Simulations of Galactic Cosmic Ray Impacts on the Herschel/PACS bolometer Arrays with Geant4 Code

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dc.creatorBongardo, C.
dc.creatorAndreani, P. M.
dc.creatorOkumura, K.
dc.creatorHoreau, B.
dc.creatorClaret, A.
dc.creatorDe Zotti, G.
dc.creatorGiannitrapani, R.
dc.creatorLongo, F.
dc.date2008-06-30
dc.date.accessioned2026-07-07T12:14:51Z
dc.date.available2026-07-07T12:14:51Z
dc.descriptionThe effects of the in-flight behaviour of the bolometer arrays of the Herschel/PACS instrument under impacts of Galactic cosmic rays are explored. This instrument is part of the ESA-Herschel payload, which will be launched at the end of 2008 and will operate at the Lagrangian L2 point of the Sun-Earth system. We find that the components external to the detectors (the spacecraft, the cryostat, the PACS box, collectively referred to as the `shield') are the major source of secondary events affecting the detector behaviour. The impacts deposit energy on the bolometer chips and influence the behaviour of nearby pixels. 25% of hits affect the adjacent pixels. The energy deposited raises the bolometer temperature by a factor ranging from 1 to 6 percent of the nominal value. We discuss the effects on the observations and compare simulations with laboratory tests.
dc.descriptionExperimental Astronomy, 2008, in press
dc.identifierhttps://arxiv.org/abs/0806.4832
dc.identifierhttp://arxiv.org/abs/0806.4832
dc.identifierExp.Ast.22:109-128,2008
dc.identifierdoi:10.1007/s10686-008-9110-0
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211336
dc.subjectAstrophysics
dc.titleSimulations of Galactic Cosmic Ray Impacts on the Herschel/PACS bolometer Arrays with Geant4 Code
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