0000000000919878

AUTHOR

Y. André

showing 2 related works from this author

INTEGRAL/SPI ground calibration

2003

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.

Point source[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]FOS: Physical sciencesInstrumentation ; Detectors ; Spectrographs ; Space vehicles ; Gamma rays ; ObservationsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAAstrophysics01 natural sciences[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]OpticsSpectrographs0103 physical sciencesCalibrationSource separationAngular resolutionSpectral resolutionspace vehicles: instrumentsInstrumentation010303 astronomy & astrophysicsObservations:ASTRONOMÍA Y ASTROFÍSICA::Astronomía óptica [UNESCO]instrumentation: spectrographsPhysicsSpectrometer[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]010308 nuclear & particles physicsbusiness.industryinstrumentation: detectorsUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Astronomía ópticaGamma raysAntenna apertureAstrophysics (astro-ph)DetectorsSpace vehiclesAstronomy and AstrophysicsOptical axisSpace and Planetary Sciencebusiness:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]gamma rays: observations
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SPI: The spectrometer aboard INTEGRAL

2003

SPI is a high spectral resolution gamma-ray telescope on board the ESA mission INTEGRAL (International Gamma Ray Astrophysics Laboratory). It consists of an array of 19 closely packed germanium detectors surrounded by an active anticoincidence shield of BGO. The imaging capabilities of the instrument are obtained with a tungsten coded aperture mask located 1.7 m from the Ge array. The fully coded field-of-view is 16º, the partially coded field of view amounts to 31º, and the angular resolution is 2.5º. The energy range extends from 20 keV to 8 MeV with a typical energy resolution of 2.5 keV at 1.3 MeV. Here we present the general concept of the instrument followed by a brief description of …

Astrophysics::High Energy Astrophysical PhenomenaField of viewSpectroscopicUNESCO::ASTRONOMÍA Y ASTROFÍSICAlaw.inventionTelescopeOpticslawAngular resolutionCoded apertureSpectral resolutionSpectrographDetector ; Spectrograph ; Techniques ; Spectroscopic:ASTRONOMÍA Y ASTROFÍSICA::Astronomía óptica [UNESCO]PhysicsSpectrographSpectrometerbusiness.industryUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Astronomía ópticaResolution (electron density)Astrophysics::Instrumentation and Methods for AstrophysicsAstronomy and AstrophysicsDetectorTechniquesSpace and Planetary Sciencebusiness:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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