Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) electronics for future CMB and sub-millimeter surveys

Shawn W. Henderson; Zeeshan Ahmed; Jason Austermann; Daniel Becker; Douglas A. Bennett; David Brown; Saptarshi Chaudhuri; Hsiao-Mei Sherry Cho; John M. D'Ewart; Bradley Dober; Shannon M. Duff; John E. Dusatko; Sofia Fatigoni; Josef C. Frisch; Jonathon D. Gard; Mark Halpern; Gene C. Hilton; Johannes Hubmayr; Kent D. Irwin; Ethan D. Karpel; Sarah S. Kernasovskiy; Stephen E. Kuenstner; Chao-Lin Kuo; Dale Li; John A. B. Mates; Carl D. Reintsema; Stephen R. Smith; Joel Ullom; Leila R. Vale; Daniel D. Van Winkle; Michael Vissers; Cyndia Yu

doi:10.1117/12.2314435

18 July 2018 Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) electronics for future CMB and sub-millimeter surveys

Shawn W. Henderson, Zeeshan Ahmed, Jason Austermann, Daniel Becker, Douglas A. Bennett, David Brown, Saptarshi Chaudhuri, Hsiao-Mei Sherry Cho, John M. D'Ewart, Bradley Dober, Shannon M. Duff, John E. Dusatko, Sofia Fatigoni, Josef C. Frisch, Jonathon D. Gard, Mark Halpern, Gene C. Hilton, Johannes Hubmayr, Kent D. Irwin, Ethan D. Karpel, Sarah S. Kernasovskiy, Stephen E. Kuenstner, Chao-Lin Kuo, Dale Li, John A. B. Mates, Carl D. Reintsema, Stephen R. Smith, Joel Ullom, Leila R. Vale, Daniel D. Van Winkle, Michael Vissers, Cyndia Yu

Author Affiliations +

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 1070819 (2018) https://doi.org/10.1117/12.2314435
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The next generation of cryogenic CMB and submillimeter cameras under development require densely instrumented sensor arrays to meet their science goals. The readout of large numbers (~10,000-100,000 per camera) of sub-Kelvin sensors, for instance as proposed for the CMB-S4 experiment, will require substantial improvements in cold and warm readout techniques. To reduce the readout cost per sensor and integration complexity, efforts are presently focused on achieving higher multiplexing density while maintaining readout noise subdominant to intrinsic detector noise and presenting manageable thermal loads. Highly-multiplexed cold readout technologies in active development include Microwave Kinetic Inductance Sensors (MKIDs) and microwave rf-SQUIDs. Both exploit the high quality factors of superconducting microwave resonators to densely channelize sub-Kelvin sensors into the bandwidth of a microwave transmission line. In the case of microwave SQUID multiplexing, arrays of transition-edge sensors (TES) are multiplexed by coupling each TES to its own superconducting microwave resonator through an rf-SQUID. We present advancements in the development of a new warm readout system for microwave SQUID multiplexing, the SLAC Superconducting Microresonator RF electronics, or SMuRF, by adapting SLAC National Accelerator Laboratory's Advanced Telecommunications Computing Architecture (ATCA) FPGA Common Platform. SMuRF aims to read out 4000 microwave SQUID channels between 4 and 8 GHz per RF line. Each compact SMuRF system is built onto a single ATCA carrier blade. Daughter boards on the blade implement RF frequency-division multiplexing using FPGAs, fast DACs and ADCs, and an analog up- and down-conversion chain. The system reads out changes in flux in each resonator-coupled rf-SQUID by monitoring the change in the transmitted amplitude and frequency of RF tones produced at each resonator's fundamental frequency. The SMuRF system is unique in its ability to track each tone, minimizing the total RF power required to readout each resonator, thereby significantly reducing the linearity requirements on the cold and warm readout. Here, we present measurements of the readout noise and linearity of the first full SMuRF system, including a demonstration of closed-loop tone tracking on a 528 channel cryogenic microwave SQUID multiplexer. SMuRF is being explored as a potential readout solution for a number of future CMB projects including Simons Observatory, BICEP Array, CCAT-prime, Ali-CPT, and CMB-S4. In addition, parallel development of the platform is underway to adapt SMuRF to read out both MKID and fast X-ray TES calorimeter arrays.

Citation Download Citation

Shawn W. Henderson, Zeeshan Ahmed, Jason Austermann, Daniel Becker, Douglas A. Bennett, David Brown, Saptarshi Chaudhuri, Hsiao-Mei Sherry Cho, John M. D'Ewart, Bradley Dober, Shannon M. Duff, John E. Dusatko, Sofia Fatigoni, Josef C. Frisch, Jonathon D. Gard, Mark Halpern, Gene C. Hilton, Johannes Hubmayr, Kent D. Irwin, Ethan D. Karpel, Sarah S. Kernasovskiy, Stephen E. Kuenstner, Chao-Lin Kuo, Dale Li, John A. B. Mates, Carl D. Reintsema, Stephen R. Smith, Joel Ullom, Leila R. Vale, Daniel D. Van Winkle, Michael Vissers, and Cyndia Yu "Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) electronics for future CMB and sub-millimeter surveys", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 1070819 (18 July 2018); https://doi.org/10.1117/12.2314435

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available