Heat sinking and crosstalk for large, close-packed arrays of microcalorimeters

Naoko Iyomoto*, S. R. Bandler, R. P. Brekosky, A. D. Brown, J. A. Chervenak, E. Figueroa-Feliciano, F. M. Finkbeiner, R. L. Kelley, C. A. Kilbourne, F. S. Porter, J. E. Sadleir, S. J. Smith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We have studied crosstalk on our 8 × 8 transition-edge sensor (TES) x-ray microcalorimeter arrays. The shapes of thermal crosstalk pulses are well reproduced as a convolution of heat input from the source pixel and decay in the receiver pixel. We have measured the amount of thermal crosstalk as a function of distance between the source and receiver pixels. Using the results, we have estimated the degradation of energy resolution due to the thermal crosstalk as a function of count rate to determine the level of thermal crosstalk that is needed to satisfy the requirements of NASA's Constellation-X mission.

Original languageEnglish (US)
Pages (from-to)506-512
Number of pages7
JournalJournal of Low Temperature Physics
Volume151
Issue number1-2 PART 1
DOIs
StatePublished - Apr 1 2008

Keywords

  • Microcalorimeters
  • Transition edge sensors
  • X-ray spectroscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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