Abstract
We are developing code-division multiplexing (CDM) systems for TES 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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Fowler, J.W., Doriese, W.B., Hilton, G. et al. Optimization and Analysis of Code-Division Multiplexed TES Microcalorimeters. J Low Temp Phys 167, 713–720 (2012). https://doi.org/10.1007/s10909-012-0463-4
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DOI: https://doi.org/10.1007/s10909-012-0463-4