19 August 2014 Optimization of cold resonant filters for frequency domain multiplexed readout of POLARBEAR-2
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For the next generation of Cosmic Microwave Background (CMB) experiments, kilopixel arrays of Transition Edge Sensor (TES) bolometers are necessary to achieve the required sensitivity and their science goals. We are developing read-out electronics for POLARBEAR-2 CMB experiment, which multiplexes 32-TES bolometers through a single superconducting quantum interface device (SQUID). To increase both the bandwidth of the SQUID electronics and the multiplexing factor, we are modifying cold wiring and developing LC filters, and a low-inductance superconducting cable. Using these components, we will show frequency domain multiplexing up to 3 MHz.
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Kaori Hattori, Yoshiki Akiba, Kam Arnold, Darcy Barron, Amy Bender, Matthew Adam Dobbs, Tijmen de Haan, Nicholas Harrington, Masaya Hasegawa, Masashi Hazumi, William Laird Holzapfel, Yasuto Hori, Brian G. Keating, Adrian T. Lee, Joshua Montgomery, Hideki Morii, Michael J. Myers, Kaja Rotermund, Ian Shirley, Graeme M. Smecher, Nathan Stebor, Aritoki Suzuki, Takayuki Tomaru, "Optimization of cold resonant filters for frequency domain multiplexed readout of POLARBEAR-2", Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91531B (19 August 2014); doi: 10.1117/12.2057045; https://doi.org/10.1117/12.2057045

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