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Title: SLAC Microresonator Radio Frequency (SMuRF) Electronics for Read Out of Frequency-Division-Multiplexed Cryogenic Sensors

Journal Article · · Journal of Low Temperature Physics
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  1. Stanford Univ., CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
  5. Santa Clara Univ., Santa Clara, CA (United States)

Large arrays of cryogenic sensors for various imaging applications ranging across x-ray, gamma-ray, cosmic microwave background, mm/sub-mm, as well as particle detection increasingly rely on superconducting microresonators for high multiplexing factors. These microresonators take the form of microwave SQUIDs that couple to transition-edge sensors or microwave kinetic inductance detectors. In principle, such arrays can be read out with vastly scalable software-defined radio using suitable FPGAs, ADCs and DACs. In this work, we share plans and show initial results for SLAC Microresonator Radio Frequency (SMuRF) electronics, a next-generation control and readout system for superconducting microresonators. SMuRF electronics are unique in their implementation of specialized algorithms for closed-loop tone tracking, which consists of fast feedback and feedforward to each resonator’s excitation parameters based on transmission measurements. Closed-loop tone tracking enables improved system linearity, a significant increase in sensor count per readout line, and the possibility of overcoupled resonator designs for enhanced dynamic range. Low-bandwidth prototype electronics were used to demonstrate closed-loop tone tracking on twelve 300-kHz-wide microwave SQUID resonators, spaced at ~ 6 MHz with center frequencies ~ 5–6 GHz. We achieve multi-kHz tracking bandwidth and demonstrate that the noise floor of the electronics is subdominant to the noise intrinsic in the multiplexer.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1490479
Journal Information:
Journal of Low Temperature Physics, Vol. 193, Issue 3-4; ISSN 0022-2291
Publisher:
Plenum PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (12)

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Cited By (6)

The Design of The CCAT-prime Epoch of Reionization Spectrometer Instrument text January 2019
Prime-Cam: a first-light instrument for the CCAT-prime telescope
  • Vavagiakis, Eve; Ahmed, Zeeshan; Ali, Aamir
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2313868
conference July 2018
TES X-ray Spectrometer at SLAC LCLS-II journal September 2018
Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) electronics for future CMB and sub-millimeter surveys
  • Henderson, Shawn W.; Ahmed, Zeeshan; Brown, David
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2314435
conference July 2018
Simons Observatory large aperture telescope receiver design overview
  • Zhu, Ningfeng; Orlowski-Scherer, John L.; Xu, Zhilei
  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX https://doi.org/10.1117/12.2312871
conference July 2018
The Design of the CCAT-prime Epoch of Reionization Spectrometer Instrument journal January 2020

Figures / Tables (5)


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