EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 411/1 Article
Free access article

Issue A&A
Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
Page(s) L71 - L79
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20031302



A&A 411, L71-L79 (2003)
DOI: 10.1051/0004-6361:20031302

Letter

INTEGRAL/SPI ground calibration

D. Attié1, B. Cordier1, M. Gros1, Ph. Laurent1, S. Schanne1, G. Tauzin1, P. von Ballmoos2, L. Bouchet2, P. Jean2, J. Knödlseder2, P. Mandrou2, Ph. Paul2, J.-P. Roques2, G. Skinner2, G. Vedrenne2, R. Georgii3, A. von Kienlin3, G. Lichti3, V. Schönfelder3, A. Strong3, C. Wunderer3, C. Shrader4, S. Sturner4, B. Teegarden4, G. Weidenspointner4, J. Kiener5, M.-G. Porquet5, V. Tatischeff5, S. Crespin6, S. Joly6, Y. André7, F. Sanchez8 and P. Leleux9

1  DSM/DAPNIA/Service d'Astrophysique, CEA Saclay, 91191 Gif-sur-Yvette, France,
2  Centre d'Études Spatiales des Rayonnements, 9 avenue du Colonel Roche, 31028 Toulouse, France
3  Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany
4  NASA/Goddard Space Flight Center, code 661, Greenbelt, MD 20771, USA
5  Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3-CNRS, 91405 Orsay Campus, France
6  CEA Bruyères-le-Châtel, BP 12, 91680 Bruyères-le-Châtel, France
7  CNES/Centre Spatial de Toulouse, 18 avenue E. Belin, 31401 Toulouse, France
8  Universitat de Valencia, IFIC, Dr Moliner 50, 46100 Burjassot, Valencia, Spain
9  Univ. of Louvain, chemin du Cyclotron, 1348 Louvain-La-Neuve, Belgium

(Received 14 July 2003 / Accepted 26 August 2003)

Abstract
Three calibration campaigns of the spectrometer SPI have been performed before launch in order to determine the instrument characteristics, such as the effective detection area, the spectral resolution and the angular resolution. Absolute determination of the effective area has been obtained from simulations and measurements. At 1 MeV, the effective area is 65 cm 2 for a point source on the optical axis, the spectral resolution ~2.3 keV. The angular resolution is better than 2.5° and the source separation capability about 1°. Some temperature dependant parameters will require permanent in-flight calibration.


Key words: instrumentation: detectors -- instrumentation: spectrographs -- space vehicles: instruments -- gamma rays: observations

Offprint request: D. Attié, David.Attie@cea.fr




© ESO 2003


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.