A Time-Domain SQUID multiplexer for readout of x-ray microcalorimeter arrays

Published

January 1, 2004

Author(s)

W.Bertrand (Randy) Doriese, Jonathan Beall, Joern Beyer, Steven Deiker, S. L. Ferreira, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, Carl D. Reintsema, Joel Ullom, Leila R. Vale

Abstract

SQUID multiplexers are being developed at NIST for the readout of large arrays of transition-edge-sensor (TES) detectors. Applications for these arrays include x-ray materials analysis on a scanning-electron microscope and astronomical cameras for x-ray missions such as Constellation X and submillimeter telescopes like SCUBA-2 and ACT. This poster describes in detail the warm electronics necessary to drive the three-stage SQUID amplifier. A 3U crate contains the critical timing and digital feedback electronics, including a clock card, which generates and passes the 50-MHz crate master clock; several digital feedback cards, each of which flux-locks and read out a column of detectors; and several address cards, each of which biases eight rows of 1st-stage SQUIDS. In addition, a tower mounted on the cryostat contains pre-amp cards that current-bias and read out eight SQUID series arrays, and bias cards, which current- and flux-bias the SQUID stages. All connections to the computer that controls the system are optical.

Citation

Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment

Pub Type

Journals

Keywords

bolometer, microcalorimeter, multiplexer, transition-edge sensor, SQUID

Citation

Doriese, W. , Beall, J. , Beyer, J. , Deiker, S. , Ferreira, S. , Hilton, G. , Irwin, K. , Martinis, J. , Nam, S. , Reintsema, C. , Ullom, J. and Vale, L. (2004), A Time-Domain SQUID multiplexer for readout of x-ray microcalorimeter arrays, Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment (Accessed April 19, 2024)