Characterization of the Astro-E2 X-ray spectrometer

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

Research output: Contribution to journalArticle

Abstract

We present the results of extensive characterization tests of the X-ray Spectrometer (XRS), which will be launched in 2005 as part of the Astro-E2 mission. The XRS will utilize a newly developed 2-D microcalorimeter array of 32 pixels that will provide a resolution of ∼6eV over the energy range 0.3-10keV. The detector is characterized by the energy scale and energy resolution, both of which vary with design and operating parameters. We have calibrated the gain scale and energy resolution over a range of operating parameters including bias voltage, temperature, and incident photon flux. We will present the response of the cumulative detector array as well as a measure of the uniformity of the individual pixels. One pixel is physically offset from the array and will be continuously illuminated by a radioactive source in-flight. We will show the accuracy with which this pixel can be used to monitor variations in the focal plane array. Finally, we have illuminated the array with a high-energy continuum source and measured the Hg absorption edges in order to characterize the absorption efficiency of the pixels.

Original languageEnglish (US)
Pages (from-to)368-371
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

Fingerprint

X ray spectrometers
Pixels
pixels
spectrometers
x rays
Astro missions (STS)
energy
Detectors
Focal plane arrays
detectors
focal plane devices
Bias voltage
calorimeters
Photons
flight
Fluxes
continuums
photons
electric potential

Keywords

  • Microcalorimeters
  • X-ray detectors
  • X-ray spectrometers

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Characterization of the Astro-E2 X-ray spectrometer. / Cottam, J.; Boyce, K. R.; Brown, G. V.; Figueroa-Feliciano, E.; Kelley, R. L.; Ponce, V.; Porter, F. S.; Stahle, C. K.; Tillotson, Andy.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 520, No. 1-3, 11.03.2004, p. 368-371.

Research output: Contribution to journalArticle

Cottam, J, Boyce, KR, Brown, GV, Figueroa-Feliciano, E, Kelley, RL, Ponce, V, Porter, FS, Stahle, CK & Tillotson, A 2004, 'Characterization of the Astro-E2 X-ray spectrometer', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 520, no. 1-3, pp. 368-371. https://doi.org/10.1016/j.nima.2003.11.269
Cottam, J. ; Boyce, K. R. ; Brown, G. V. ; Figueroa-Feliciano, E. ; Kelley, R. L. ; Ponce, V. ; Porter, F. S. ; Stahle, C. K. ; Tillotson, Andy. / Characterization of the Astro-E2 X-ray spectrometer. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2004 ; Vol. 520, No. 1-3. pp. 368-371.
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