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Inflight proton activation and damage on a CdTe detection plane

2018Journal article Restricted access
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dc.contributor.authorSimões, N.
dc.contributor.authorMaia, Jorge
dc.contributor.authorSilva, Rui M. C.
dc.contributor.authorGhithan, S.
dc.contributor.authorCrespo, P.
dc.contributor.authorCarmo, Sérgio J. C. do
dc.contributor.authorAlves, Francisco José Cerqueira
dc.contributor.authorMoita, Miguel
dc.contributor.authorAuricchio, Natalia
dc.contributor.authorCaroli, Ezio
dc.date.accessioned2019-01-18T16:19:38Z
dc.date.available2019-01-18T16:19:38Z
dc.date.issued2018
dc.description.abstractFuture high-energy space telescope missions require further analysis of orbital environment induced activation and radiation damage on main instruments. A scientific satellite is exposed to the charged particles harsh environment, mainly geomagnetically trapped protons (up to ∼300 MeV) that interact with the payload materials, generating nuclear activation background noise within instruments’ operational energy range and causing radiation damage in detector material. As a consequence, instruments’ performances deteriorate during the mission time-frame. In order to optimize inflight operational performances of future CdTe high-energy telescope detection planes under orbital radiation environment, we measured and analyzed the effects generated by protons on CdTe ACRORAD detectors with 2.56 cm2 sensitive area and 2 mm thickness. To carry-out this study, several sets of measurements were performed under a ∼14 MeV cyclotron proton beam. Nuclear activation radionuclides’ identification was performed. Estimation of activation background generated by short-lived radioisotopes during one day was less than ∼1.3×10−5 counts cm−2 s−1 keV−1 up to 800 keV. A noticeable gamma-rays energy resolution degradation was registered (∼60% @ 122 keV, ∼14% @ 511 and ∼2.2% @ 1275 keV) after an accumulated proton fluence of 4.5×1010 protons cm−2, equivalent to ∼22 years in-orbit fluence. One year later, the energy resolution of the irradiated prototype showed a good level of performance recovery.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.nima.2017.09.017pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/6801
dc.language.isoengpt_PT
dc.subjectCdTept_PT
dc.subjectGamma-ray detectorspt_PT
dc.subjectAstrophysicspt_PT
dc.subjectSpace radiationpt_PT
dc.subjectActivationpt_PT
dc.subjectRadiation damagept_PT
dc.titleInflight proton activation and damage on a CdTe detection planept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage191pt_PT
oaire.citation.startPage183pt_PT
oaire.citation.volume877pt_PT
person.familyNameMaia
person.familyNameCurado da Silva
person.familyNameCrespo
person.familyNameCerqueira Alves
person.familyNameFernandes Moita
person.familyNameAuricchio
person.familyNameCaroli
person.givenNameJorge
person.givenNameRui Miguel
person.givenNamePaulo
person.givenNameFrancisco José
person.givenNameMiguel
person.givenNameNatalia
person.givenNameEzio
person.identifier1306911
person.identifier.ciencia-id9418-22AF-6C25
person.identifier.ciencia-idDE18-4FCE-42DB
person.identifier.ciencia-idD41B-EAC6-8C11
person.identifier.ciencia-idA61A-16CA-3455
person.identifier.orcid0000-0002-9314-1763
person.identifier.orcid0000-0002-9961-965X
person.identifier.orcid0000-0002-0891-032X
person.identifier.orcid0000-0001-8054-4267
person.identifier.orcid0000-0002-8240-509X
person.identifier.orcid0000-0003-4444-8651
person.identifier.orcid0000-0001-8468-7433
person.identifier.ridK-1344-2015
person.identifier.ridG-1427-2012
person.identifier.scopus-author-id35586314300
person.identifier.scopus-author-id6506879465
person.identifier.scopus-author-id7006393279
person.identifier.scopus-author-id7005934304
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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