High Brightness Electron Beam Diagnostics and their ... - CASA

High Brightness Electron Beam Diagnostics and their ... - CASA High Brightness Electron Beam Diagnostics and their ... - CASA

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REPORTJLAB-TN-00-0699 ThisWorkhasbeenpreparedundertheUS-DOEcontractnumberDE-AC05-84ER40150,theOce ofNavalResearch,theCommonwealthofVirginiaandtheLaserProcessingConsortium. correspondingelectronicaddress:philippe.piot@desy.de

eratedupto48MeVpriortothelasingsystemconsistinginaplanarwigglerwhosespontaneousingacceleratorhasbeenbuiltandcommissionedatThomasJeersonNationalAcceleratorFacility. Thesystemisprincipallycomposedofa10MeVphotoinjectorcapableofdeliveringahighcharged (60pC)shortbunch(1ps)electronbeamwhichisinjectedinasuperconductinglinacandaccel- Abstract radiationisampliedwitharesonantcavity. ThepresentreportdetailsthediagnosticsthathavebeendevelopedandimplementedintheIRFEL driver-acceleratorforcharacterizingbothtransverseandlongitudinalphasespace.Wealsoreport Ahighpowerinfraredfree-electronlaser(IRFEL)facilitydrivenbyarecirculatingsuperconduct- ontheuseofthedevelopedinstrumentandrelatedtechniquestostudyandtrytounderstandsome BeamDynamicsproblemsinthedriver-accelerator.Whenpossible,wehavetriedtobenchmark laser,Bunchlengthcharacterization,Coherentradiation,Opticaltransitionradiation. measurementswithnumericalsimulations. Keywords:Electronbeamdynamics,Phasespace,Emittance,High-brightnessbeam,Free-electron temederecuperationd'energieaeteconstruitetrecemmentmisenrouteaThomasJeerson Resume Unlaseraelectronslibresinfrarouge(IRFEL)utilisantunaccelerateursupraconducteuravecsys- |||||{ NationalAcceleratorFacility.Lesystemesecomposeprincipalementd'uninjecteur,dontlasource lesapplicationsdecesdiagnosticsaquelquesproblemesdedynamiquedefaisceau.Quandcelafut phasetransversauxetlongitudinaldufaisceaud'electrondel'accelerateur.Nousdecrivonsaussi pouvantatteindre48MeV.Lesystemedeproductiondelumieresecomposed'unonduleurplan dontl'emissionspontaneeestamplieegr^aceaunecaviteoptiqueresonnante. Lepresentrapportdecritlesdiagnosticsquiontetedeveloppesandecaracteriserlesespacesde tronssontensuiteinjectesdansunaccelerateurlineaireouilssontacceleresjusqu'auneenergie d'electronsestbaseesurl'eetphotoelectrique.Cettesourcepeutproduiredespaquetsd'electron possiblenousavonstentedecomparerlesresultatsdenosmesuresavecdessimulationsnumeriques. fortementcharges(60pC)ultra-court(1ps),ayantuneenergiedel'ordrede10MeV.Ceselec- Mots-Clefs:Dynamiquedefaisceaud'electrons,Espacedephase,Emittance,Faisceaud'electrons afortebrillance,Laseraelectronslibres,Mesuredelalongueurdepaquetsd'electrons,Rayonnementcoherent,Rayonnementdetransitionoptique. |||||{

eratedupto48MeVpriortothelasingsystemconsistinginaplanarwigglerwhosespontaneousingacceleratorhasbeenbuilt<strong>and</strong>commissionedatThomasJeersonNationalAcceleratorFacility. Thesystemisprincipallycomposedofa10MeVphotoinjectorcapableofdeliveringahighcharged (60pC)shortbunch(1ps)electronbeamwhichisinjectedinasuperconductinglinac<strong>and</strong>accel- Abstract<br />

radiationisampliedwitharesonantcavity. Thepresentreportdetailsthediagnosticsthathavebeendeveloped<strong>and</strong>implementedintheIRFEL driver-acceleratorforcharacterizingbothtransverse<strong>and</strong>longitudinalphasespace.Wealsoreport Ahighpowerinfraredfree-electronlaser(IRFEL)facilitydrivenbyarecirculatingsuperconduct-<br />

ontheuseofthedevelopedinstrument<strong>and</strong>relatedtechniquestostudy<strong>and</strong>trytounderst<strong>and</strong>some <strong>Beam</strong>Dynamicsproblemsinthedriver-accelerator.Whenpossible,wehavetriedtobenchmark laser,Bunchlengthcharacterization,Coherentradiation,Opticaltransitionradiation. measurementswithnumericalsimulations. Keywords:<strong>Electron</strong>beamdynamics,Phasespace,Emittance,<strong>High</strong>-brightnessbeam,Free-electron<br />

temederecuperationd'energieaeteconstruitetrecemmentmisenrouteaThomasJeerson Resume Unlaseraelectronslibresinfrarouge(IRFEL)utilisantunaccelerateursupraconducteuravecsys- |||||{<br />

NationalAcceleratorFacility.Lesystemesecomposeprincipalementd'uninjecteur,dontlasource<br />

lesapplicationsdecesdiagnosticsaquelquesproblemesdedynamiquedefaisceau.Qu<strong>and</strong>celafut phasetransversauxetlongitudinaldufaisceaud'electrondel'accelerateur.Nousdecrivonsaussi pouvantatteindre48MeV.Lesystemedeproductiondelumieresecomposed'unonduleurplan dontl'emissionspontaneeestamplieegr^aceaunecaviteoptiqueresonnante. Lepresentrapportdecritlesdiagnosticsquiontetedeveloppes<strong>and</strong>ecaracteriserlesespacesde tronssontensuiteinjectesdansunaccelerateurlineaireouilssontacceleresjusqu'auneenergie d'electronsestbaseesurl'eetphotoelectrique.Cettesourcepeutproduiredespaquetsd'electron<br />

possiblenousavonstentedecomparerlesresultatsdenosmesuresavecdessimulationsnumeriques. fortementcharges(60pC)ultra-court(1ps),ayantuneenergiedel'ordrede10MeV.Ceselec-<br />

Mots-Clefs:Dynamiquedefaisceaud'electrons,Espacedephase,Emittance,Faisceaud'electrons afortebrillance,Laseraelectronslibres,Mesuredelalongueurdepaquetsd'electrons,Rayonnementcoherent,Rayonnementdetransitionoptique. |||||{

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