Share Email Print
cover

Proceedings Paper • new

Characterization of fine-pitch cadmium telluride detectors for the FOXSI sounding rocket experiment (Conference Presentation)

Paper Abstract

We present on the detector characterization activities and flight results for fine-pitch (60um) cadmium telluride (CdTe) strip detectors designed for the Focusing Optics X-ray Solar Imager (FOXSI) sounding rocket experiment. FOXSI, optimized for observations in the range 4-20 keV, is the first solar-dedicated instrument to utilize the technology of focusing optics for observing the Sun in hard X-rays. Each of the seven FOXSI optics modules is paired with a semiconductor strip detector from which the energy and position of each incoming photon can be derived. While the first FOXSI experiment (FOXSI-1) flew only silicon (Si) detectors, both of the next two FOXSI sounding rocket experiments (FOXSI-2 and FOXSI-3) upgraded some of the detectors to CdTe (60um pitch) for enhanced efficiency at energies >10 keV. Here we present the measurements and analysis performed to characterize components of the CdTe detector response for FOXSI-2 and FOXSI-3, including the gain, energy resolution, and efficiency. Additionally, we explore the effects of charge sharing for these fine-pitch detectors and describe how these effects are accounted for in our calibration and data analysis. Results from spectral analysis of a solar microflare using CdTe data from the FOXSI-2 flight will be shown.

Paper Details

Date Published: 9 September 2019
PDF
Proc. SPIE 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI, 1111813 (9 September 2019); doi: 10.1117/12.2530107
Show Author Affiliations
Juliana Vievering, Univ. of Minnesota, Twin Cities (United States)
Lindsay Glesener, Univ. of Minnesota, Twin Cities (United States)
P. Subramania Athiray, Univ. of Minnesota, Twin Cities (United States)
Sophie Musset, Univ. of Minnesota, Twin Cities (United States)
Shin-nosuke Ishikawa, Nagoya Univ. (Japan)
Juan Camilo Buitrago-Casas, Space Sciences Lab. (United States)
Tadayuki Takahashi, Kavli Institute for the Physics and Mathematics of the Universe (Japan)
Shin Watanabe, Institute of Space and Astronautical Science (Japan)
Kento Furukawa, Kavli Institute for the Physics and Mathematics of the Universe (Japan)
Kouichi Hagino, Tokyo Univ. of Science (Japan)
Daniel F. Ryan, NASA Goddard Space Flight Ctr. (United States)
Andrew Inglis, NASA Goddard Space Flight Ctr. (United States)
Säm Krucker, Space Sciences Lab. (United States)
Steven Christe, NASA Goddard Space Flight Ctr. (United States)
Sasha Courtade, Space Sciences Lab. (United States)


Published in SPIE Proceedings Vol. 11118:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI
Oswald H. Siegmund, Editor(s)

© SPIE. Terms of Use
Back to Top