Code-division multiplexing for x-ray microcalorimeters

G. M. Stiehl; W. B. Doriese; J. W. Fowler; G. C. Hilton; K. D. Irwin; C. D. Reintsema; D. R. Schmidt; D. S. Swetz; J. N. Ullom; L. R. Vale.

doi:10.1063/1.3684807

Code-division multiplexing for x-ray microcalorimeters

Instrumentation and Detectors 2012-02-15 v1 Instrumentation and Methods for Astrophysics

Authors: G. M. Stiehl , W. B. Doriese , J. W. Fowler , G. C. Hilton , K. D. Irwin , C. D. Reintsema , D. R. Schmidt , D. S. Swetz , J. N. Ullom , L. R. Vale.

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Abstract

We demonstrate the code-division multiplexed (CDM) readout of eight transition-edge sensor microcalorimeters. The energy resolution is 3.0 eV (full width at half-maximum) or better at 5.9 keV, with a best resolution of 2.3 eV and a mean of 2.6 eV over the seven modulated detectors. The flux-summing CDM system is described and compared with similar time-division multiplexed (TDM) readout. We show that the sqrt(Npixels) multiplexing disadvantage associated with TDM is not present in CDM. This demonstration establishes CDM as both a simple route to higher performance in existing TDM microcalorimetric experiments and a long-term approach to reaching higher multiplexing factors.

Keywords

particle detector detector readout electronics

Cite

@article{arxiv.1201.6289,
  title  = {Code-division multiplexing for x-ray microcalorimeters},
  author = {G. M. Stiehl and W. B. Doriese and J. W. Fowler and G. C. Hilton and K. D. Irwin and C. D. Reintsema and D. R. Schmidt and D. S. Swetz and J. N. Ullom and L. R. Vale.},
  journal= {arXiv preprint arXiv:1201.6289},
  year   = {2012}
}

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To be published in Applied Physics Letters

Code-division multiplexing for x-ray microcalorimeters

Abstract

Keywords

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