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Novel detectors for silicon based microdosimetry, their concepts and applications

Journal Article


Abstract


  • This paperpresentsanoverviewofthedevelopmentofsemiconductormicrodosimetryandthemost

    current (state-of-the-art)SilicononInsulator(SOI)detectorsformicrodosimetrybasedmainlyon

    researchanddevelopmentcarriedoutattheCentreforMedicalRadiationPhysics(CMRP)attheUni-

    versity ofWollongongwithcollaboratorsoverthelast18years.InthispapereverygenerationofCMRP

    SOI microdosimeters,includingtheirfabrication,design,andelectricalandchargecollectioncharacter-

    isation arepresented.AstudyofSOImicrodosimetersinvariousradiation fields hasdemonstratedthat

    under appropriategeometricalscaling,theresponseofSOIdetectorswiththewell-knowngeometryof

    microscopicallysensitivevolumeswillrecordtheenergydepositionspectrarepresentativeoftissuecells

    of anequivalentshape.ThisdevelopmentofSOIdetectorsformicrodosimetrywithincreasedcomplexity

    has improvedthedefinition ofmicroscopicsensitivevolume(SV),whichismodellingthedepositionof

    ionising energyinabiologicalcell,thatareledfromplanarto3DSOIdetectorswithanarrayofseg-

    mented microscopic3DSVs.Themonolithic ΔEE silicon telescope,whichisanalternativetotheSOI

    silicon microdosimeter,ispresented,andasanexample,applicationsofSOIdetectorsand ΔEE

    monolithic telescopeformicrodosimeteryinprotontherapy field andequivalentneutrondosemea-

    surements outof field arealsopresented.AnSOImicrodosimeter “bridge” with 3DSVscanderivethe

    relativebiologicaleffectiveness(RBE)in 12C ionradiationtherapythatmatchesthetissueequivalent

    proportional counter(TEPC)quitewell,butwithoutstandingspatialresolution.TheuseofSOItech-

    nology inexperimentalmicrodosimetryofferssimplicity(nogassystemorHVsupply),highspatial

    resolution, lowcost,highcountrates,andthepossibilityofintegratingthesystemontoasingledevice

    with othertypesofdetectors.

Publication Date


  • 2016

Citation


  • Rosenfeld, A. B. (2016). Novel detectors for silicon based microdosimetry, their concepts and applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 809 156-170.

Scopus Eid


  • 2-s2.0-84959340020

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4861

Number Of Pages


  • 14

Start Page


  • 156

End Page


  • 170

Volume


  • 809

Abstract


  • This paperpresentsanoverviewofthedevelopmentofsemiconductormicrodosimetryandthemost

    current (state-of-the-art)SilicononInsulator(SOI)detectorsformicrodosimetrybasedmainlyon

    researchanddevelopmentcarriedoutattheCentreforMedicalRadiationPhysics(CMRP)attheUni-

    versity ofWollongongwithcollaboratorsoverthelast18years.InthispapereverygenerationofCMRP

    SOI microdosimeters,includingtheirfabrication,design,andelectricalandchargecollectioncharacter-

    isation arepresented.AstudyofSOImicrodosimetersinvariousradiation fields hasdemonstratedthat

    under appropriategeometricalscaling,theresponseofSOIdetectorswiththewell-knowngeometryof

    microscopicallysensitivevolumeswillrecordtheenergydepositionspectrarepresentativeoftissuecells

    of anequivalentshape.ThisdevelopmentofSOIdetectorsformicrodosimetrywithincreasedcomplexity

    has improvedthedefinition ofmicroscopicsensitivevolume(SV),whichismodellingthedepositionof

    ionising energyinabiologicalcell,thatareledfromplanarto3DSOIdetectorswithanarrayofseg-

    mented microscopic3DSVs.Themonolithic ΔEE silicon telescope,whichisanalternativetotheSOI

    silicon microdosimeter,ispresented,andasanexample,applicationsofSOIdetectorsand ΔEE

    monolithic telescopeformicrodosimeteryinprotontherapy field andequivalentneutrondosemea-

    surements outof field arealsopresented.AnSOImicrodosimeter “bridge” with 3DSVscanderivethe

    relativebiologicaleffectiveness(RBE)in 12C ionradiationtherapythatmatchesthetissueequivalent

    proportional counter(TEPC)quitewell,butwithoutstandingspatialresolution.TheuseofSOItech-

    nology inexperimentalmicrodosimetryofferssimplicity(nogassystemorHVsupply),highspatial

    resolution, lowcost,highcountrates,andthepossibilityofintegratingthesystemontoasingledevice

    with othertypesofdetectors.

Publication Date


  • 2016

Citation


  • Rosenfeld, A. B. (2016). Novel detectors for silicon based microdosimetry, their concepts and applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 809 156-170.

Scopus Eid


  • 2-s2.0-84959340020

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4861

Number Of Pages


  • 14

Start Page


  • 156

End Page


  • 170

Volume


  • 809