamma/-ray sensors multiplexed using this technique. In addition, we provide a series of design rules which relate the minimum bias frequency and the values of the reactive elements in the system to a small number of sensor properties. Finally, we discuss the ultimate limits on the number of sensors that can be measured with a single amplifier.
机译：由过渡偏置超导薄膜组成的低温传感器在/ spl伽玛射线/ x射线，x射线，光学和远红外至毫米波长下均表现出卓越的灵敏度。但是，为了使这些传感器在天文学和材料分析中得到广泛应用，需要用于构建和读取大型阵列的技术。我们目前正在开发一种频域复用方案，用于使用数量少得多的放大器读出大量的量热仪。在该方案中，每个传感器都以一个识别频率偏置，并在串联LC电路中运行以抑制带外噪声。在这里，我们提出的结果证明了使用此技术多路复用的两个/ spl伽玛/射线传感器的不降级性能。此外，我们提供了一系列设计规则，这些规则将最小偏置频率和系统中电抗元件的值与少量传感器属性相关联。最后，我们讨论了单个放大器可以测量的传感器数量的极限。

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