讲义综合详解619 cus fai018 measure and record the cathode voltage guni pulse amplitude

FieldAction MeasureandRecordtheCathodeVoltageandtheGunIPulseAmplitudeMaterialsYouStandardFSEBlankServiceProceduresYouMayCurrentRevision(Foracompleterevisionhistory,seethelastA23JuneInitialA.Peterson,H.TosavetimeduringAOMtuning,theoutputvalues(CathodeVoltageandGunIPulseAmplitude)ofeachinstalledInjectorBoardwillberecordedontheLinacweldment.Note.Performthisfieldactionatoneofthennedmaintenanceintervalstoavoidextrapreparationandcheck-outtime.Field Page1of ThiscontainsorproprietaryinformationofTomoTherapyorporated.Neitherthisnortheinformationcontainedthereinistobereproduced,distributed,usedordisclosed,eitherinwholeorinpart,exceptasspecificallyauthorizedbyTomoTherapyorporated. ApplyaNew theServicePerformed RestoretheSystem,CheckOut,andSubmit UseTable1torecordthemeasurementsyouwilltakethroughoutthisTable1:CathodeVoltageandGunIOutputGunIItisnotnecessarytorecordthePhysics-leveloutputvaluesasthesewillbedeterminedusingAOMTuningGuide(T-SVC-Note.At ofthisfieldaction,youwillapplyanewlabeltotheLinacweldment.Donotproceedwiththisfieldactionuntilyouhavereceivedablanklabelforrecordingthesevalues.PreparetheDANGER!HIGHVOLTAGE!EvenwhenpowertotheRadiationDeliverySystem(RDS)isoff,electricalshockfromstoredchargescanresultinalinjuryordeath.SwitchPDUCB1toAllowthreeminutesafterswitchingoffCB1atthePDUfortheInjectorBoardtodischarge.Usea#2PhillipsscrewdrivertoremovetheInjectorBoardcovergroundingwirefromthewireattachedtotheInjectorBoardcover.FigureLoosenthe10captivethumbscrewsontheInjectorBoardcover(Figure2),andliftthecovertoaccesstheInjectorBoard.SwitchCB1toRecordStarttheSSMTestRuntheSSMTestUtilityatMVCTLevelusingthemostrecentlydeterminedAOMsettings.MeasureandrecordtheGunIPulseAmplitude(Figure3)inTable1.

FigureMeasuretheGunIPulseAmplitudeatthe50%pulsewidthFigureKeeptheSSMTestUtilityopen,butturnoffthebeamandopentheentranceinterlock.MeasureandrecordtheCathodeVoltageinTable1.UseanHVprobeandDMMsettoDC(whitewire)andground(InjectorBoardchassis)(Figure4).DANGER!HIGHUseextremecautionwhenworkingaroundapoweredInjectorBoard;upto-15kVispresentandsevereinjuryordeathfromelectricalshockcouldoccur.Ifneeded,rotatethegantrysothattheLinacisatthe12:00position.FigureConnectthegroundwireofanHVprobetothechassisoftheInjectorBoardbaseassembly(Figure5).TouchtheprobetotheTB8-3oftheK4relayswitchontheTransformerRelayAssemblytoactivatehighvoltage(Figure6).RepeatStep2throughStep4forthedeterminedAOMsettings.ApplyaNewShutdownthe

FigureFigureRecetheInjectorBoardCopytheCathodeVoltageandGunIPulseAmplitudevaluesfromTable1ontoanew,blanklabel(Figure7).RecordtheLinacserialnumberonthenewlabelaswell.ApplythelabeltotheLinacweldmentneartheInjectorBoardasshowninFigure8.Toensurethatthelabelremainsadhered,cleantheareabeforeyouapplythetheService theserviceyouperformedinaservicereport.Continuetoanotherserviceprocedure,ifneeded,orcontinuetoRestoretheSystem,CheckOut,andSubmitReports.RestoretheSystem,CheckOut,andSubmit

FigureFigureRestorethesystemforclinicalusebyfollowingthePre-andPost-ServiceProceduresintheserviceguide.A23JuneInitialA.Peterson,H.GunIHi.ArtFSE00:15需要的材料标准FSE工具包□空白标签服务程序您可能需要服务前和服务后程序(T-SVC-00006)□ESD控制程序(P9-4)□对喷射器板进行放电(T-SVC-00014)A2009623A.PetersonHRingenAOM（GunI）将记录1（5）TomoTherapyorporatedTomoTherapyorporated的机密或专有信息。除非经TomoTherapyorporated特别授权，否则不得全部A11GunIMVCTkVkVGunImAmA理级输出值，因为这些值将使用AOM调谐指南(T-SVC-00124)确定。PDU