Energy scales in X-ray microcalorimeters

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

Research output: Contribution to journalArticle

Abstract

Microcalorimeter pulse shape characteristics, such as pulse height, decay constant, and rise time, are dependent on the detector temperature and bias as well as incident photon energy. We examine the nature of the temperature dependency by illuminating the Astro-E2 X-ray Spectrometer microcalorimeter array with X-rays generated by electron impact on a selection of foil targets. The resulting pulses are collected over a range of detector temperatures. We observe and model these pulses by fitting the data with non-linear pulse models. Our aim is to determine a robust method for correcting the energy scale obtained in ground calibration for slight differences in the operating conditions while in orbit.

Original languageEnglish (US)
Pages (from-to)595-598
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume520
Issue number1-3
DOIs
StatePublished - Mar 11 2004

Keywords

  • Microcalorimeter array
  • Thermal detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Tillotson, W. A., Boyce, K. R., Brown, G. V., Cottam, J., Figueroa-Feliciano, E., Kelley, R. L., Porter, F. S., & Stahle, C. K. (2004). Energy scales in X-ray microcalorimeters. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 520(1-3), 595-598. https://doi.org/10.1016/j.nima.2003.11.324