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

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TheReductionoftheSpaceChargecondition: ory),theratioR0uaftertheslitswrites: Thenonoverlappingcondition: Thisconditionisdirectlydeducedfromratioofspacechargeterm<strong>and</strong>emittancecontribution intheK-Vequationsexposedpreviouslyinthisnote.Ifuistheconsidereddirection(u=x Theobservedpatterninthescreen,aswealreadyshow,consistsinpeaksassociatedtoeach slits.WemustinsureinchoosingthedriftlengthL<strong>and</strong>thatthepeaksdonotoverlap,i.e.: R0u=Ru 4uL
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HighBrightnessElectronBeamDiagnosti
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eratedupto48MeVpriortothelasingsyst
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IthanktheCEBAFmachineoperators,with
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3.4MeasurementoftheLongitudinalResp
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5.6ZerophasingTechniqueforBunchLeng
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ListofTables 3.2Comparisonofcoecien
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ListofFigures 1.1Comparisonoftheexp
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3.11Momentumcompactionandnonlinearm
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4.18Overviewofthephasespacesampling
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5.16Interferogrammeasuredfordierent
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6.10Comparisonofthermstransversehor
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Chapter1 UVdomainandareplannedtogen
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space-chargeinthelowenergyregime,an
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!Vjitsthevelocity,and!Xjisthepositi
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equation boundarybetweenvacuumandam
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10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
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1.0 0.8 0.6 0.4 0.2 E=10 MeV E=42 M
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00000000000000000000000000000000000
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harmonicwithproperchoiceoftheKvalue
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Bu(rms)0.28T ParameterValueUnit Nu
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2.7TheJeersonLabIRproject usedasexp
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Study TheFELdriveraccelerator:Latti
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ParameterValue x -0.178 x(m) 8.331
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Thepurposeofmeasuringthetransverser
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computedusingthelatticeset-upuseddu
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etatronexcitationaspicturedingure3.
Page 54 and 55: ∆ x (mm), Corrector 0F00H ∆ x (
Page 56 and 57: 1 0.5 0 spreadoftheparticlewassetto
Page 58 and 59: 2 1 −5 −3 −1 1 3 5 k (m q −
Page 60 and 61: Experimentallythecalibrationcoecien
Page 62 and 63: tioned.FromthetransferfunctioninFig
Page 64 and 65: Pickup Experiment #2 #3 #4 Simulati
Page 66 and 67: Fromthesebothmeasurementitispossibl
Page 68 and 69: . . . . . . . . . . . . . . . . . .
Page 70 and 71: 10 5 Sext. ON Figure3.20:Eectofthes
Page 72 and 73: spaceabeamthatconsistsofNparticles,
Page 74 and 75: Asforthegeometricemittanceonecanden
Page 76 and 77: (a) ceramic radiator beam x-wire be
Page 78 and 79: and validundertheassumptionofaunifo
Page 80 and 81: 1000 900 800 700 Figure4.4:Steadyst
Page 82 and 83: Fraction of Beam enclosed within (%
Page 84 and 85: 5 2 2 3 4 5 6 7 8 9 10 0 10 5 2 Foi
Page 86 and 87: Actuator Inserts Foil and Mirror CI
Page 88 and 89: shortterm,touseasbeamdensitymonitor
Page 90 and 91: Alongwiththeseimplementedoperations
Page 92 and 93: whereiistheerrorontheithbeamsizemea
Page 94 and 95: Let'sassumethethinlensapproximation
Page 96 and 97: obtainedviathestatisticalanalysis.T
Page 98 and 99: 20 18 16 . 14 . 12 . Figure4.14:Rel
Page 100 and 101: 100 10 −3 10 −2 10 −1 10 that
Page 102 and 103: multislits mask (copper) Aluminum F
Page 106 and 107: . . . . . . . . . . . . . . . . . .
Page 108 and 109: 30 25 20 Figure4.21:Fractionofincid
Page 110 and 111: (sayonebunchlength),thetransversese
Page 112 and 113: 6 550 500 4 450 2 400 4.6Summary 35
Page 114 and 115: 2.0 1.8 10 -1 2 5 10 0 2 5 10 1 1.6
Page 116 and 117: theendofthemagneticdecompressorisbe
Page 118 and 119: TheAngularBFF ThesecondterminEqn.(2
Page 120 and 121: structureandlength.Alsowecannoticet
Page 122 and 123: transversebeamsizeeectleadstoanunde
Page 124 and 125: powermeasurement,yieldingthelossofp
Page 126 and 127: tectorconsistsofagas-lledcellenclos
Page 128 and 129: 3 Crest Phase is −4 deg 2 lengtha
Page 130 and 131: Parabolic off-axis reflector ~ 300
Page 132 and 133: Inthexedlengtharm(2):thetransmitted
Page 134 and 135: Withr1=r+c(==cwhereisthemirrorsrela
Page 136 and 137: Reflection and Transmission Coeffic
Page 138 and 139: CaseInterferogramx (b) (d) (a) (c)
Page 140 and 141: as: measurementstationofoneelectron
Page 142 and 143: Slope(Mev/m)36.170633.741231.206727
Page 144 and 145: electronwithnoenergyoset=0,as: Ther
Page 146 and 147: 5.8.1Conclusion Inthischapterwehave
Page 148 and 149: Golay Cell Output Signal (Volts) Go
Page 150 and 151: Average Left 1.5 Right 1.0 0.5 0.0
Page 152 and 153: 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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