Proposal for a definitive search for GUT-scale QCD axions
Not Available
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Engineering topics
Kuenstner, S.
Publications and source records attributed to Kuenstner, S..
Projected sensitivity of DMRadio-m 3 : A search for the QCD axion below 1 μ eV
Not Available
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Error-Correcting Codes for Code-Division Multiplexed TES Detectors
Transition edge sensors (TESs) have proven to be highly sensitive and versatile X-ray spectrometers. Upcoming missions, including Athena X-IFU, will rely on highly multiplexed focal planes where more than 32 TES pixels are read out using a single SQUID amplifier channel. We have implemented an error correction algorithm for code-division multiplexed TES signals that can compensate for potential failures of individual SQUID readout channels and that is both scalable and easily implemented in hardware. We present this algorithm for error correction and show results of laboratory tests to assess algorithm performance at recovering TES channels after a SQUID failure.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
A Spread-Spectrum SQUID Multiplexer
The transition-edge sensor (TES) is a mature, high-resolution x-ray spectrometer technology that provides a much higher efficiency than dispersive spectrometers such as gratings and crystal spectrometers. As larger arrays are developed, time-division multiplexing schemes operating at MHz frequencies are being replaced by microwave SQUID multiplexers using frequency-division multiplexing at GHz frequencies. However, the multiplexing factor achievable with microwave SQUIDs is limited by the high slew rate on the leading edge of x-ray pulses. In this paper, we propose a new multiplexing scheme for high-slew-rate TES x-ray calorimeters: the spread-spectrum SQUID multiplexer, which has the potential to enable higher multiplexing factors, especially in applications with lower photon-arrival rates.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗