12MeV直线感应电子加速器

319961125,19971029,,19644,,12MeV(,52356,610003)12MeV(LIA)10MeVLIA,10MeVLIA,12MeV;,,10MeVLIA12MeVLIA,12MeV,2.6kA,89ns,4mm(LIA),,LIA,,[16],X12MeVLIA19943,10MeVLIA(1994)[7]:12MV;2kA;60ns;6mm112MeVLIA,1220V50Hz,Marx2Blumlein([7]),2Marx,MarxBlumlein,1MeV10kA90ns(FWHM)108ö(rad2m)2,,2.8kA32,90ns(FWHM),360kV,3,545450500A(3)0.6T494Vol.9,No.4199711HIGHPOWERLASERANDPARTICLEBEAMSNov.9,1997©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Fig.1Thelayoutofthe12MeVLIA112MeVLIAFig.2Theprocessofpowermodulationforthe12MeVLIA212MeVLIAFig.3Thesectionofanacceleration2cell3Fig.4(a)Theschematicofalens(b)Itsaxialmagneticfieldmeasuredontheaxisofsysmmetryzforacoilcurrentof380A422.110MeVLIA[7],12MeVLIA,,11.3MV,12MV,30kV,Marx0069©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.MarxÊ[8],Marx123428Blumlein(),Marx58Blumlein,,,32,36(,10MeVLIA,),,,,,:(1),(2),,,MarxBlumlein(3),,5ns52.22.2.112MeVLIA20m,,[9],(BC)0,R(z)+(k2cö4-k2s)R(z)-E2nö(B2C2R3)=0(1),R(z);C;kc=eBöBCmc;eöm;B;c;k2s=2IöI0B3C3R2,I,I0=mc3öe;En,10MeVLIA,(1),,,,,,10,54,,,,Fig.5Typicalaccelerationvoltage5Fig.6Thedistributionlayoutoffocusingsystem6Corkscrew,x2zA,[10]x(z,t)=(sinAökc)sin[kcz-kcz$C(t)öC0]y(z,t)=(sinAökc)[1-cos(kcz-kcz$C(t)öC0)](2)1064:12MeV©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,$C(t)öC0(Corkscrew),,,,,;,,,Corkscrew;,,$C(t)öC0BBU10MeVLIA,,12MeVLIABBU2.2.2SL1SL3[11],,6,2.317891Table1Theresultsofthecontinuous10-shotsexperimentsShotNo.VöMVIökApulsewidthönschargeöLC51912.002.648920552012.012.558920552111.992.668921752211.992.68921552312.012.48920752412.062.648921452512.022.628921152612.022.678922352712.092.528919752812.012.6989218Fig.7Typicaltargetingcurrentanditscentroiddisplacement72069©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Fig.8Theburnmarkofrepeatedexperimentsonthetarget8210MeVLIA12MeVLIATable2Comparaingofperformanceparametersforthe10MeVLIAand12MeVLIA10MeVLIA12MeVLIAenergyöMeV10.312.1beamökA2.12.6pulsewidthöns7089spotsizeömm464Fig.9Theblackintensitycurveofthespotsize9310MeVLIA,12MeVLIA,,,,210MeVLIA12MeVLIA1ClarkCetal.UCRL2992022NoPersond.ATALLLData(1980)3PavlovskiiAI.Beams92,2734KawasakiS.Beams92,2555KishiroJ.IEEEPAC,1993:6736PhEyharts.IEEEPAC,1993:6707.Proc.10MeVLIA,1994.198.Proc.10MeVLIA,1994.739.,1995,7(4):58310TurnerWC.IEEEPAC,1991:58111.,1996,8(2):2093064:12MeV©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.12MeVLINEARINDUCTIONELECTRONACCELERATORShiJinshui,DingBainan,DengJianjun,HeYi,LiJin,DaiGuangsen,WenLongandCaoGuogaoSouthwestInstituteofFluidPhysics,POBox523256Chengdu,610003ABSTRACTThe12MeVLinearInductionAccelerator(LIA)comesfrompromotingbeamenergyandim2provingsystemsofthe10MeVLIA.Promotingbeamenergyisacquiredbythewayaddingfouracceleratingcellsaftertheacceleratingendofthe10MeVLIA.Inimprovingsystems,arenew2designeddistributionoftranspotingmagnetic2fieldandfocusingsystemaremoresuitablefortransportingandfocusingelectronbeams.Inthisway,andintenseelectronbeamwithenergy12MeV,current2.6kA,pulsewidth89ns(FWHM)andspotsize4mmcanbeobtainedattheoutputendofthe12MeVLIA.KEYWORDSLinearInductionAccelerator(LIA),pulsepower,beamtransportandfocus4069©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.