JOHN A.B. MATES, University of Colorado, Boulder, CO, USA: The Microwave SQUID Multiplexer combines dissipationless rf-SQUIDs and superconducting microwave resonators, encoding the signal from each input channels in its own microwave Ione, summing many tones onta a cammon output channel. lts principal advantage over existing multiplexing technologies is the large GHz) avallable output bandwidth. This bandwidth allows the multiplexed readout of large numbers of conventional detectors, but also of faster detectors than could be usefully multiplexed before. Far high-bandwidth applications such as the HOLMES neutrino mass experiment and x-ray beamline science we present a new microwave SQUID multiplexer design. This device targets an effective per-pixel sampling rate of 1 MHz and a multiplexing factor of 256 pixels per cryogenic amplifier, far exceeding existing technologies and enabling new measurements. We will discuss the performance of this device and our work with the room-temperature demultiplexing electronics to utilize its full per-pixel bandwidth capacity.

DATA: 23-06-2016