High-resolution X-ray detectors based on superconducting tunnel junction with SQUID readout

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• 作者：Oku ; T. ; Ikeda ; T. ; Kato ; H. ; Kawai ; K. ; Miyasaka ; H. ; Ootani ; W. ; Otani ; C. ; Sato ; H. ; Shimizu ; H.M. ; et. al.
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2000
• 出版时间：April 7, 2000
• 年：2000
• 卷：444
• 期：1-2
• 页码：136-139
• 全文大小：118 K

文摘

We are developing high-resolution X-ray detectors based on superconducting tunnel junctions (STJs). A two-stage superconducting quantum-interference device (SQUID) amplifier with high gain, low noise and high sensitivity was employed as a readout electronic device. We have developed the STJ readout circuit which makes it possible to optimize the STJ bias condition without disturbing the operating point of the SQUID amplifier. High-resolution X-ray detectors using our system is discussed.