Cosmic ray effects in microcalorimeter arrays

C. K. Stahle, K. R. Boyce, G. V. Brown, J. Cottam, E. Figueroa-Feliciano, M. Galeazzi, R. L. Kelley, D. McCammon, F. S. Porter, A. E. Szymkowiak, W. A. Tillotson

Research output: Contribution to journalArticlepeer-review


We have identified signals resulting from cosmic rays and environmental gamma rays depositing energy in the pixels and in the silicon frame of the Astro-E2/X-Ray Spectrometer microcalorimeter array. Coincidences between pixels and between the array and an anti-coincidence detector determined the nature of the events. Pulse shapes and amplitudes from the cosmic ray events helped refine the thermal model of the array chip. We discuss how future arrays can be optimized either for the greatest background rejection or for the highest source count rates.

Original languageEnglish (US)
Pages (from-to)472-474
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
StatePublished - Mar 11 2004


  • Cosmic rays
  • Microcalorimeter array
  • Thermal detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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