INTEGRAL/SPI ground calibration

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 si...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2003-11, Vol.411 (1), p.L71-L79
Hauptverfasser:	Attié, D., Cordier, B., Gros, M., Laurent, Ph, Schanne, S., Tauzin, G., von Ballmoos, P., Bouchet, L., Jean, P., Knödlseder, J., Mandrou, P., Paul, Ph, Roques, J.-P., Skinner, G., Vedrenne, G., Georgii, R., von Kienlin, A., Lichti, G., Schönfelder, V., Strong, A., Wunderer, C., Shrader, C., Sturner, S., Teegarden, B., Weidenspointner, G., Kiener, J., Porquet, M.-G., Tatischeff, V., Crespin, S., Joly, S., André, Y., Sanchez, F., Leleux, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics Cosmology and Extra-Galactic Astrophysics gamma rays: observations instrumentation: detectors instrumentation: spectrographs Physics Sciences of the Universe space vehicles: instruments
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Beschreibung
Zusammenfassung:	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 cm2 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.
ISSN:	0004-6361 1432-0746 1432-0756
DOI:	10.1051/0004-6361:20031302