核脉冲波形甄别

29120062ELECTRONICMEASUREMENTTECHNOLOGY纪圣谋刘先昆潘红兵徐健健南京大学,DSPA/D,,,,NuclearpulseshapediscriminationbasedonDSPtechniquesJiShengmouLiuXiankunPanHongbingXuJianjianAbstractNuclearpulseshapepile-upanditstraditionalprocessingcircuitareanalyzedindetail.AschemeofpulseshapediscriminationsystembasedonDSPandhigh-speedA/Dconvertertechniquesarepresented.Besidesrejectingpulsepile-upandimplementingpulseheightmeasurementeffectively,italsoreducesthesystemdeadtimeandsimplifythedesignofanalogcircuit.Onthebasisofthissystem,itiseasilytoconstructadigitalmeasurementinstrumentsuchassingle-channelandmult-ichannelanalyzer.KeywordsPile-upPulseshapediscrimination1[1](MCA)A/D1,1,,,,[2]2,,,22,1~2kHz,,[1],33T,tW,tMTtW-tMtMT0,,,,3(a)tW-tMTtM,,,,,,3(b),,,#58#,,3DSPA/D,(MCA)(SCA)4,4DSP,1MHz,TMS320C6201DSP,200MHz,1600MIPSA/D12bitADS800U,40MHz55DSPA/DADS800UFPGARAM,RAMDSP66UL,A/D(t1)LL,A/D(t3)H,TW=t2-t1$t=t3-t1,t3ULTW1Ls,40,DSP,:t2h2t1h1,TW=t2-t1;E1,E2,tM1,tM2;T3(a),3(b)T=tM2-tM1,,10%,FWHM,A/D,57Co,,7,,757Co,,,TMS320C6201DSP,,,,[1].[M].,1987.[2].DSP[J]..2004.24(5).#59#1纪圣谋等:核脉冲波形甄别