Translator Disclaimer
16 July 2018 Digital frequency multiplexing with sub-Kelvin SQUIDs
Author Affiliations +
Digital frequency multiplexing (dfMux) is a readout architecture for transition edge sensor-based detector arrays and is used on telescopes including SPT-3G, POLARBEAR-2, and LiteBIRD. Here, we present recent progress and plans for development of a sub-Kelvin SQUID architecture for digital frequency multiplexed bolometers. This scheme moves the SQUID from the 4K stage to the 250mK stage, adjacent to the bolometers. Operating the SQUID on the detector stage may offer lower noise and greater scalability. Electrical performance will be improved as a result of decreased wiring length and reduced parasitics, allowing for higher multiplexing factors and lower bolometer Rnormal. These performance improvements will enable ultra-large focal planes for future instruments such as CMB-S4.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Amy E. Lowitz, Amy N. Bender, Matthew A. Dobbs, and Adam J. Gilbert "Digital frequency multiplexing with sub-Kelvin SQUIDs", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107081D (16 July 2018);


The 160 TES bolometer read-out using FDM for SAFARI
Proceedings of SPIE (July 23 2014)
The FDM readout system for the TES bolometers of the...
Proceedings of SPIE (July 19 2016)
The FDM readout for the LSPE/SWIPE TES bolometers
Proceedings of SPIE (July 13 2018)
Laser-galvanic control of gas pressure and purity
Proceedings of SPIE (May 07 1999)
The NIKA 2011 run results and perspectives towards a...
Proceedings of SPIE (September 27 2012)
Superconducting kinetic inductance photon detectors
Proceedings of SPIE (December 18 2002)

Back to Top