INTEGRAL/SPI ground calibration

Details INTEGRAL/SPI ground calibration INTEGRAL/SPI ground calibration

2003-08-28

arxiv.org/abs/astro-ph/0308504v1

Astronomy and Astrophysics

Astrophysics

9 pages, 12 figures, 2 tables. Accepted for publication in A&AL (INTEGRAL Special issue)

Scientific paper

10.1051/0004-6361:20031302

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 deg and the source separation capability about 1 deg. Some temperature dependant parameters will require permanent in-flight calibration.

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