A new method on diagnostics of muons produced by a short pulse laser-中国期刊网

摘要 Muonsproducedbyashortpulselasercanserveasanewtypeofmuonsourcehavingpotentialadvantagesofhighintensity,smallsourceemittance,shortpulsedurationandlowcost.Tovalidateitinexperiments,asuitablemuondiagnosticssystemisneededsincehighmuonfluxgeneratedbyashortpulselasershotisalwaysaccompaniedbyhighradiationbackground,whichisquitedifferentfromcasesingeneralmuonresearches.Adetectionsystemisproposedtodistinguishmuonsignalsfromradiationbackgroundbymeasuringthemuonlifetime.Itisbasedonthescintillatordetectorwithwaterandleadshields,inwhichwaterisusedtoadjustenergiesofmuonsstoppedinthescintillatorandleadtoagainstradiationbackground.AGeant4simulationontheperformanceofthedetectionsystemshowsthatefficiencyupto52%couldbearrivedforlow-energymuonsaround200MeVandthisefficiencydecreasesto14%forhigh-energymuonsabove1000MeV.Thesimulationalsoshowsthatthemuonlifetimecanbederivedproperlybymeasuringattenuationofthescintillalightofelectronsfrommuondecaysinsidethescintillatordetector.

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A new method on diagnostics of muons produced by a short pulse laser

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A new method on diagnostics of muons produced by a short pulse laser

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