We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
SLAC Microresonator Radio Frequency (SMuRF) Electronics for Read Out of Frequency-Division-Multiplexed Cryogenic Sensors.
- Authors
Kernasovskiy, S. A.; Kuenstner, S. E.; Karpel, E.; Ahmed, Z.; Van Winkle, D. D.; Smith, S.; Dusatko, J.; Frisch, J. C.; Chaudhuri, S.; Cho, H. M.; Dober, B. J.; Henderson, S. W.; Hilton, G. C.; Hubmayr, J.; Irwin, K. D.; Kuo, C. L.; Li, D.; Mates, J. A. B.; Nasr, M.; Tantawi, S.
- Abstract
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.
- Subjects
COSMIC background radiation; DYNAMICS; MICRORESONATORS (Optoelectronics); LASER cavity resonators; ASTROPHYSICAL radiation
- Publication
Journal of Low Temperature Physics, 2018, Vol 193, Issue 3/4, p570
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-018-1981-5