Details

Autor(en) / Beteiligte

• Doriese, W. B.
• Morgan, K. M.
• Bennett, D. A.
• Denison, E. V.
• Fitzgerald, C. P.
• Fowler, J. W.
• Gard, J. D.
• Hays-Wehle, J. P.
• Hilton, G. C.
• Irwin, K. D.
• Joe, Y. I.
• Mates, J. A. B.
• O’Neil, G. C.
• Reintsema, C. D.
• Robbins, N. O.
• Schmidt, D. R.
• Swetz, D. S.
• Tatsuno, H.
• Vale, L. R.
• Ullom, J. N.

Titel

Developments in Time-Division Multiplexing of X-ray Transition-Edge Sensors

Ist Teil von

• Journal of low temperature physics, 2016-07, Vol.184 (1-2), p.389-395

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2016

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Time-division multiplexing (TDM) is a mature scheme for the readout of arrays of transition-edge sensors (TESs). TDM is based on superconducting-quantum-interference-device (SQUID) current amplifiers. Multiple spectrometers based on gamma-ray and X-ray microcalorimeters have been operated with TDM readout, each at the scale of 200 sensors per spectrometer, as have several astronomical cameras with thousands of sub-mm or microwave bolometers. Here we present the details of two different versions of our TDM system designed to read out X-ray TESs. The first has been field-deployed in two 160-sensor (8 columns × 20 rows) spectrometers and four 240-sensor (8 columns × 30 rows) spectrometers. It has a three-SQUID-stage architecture, switches rows every 320 ns, and has total readout noise of 0.41  μ Φ 0 / √ Hz. The second, which is presently under development, has a two-SQUID-stage architecture, switches rows every 160 ns, and has total readout noise of 0.19  μ Φ 0 / √ Hz. Both quoted noise values are non-multiplexed and referred to the first-stage SQUID. In a demonstration of this new architecture, a multiplexed 1-column × 32-row array of NIST TESs achieved average energy resolution of 2.55 ± 0.01  eV at 6 keV.