By Topic

The space-borne INTEGRAL-SPI gamma ray telescope: test and calibration campaigns

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

18 Author(s)
S. Schanne ; Commissariat a l'Energie Atomique, CEA Saclay, Gif-sur-Yvette, France ; B. Cordier ; M. Gros ; M. Mur
more authors

The spectrometer SPI aboard the ESA INTEGRAL satellite, which will be launched in 2002, will study the gamma ray sky in the 20-keV to 8-MeV energy band. It achieves the excellent spectral resolution of about 2 keV for photons of 1 MeV thanks to its 19 germanium detectors. A coded mask imaging technique provides an angular resolution of 2°. An active BGO veto shield is used for the definition of the field of view and for background rejection. After integration and testing at CNES in Toulouse, the flight model of SPI recently underwent a one-month prelaunch calibration at the CEA center of Bruyeres le Chatel, using an accelerator for homogeneity measurements and high-activity radioactive sources for imaging performance measurements. This paper presents the scientific goals and the different detector components of SPI and reports on the testing and calibration campaigns. The methods used to achieve good timing alignment using the digital front end electronics are described and the first detector performance and imaging capabilities are presented.

Published in:

IEEE Transactions on Nuclear Science  (Volume:49 ,  Issue: 3 )