新型高性能脉冲峰值保持电路

17　4Vol.17No.419977NuclearElectronics&DetectionTechnologyJuly1997陈勇　李延国　吴枚(,,100039),(MWPC)(Phoswich)。,,,50ns(Phoswich)500ns(MWPC),40dB,0.1%,γ。:　1　[1～6]。60,()(A/D),,。[3](1),,,(,200mV),,。80,[1],。[1,2,6]。1　2　,,DC,,。A,,,。,,t1,VcVi,t1,D,,Vp:Vp=∫t0+t1t0A〔Vi(t)-V0(t)〕/〔C(Zd+ZC)〕dtZdZcDC,A。A241(～105),t1,。,。,80,2,Ir,,Vp=∫t0+t1t0{g〔Vi(t)-V0(t)〕/C}dtg,(10-2s)。Vc,,。,,,,。HAPI-4X,。,、、。,。,A=V0/Vi=g/(Ckj)(1/kj),C,,C,C。,,1,C1,,1。。[1],C(39pF)、(8),(10ns),(150MHz),(0.25%)。[2],C(220pF),(5×10-5),(2.2MHz)。,,,,。。,HAPI-4。,。,,,I0=gVi,g,Vi,,,。,,1。2　,(),(500ns),,,,(100mV),20μs,1。2.1　3。CA3080,,。CR2、CR4R4CR3,。R8C5。CMOS2N7000。LM310,,。2423　LM36174HC123、,,。Q1G,Q1,。,LM361,74HC123,Q1G,Q1,。,CA3080,。,CA3080,CR3CR4,CR2。td=0.7R12C9,74HC123,C4。。。2.2　,。CA30802MHz,,。-,R10、R8、C5R11,1/[2π(R10+R8+R11)C5]1/(2πR8C5),。4,8MHz(C4=22pF)。4　,,,,。。2.3　241Am,,,,241Am,。,,。。,。,。5,,。2.4　2438MHz,25V/μs,0.1%(rs=1.5μs),1,0.05～5.0V,0.5mV/μs。5　241Am(A,b)3　[4]。NaI50ns,rs50ns,(0.2～5.0V),。20μs,1。3.1　6。,MAX436,6　200MHz,800V/μs,AD847。AD847(300kΨ),Q2(3DO2G)。0.2～5.0V,MAX4363.5V,,1,LF3472。3.2　MAX436、。(7)(K)。V0=K(Z1/Zt)Vi。,。8。MAX436,A=KC6/〔C7(1+R6C6kj)1/kj,1/2πR6C6,2447　MAX436C7,,。,,1。,R6、C6C7,。,,8　。3.3　137Cs9,。3.4　500Ψ,500MHz,0.1%(rs=100ns),100V/μs,0.05～5.00V,1,1.0mV,0.5mV/μs。9　137Cs3.5　,LH0033,。,。4　,,,,。。,。,(1/kj)。,,。　　　1　HaasW,DullankopfP.Anovelpeakamplitudeandtimedelectorfornarrowpulsesignals.IEEETrans,1986.IM35(4):547.2　BuckensPF,VeatchMS.Ahighperformancepeak-detect&holdcircuitforpulseheightanalysis.IEEETransNuclSci,1992.NS39(4):753.3　..,1986.6(1):63.2454　,,...1992.:74.5　KepplerE,GlasmachersA,WinkelnkemperW.Newdesignaspectsforanenergeticparticletelescopeforspacemissions.IEEETrans,1981.IM30(3):177.6　KruiskampMW,LeenaertsDMW.ACMOSpeakdetectsampleandholdcircuit.IEEETransNuclSci,1994.NS41(1):295.(199675　)TwoKindsofNovelHighPerformancePulsePeakHoldCircuitChenYong　　LiYanguo　　WuMei(InstituteofHighEnergyPhysics,AcademiaSinica,Beijing,100039)AbstractInthispaperweintroducetwokindsofnoveltransconductanceamplifierpeakholdcircuit.Theyareap-pliedinpulseshapeandheightanalysisoftheoutputsignalsofmulti-wireproportionalchamber(MWPC)andphoswichrespectively.Weusedintegratedtransconductanceamplifiertoachievesimplearchitectureandhighperformance.Theminimumrisetimeoftheinputpulsein50ns(phoswich)and500ns(MWPC).Theintegralnon-linearityofbothcircuitsisbetterthan0.1%withinapulseamplituderangeof40dB.Therefore,theyaresuitableforspaceγrayobservations.(KeyWords:Pulsepeak-holdcircuit　　Transconductanceamplifier)【】,,26,;,,48,;,,54,。(268,Continuedfrompage268)TheCharactersiticsofSoftXRaySourceonBeijingSynchrotronRadiationFacilityandCalibrationofDetectorSensitivityCuiMingqi　　CuiCongwu　　LiGang(InstituteofHighEnergyPhysics,AcademiaSinica,Beijing,100039)YiRongqing　　SunKexu　　YangJiamin　　WenShuhuai(InstituteofNuclearPhysicsandChemistryofCAEP,P.O.Box525,Chengdu610003)AbstractAsoftXraysourceofbeamline3B1onBeijingSynchrotronRadiationFacility(BSRF)isintroduced.Thecharactersiticsofthesource,i.e.theresolutionsofenergy,theabsolutefluxofphotonandlinearityofoutputintensityhavebeenmeasuredandanalyzed.ThesensitivityofsoftXraydetectorhasbeencalibratedwiththissource.Somegoodresultshavebeengotten.(KeyWords:Synchrotronradiation　　SoftXray　　Calibrationofdetector)【】,,48,,,;,,29,,;,,28,;,,32,;,,56,;,,29,;,,60,。246