A Spread-Spectrum SQUID Multiplexer
- Stanford University, Department of Physics (United States)
- SLAC National Accelerator Laboratory (United States)
The transition-edge sensor (TES) is a mature, high-resolution x-ray spectrometer technology that provides a much higher efficiency than dispersive spectrometers such as gratings and crystal spectrometers. As larger arrays are developed, time-division multiplexing schemes operating at MHz frequencies are being replaced by microwave SQUID multiplexers using frequency-division multiplexing at GHz frequencies. However, the multiplexing factor achievable with microwave SQUIDs is limited by the high slew rate on the leading edge of x-ray pulses. In this paper, we propose a new multiplexing scheme for high-slew-rate TES x-ray calorimeters: the spread-spectrum SQUID multiplexer, which has the potential to enable higher multiplexing factors, especially in applications with lower photon-arrival rates.
- OSTI ID:
- 22809861
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 193; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
Microwave SQUID multiplexing for the Lynx x-ray microcalorimeter
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journal | March 2019 |
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