Physics
Scientific paper
Nov 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003nimpa.513..357c&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 513, Issue 1-2, p. 357-361.
Physics
Cdte Spectrometers, X- And Γ-Radiation, Stratospheric Balloon, Polarimetry, Background
Scientific paper
The Compact Array of Cadmium Telluride Micro Spectrometers (CACTμS) 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 from the Milo Italian balloon base in Sicily in July 2002, was constructed to verify the feasibility of using this kind of position sensitive detector for hard X- and soft γ-ray polarimetry and imaging. The main objective was to study the instrumental background at stratospheric balloon altitudes over the 20-1000keV energy range. Of particular interest is the spectrum and distribution of Compton scattered events that trigger two pixel, the recognition of which is essential for providing a high sensitivity to linear polarization. The CACTμS data will be also used to evaluate the efficiency and the reliability of an off-line numerical algorithm for CdTe signal compensation, which uses the amplitudes obtained by a double shaping filter stage readout electronics. Herein we present both a description of the experiment and preliminary results from the flight data.
Caroli Ezio
Celi Filippo
Del Sordo Stefano
Donati Ariano
Giarrusso Salvo
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