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

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Reflected Laser Beam Anode Plate Figure2.12:Simpliedschematicoftheelectronsource:A527nmlaserbeamthatcanbemodulatedbytwoelectro-opticscell(EO1andEO2)andattenuatedbyarotationalpolarizerilluminates Solenoidal Lens Photocathode Insulating Ceramics theGaAsphotocathode.Ejectedphoto-electronsareacceleratedthroughtotheacceleratingvoltage ofnominally350kVbetweenthephotocathodeandtheanode. Incoming Laser Beam Tunnel Optical Room Transport System EO2 Attenuator EO1 Nd:YLF laser 01 01 01 01 01 01
Page 1 and 2: HighBrightnessElectronBeamDiagnosti
Page 3 and 4: eratedupto48MeVpriortothelasingsyst
Page 5 and 6: IthanktheCEBAFmachineoperators,with
Page 7 and 8: 3.4MeasurementoftheLongitudinalResp
Page 9 and 10: 5.6ZerophasingTechniqueforBunchLeng
Page 11 and 12: ListofTables 3.2Comparisonofcoecien
Page 13 and 14: ListofFigures 1.1Comparisonoftheexp
Page 15 and 16: 3.11Momentumcompactionandnonlinearm
Page 17 and 18: 4.18Overviewofthephasespacesampling
Page 19 and 20: 5.16Interferogrammeasuredfordierent
Page 21 and 22: 6.10Comparisonofthermstransversehor
Page 23 and 24: Chapter1 UVdomainandareplannedtogen
Page 25 and 26: space-chargeinthelowenergyregime,an
Page 27 and 28: !Vjitsthevelocity,and!Xjisthepositi
Page 29 and 30: equation boundarybetweenvacuumandam
Page 31 and 32: 10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
Page 33 and 34: 1.0 0.8 0.6 0.4 0.2 E=10 MeV E=42 M
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Page 39 and 40: Bu(rms)0.28T ParameterValueUnit Nu
Page 41: 2.7TheJeersonLabIRproject usedasexp
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Page 47 and 48: Horizontal Dispersion (m) Arc 1 ‘
Page 49 and 50: 3.3.2ExperimentalMethod Todetermine
Page 51 and 52: 5 4 3 2 Figure3.4:Exampleofcalibrat
Page 53 and 54: ∆ x (mm), Corrector 0F00H ∆ x (
Page 55 and 56: 2 1 Figure3.8:Comparisonbetweenanen
Page 57 and 58: Energy Spread (keV) After Accelerat
Page 59 and 60: latticecode9,wehave: MomentumCompac
Page 61 and 62: R 55 R 56 Drive Laser Phase Cavity
Page 63 and 64: Time of Flight out (RF-deg) Drive L
Page 65 and 66: φ OUT (RF−Deg) 5 0 −A− Nomin
Page 67 and 68: topreciselyextracttheT566termprobab
Page 69 and 70: 1 Trim Quad Off Meas (Quad On) in A
Page 71 and 72: Characterization TransversePhaseSpa
Page 73 and 74: istherenormalizedhorizontalmomentum
Page 75 and 76: severalsynchrotronradiationmonitors
Page 77 and 78: elation: willresult.Agivensurfaceof
Page 79 and 80: Maximum Average Beam Current ( A) 1
Page 81 and 82: Wire Scanner Readback (mV) 1200 100
Page 83 and 84: Table4.2:Surveyofmaterialscommercia
Page 85 and 86: Prjected Semi-Angle Energy (mrad Me
Page 87 and 88: ofP.Gueye,HamptonUniversity,VAUSA).
Page 89 and 90: densityprole,byactingontheotherthre
Page 91 and 92: Resolutionofbeamsizemeasurement Iti
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Finallyafterabitofalgebraonecancomp
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zero): Thesethreedeterminantsyieldt
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. . . . . . . . . . . . . . . . . .
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0.3 0.25 0.2 0.15 0.1 0.05 Emittanc
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σ x (mm) 1.5 Figure4.17:Anexampleo
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lengthandNthenumberofparticleswithi
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. . . . . . . . . . . . . . . . . .
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30 25 20 Figure4.21:Fractionofincid
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(sayonebunchlength),thetransversese
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6 550 500 4 450 2 400 4.6Summary 35
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2.0 1.8 10 -1 2 5 10 0 2 5 10 1 1.6
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theendofthemagneticdecompressorisbe
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TheAngularBFF ThesecondterminEqn.(2
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structureandlength.Alsowecannoticet
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transversebeamsizeeectleadstoanunde
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powermeasurement,yieldingthelossofp
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tectorconsistsofagas-lledcellenclos
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3 Crest Phase is −4 deg 2 lengtha
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Parabolic off-axis reflector ~ 300
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Inthexedlengtharm(2):thetransmitted
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Withr1=r+c(==cwhereisthemirrorsrela
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Reflection and Transmission Coeffic
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CaseInterferogramx (b) (d) (a) (c)
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as: measurementstationofoneelectron
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Slope(Mev/m)36.170633.741231.206727
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electronwithnoenergyoset=0,as: Ther
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5.8.1Conclusion Inthischapterwehave
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Golay Cell Output Signal (Volts) Go
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Average Left 1.5 Right 1.0 0.5 0.0
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driveraccelerator Figure5.21:Experi
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8.0 7.0 6.0 5.0 rophasingcavitiesFi
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500 450 400 350 300 250 200 150 100
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. . . . . . . . . . . . . . . . . .
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Solenoidal Lens #2 Accelerating Cav
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equationthatrequiresomeinitialcondi
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w.r.t.theRF-wave.Thisfactisaconsequ
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20 . . . . . . . . . . . . . . .. .
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15 200 15 180 (A) (B) 10 10 160 str
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Vertical axis (arbitrary units) 100
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4 2 thepickupcavityislocateddownstr
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4 2 0 R55patterngeneratedwithparmel
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σ z (mm) 0.2 0.1 Figure6.15:Variat
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0.000125 −0.000125 0.000125 Figur
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60 0.25 40 20 emittances~"x;y,andrm
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InthecaseofarigidlinechargewithaGau
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6.5.1EmittanceMeasurement Arstexper
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wetriedtoperformedthemeasurements.H
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undulatorvicinity.Wehavenotmanaged,
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[15]C.L.Bohn,S.Benson,G.Biallas,I.C
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[48]R.Lai,andA.J.Sievers,\Phaseprob
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Abbreviations AppendixA CCD:chargec
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AppendixB B.1LinearandSecondOrderTr
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B.3.1DIMAD TheprogramDIMAD2studiesp
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ofthelinechargeandtheobserverelectr
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AppendixC C.0.4Introduction BeamDis
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Unfortunatelylog[^S(!)]cannotbeexpr
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6 5 4 3 2 1 0 0 0.1 0.2 0.3 0.4 0.5
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High Brightness Electron Beam Diagnostics and their ... - CASA

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