Optimization and analysis of code-division multiplexed TES microcalorimeters

Details Optimization and analysis of code-division multiplexed TES microcalorimeters Optimization and analysis of code-division multiplexed TES microcalorimeters

2011-10-11

arxiv.org/abs/1110.2531v1

Physics

Instrumentation and Detectors

7 pages, 5 figures. Presented at the 14th International Workshop on Low Temperature Detectors, Heidelberg University, August 1

Scientific paper

We are developing code-division multiplexing (CDM) systems for transition-edge sensor arrays with the goal of reaching multiplexing factors in the hundreds. We report on x-ray measurements made with a four-channel prototype CDM system that employs a flux-summing architecture, emphasizing data-analysis issues. We describe an empirical method to determine the demodulation matrix that minimizes cross-talk. This CDM system achieves energy resolutions of between 2.3 eV and 3.0 eV FWHM at 5.9 keV.

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