Compact array of CdTe spectrometers for a prototype balloon flight

Ezio Caroli; Ariano Donati; Gianni Landini; Filomena Schiavone; John Buchan Stephen; Giulio Ventura; Stefano Del Sordo; Salvatore Giarrusso; M. Strazzeri; Gianfranco Taiocchi

doi:10.1117/12.461339

11 March 2003 Compact array of CdTe spectrometers for a prototype balloon flight

Ezio Caroli, Ariano Donati, Gianni Landini, Filomena Schiavone, John Buchan Stephen, Giulio Ventura, Stefano Del Sordo, Salvatore Giarrusso, M. Strazzeri, Gianfranco Taiocchi

Author Affiliations +

Proceedings Volume 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy; (2003) https://doi.org/10.1117/12.461339
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The CACTuS (Compact Array of Cadmium Telluride Micro Spectrometers) instrument was constructed as a prototype detection plane for the Coded Imager and Polarimeter for High Energy Radiation (CIPHER) telescope. The instrument, flown as a 'piggy-back' experiment on a stratospheric balloon as part of the Summer 2002 trans-mediterranean flight campaign from the Milo Italian balloon base in Sicily, was constructed in order to verify the feasibility of using this kind of position sensitive detector for hard X and soft gamma ray polarimetry and imaging, with the objective of studying the instrumental background at stratospheric balloon altitudes over the 20-1000 keV energy range. Of particular interest is the spectrum and distribution of Compton scattered events that trigger two pixel (double) events, the recognition of which is essential for providing a high sensitivity to linear polarisation. It was also used to evaluate the efficiency and the reliability of an off-line numerical algorithm to be applied to the CdTe flight data for signal compensation, which uses the amplitudes obtained by readout electronics with a double shaping filter stage.

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Ezio Caroli, Ariano Donati, Gianni Landini, Filomena Schiavone, John Buchan Stephen, Giulio Ventura, Stefano Del Sordo, Salvatore Giarrusso, M. Strazzeri, and Gianfranco Taiocchi "Compact array of CdTe spectrometers for a prototype balloon flight", Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, (11 March 2003); https://doi.org/10.1117/12.461339

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