Calibration of the spectrometer aboard the INTEGRAL satellite

Stephane Schanne; Bertrand Cordier; Maurice Gros; David Attie; Peter von Ballmoos; Laurent Bouchet; Raffaelo Carli; Paul Connell; Roland Diehl; Pierre Jean; Juergen Kiener; Andreas von Kienlin; Juergen Knoedlseder; Phillipe Laurent; Giselher G. Lichti; Pierre Mandrou; Jaques Paul; Philippe Paul; Jean-Pierre Roques; Filomeno Sanchez; Volker Schoenfelder; Chris Shrader; Gerald K. Skinner; Andrew W. Strong; Steven John Sturner; Vincent Tatischeff; Bonnard J. Teegarden; Gilbert Vedrenne; Georg Weidenspointner; Cornelia B. Wunderer

doi:10.1117/12.461604

11 March 2003 Calibration of the spectrometer aboard the INTEGRAL satellite

Stephane Schanne, Bertrand Cordier, Maurice Gros, David Attie, Peter von Ballmoos, Laurent Bouchet, Raffaelo Carli, Paul Connell, Roland Diehl, Pierre Jean, Juergen Kiener, Andreas von Kienlin, Juergen Knoedlseder, Phillipe Laurent, Giselher G. Lichti, Pierre Mandrou, Jaques Paul, Philippe Paul, Jean-Pierre Roques, Filomeno Sanchez, Volker Schoenfelder, Chris Shrader, Gerald K. Skinner, Andrew W. Strong, Steven John Sturner, Vincent Tatischeff, Bonnard J. Teegarden, Gilbert Vedrenne, Georg Weidenspointner, Cornelia B. Wunderer

Author Affiliations +

Proceedings Volume 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy; (2003) https://doi.org/10.1117/12.461604
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

SPI, the Spectrometer on board the ESA INTEGRAL satellite, to be launched in October 2002, will study the gamma-ray sky in the 20 keV to 8 MeV energy band with a spectral resolution of 2 keV for photons of 1 MeV, thanks to its 19 germanium detectors spanning an active area of 500 cm². A coded mask imaging technique provides a 2° angular resolution. The 16° field of view is defined by an active BGO veto shield, furthermore used for background rejection. In April 2001 the flight model of SPI underwent a one-month calibration campaign at CEA in Bruyères le Châtel using low intensity radioactive sources and the CEA accelerator for homogeneity measurements and high intensity radioactive sources for imaging performance measurements. After integration of all scientific payloads (the spectrometer SPI, the imager IBIS and the monitors JEM-X and OMC) on the INTEGRAL satellite, a cross-calibration campaign has been performed at the ESA center in Noordwijk. A set of sources has been placed in the field of view of the different instruments in order to compare their performances and determine their mutual influence. We report on the scientific goals of this calibration activity, and present the measurements performed as well as some preliminary results.

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Stephane Schanne, Bertrand Cordier, Maurice Gros, David Attie, Peter von Ballmoos, Laurent Bouchet, Raffaelo Carli, Paul Connell, Roland Diehl, Pierre Jean, Juergen Kiener, Andreas von Kienlin, Juergen Knoedlseder, Phillipe Laurent, Giselher G. Lichti, Pierre Mandrou, Jaques Paul, Philippe Paul, Jean-Pierre Roques, Filomeno Sanchez, Volker Schoenfelder, Chris Shrader, Gerald K. Skinner, Andrew W. Strong, Steven John Sturner, Vincent Tatischeff, Bonnard J. Teegarden, Gilbert Vedrenne, Georg Weidenspointner, and Cornelia B. Wunderer "Calibration of the spectrometer aboard the INTEGRAL satellite", Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, (11 March 2003); https://doi.org/10.1117/12.461604

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