LCLS Conceptual Design Report - Stanford Synchrotron Radiation ...

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L C L S C O N C E P T U A L D E S I G N R E P O R T demonstrated by studying the new machine parameters required over a wide range of bunch charge values. The injector’s beam emittance and bunch length is first estimated by applying scaling laws derived for a 1.6-cell S-band rf photo-cathode gun [14]: ε N [ µ m] ≈1.45⋅ 0.38⋅ Q[ nC] + 0.095⋅ Q[ nC] + 0.22⋅Q[ nC] σ z 0 4/3 8/3 2/3 [ mm] ≈ 0. 83 ⋅Q [ nC] 1/3 (7.10) Here Q is the bunch charge (nC), εN is the normalized rms emittance (µm), and σz 0 is the initial rms electron bunch length (mm) after the gun. The last term in the emittance relation represents a thermal emittance, which scales with the laser spot radius on the cathode. The bunch length scaling constant has been increased here (0.63 mm in reference [14] becomes 0.83 mm), to a less challenging level, in order to be consistent with the 1-nC nominal design described above. The peak current required for SASE saturation at ~87 m, is given approximately by (see Chapter 5) 3 2 I pk[A] ≈233⋅ εN + 1343⋅ εN + 834 ⋅ εN + 63 , (7.11) where the slice energy spread is assumed to be
L C L S C O N C E P T U A L D E S I G N R E P O R T Table 7.7 Machine parameters for six different values of bunch charge and constant saturation length. The final projected relative energy spread is
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Linac Coherent Light Source (LCLS)
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L C L S C O N C E P T U A L D E S I
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Preface This Conceptual Design Repo
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Table of Contents 1 Executive Summa
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6. Two experiment halls L C L S C O
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2.7.1.7 Conventional Facilities L C
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3 TECHNICAL SYNOPSIS Scientific Bas
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5 TECHNICAL SYNOPSIS FEL Parameters
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and the total peak beam power L C L
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5.4.2.2 Case II - High Charge Limit
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∆P ∆I sat pl / P / I sat pk L C
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5.9 Summary L C L S C O N C E P T U
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6 Injector TECHNICAL SYNOPSIS The i
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εn,x (µm) 4 3 2 1 4-2001 8560A95
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Quantum Yield (electrons/photon) 10
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Bz (T) 0.3 0.2 0.1 1-2002 8560A92 L
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Master Clock 9.917 MHz x8 x6 x6 Df
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Page 165 and 166: B z (kG) 3 2 1 4-2001 8560A91 L C L
Page 169 and 170: γε x,y (µm) 3 2 1 0 3-2001 8560A
Page 171 and 172: γεx,y (µm) yn 10 0 -10 -10 0 10
Page 173 and 174: σ γ /γ 0 (percent) ∆N/N 0.02 0
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Page 177 and 178: Table 6.5 PARMELA Output Parameters
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Page 181 and 182: ∆E/E 0 (%) ∆N/N 0 -1 -2 0.02 0
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Page 204 and 205: 〈∆E/E 0 〉 /% I pk /I pk0 0.1
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Phase [deg. S-band] L C L S C O N C
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New Solid-State Sub-Booster and Ele
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7.8.2 Bunch Length Diagnostics L C
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Magnet String Location Existing, Ne
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8.1 Overview 8.1.1 Introduction L C
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Mu in the pole, for mu
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Gasload (Torr-l/sec-cm) (x10 -12 )
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8.10.4 Conclusion L C L S C O N C E
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x θ j > 0 L C L S C O N C E P T U
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Quad ∆X/µm Quad ∆Y/µm −500
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∆X/µm ∆Y/µm L C L S C O N C E
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8.13.2 Undulator Cell Structure L C
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9.2 Layout and Optics 9.2.1 Experim
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Fast Valve L C L S C O N C E P T U
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0.01 10 -4 10 -6 10 -8 10 -10 10 -1
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Table 9.5 Mirror requirements L C L
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Refractive Focusing System L C L S
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Pulse Split/Delay L C L S C O N C E
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Figure 9.20 LCLS Ion Chamber L C L
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9.4.3.2 Pulse Length L C L S C O N
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9.4.3.6 Divergence L C L S C O N C
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10 Conventional Facilities TECHNICA
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1-2002 8560A198 Linac Center Line L
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Figure 10.6 Near hall floor plan 10
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11 Controls TECHNICAL SYNOPSIS The
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11.5.3 Motion Controls L C L S C O
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12.1 Procedural Overview L C L S C
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13 Environment, Safety and Health a
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Table 13-1 Hazard Identification an
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13.1 Ionizing Radiation The design
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Table 13-2 Minimum Training Require
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13.10 SLAC References L C L S C O N
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L C L S D E S I G N S T U D Y R E P
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15 TECHNICAL SYNOPSIS Work Breakdow
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A A.1 FEL-Physics A.1.1 Performance
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A.2 Photo-Injector A.2.1 Gun-Laser
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A.2.3.2 Electron Beam L C L S C O N
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A.2.4.7 Vacuum L C L S C O N C E P
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A.3.8 DL-2 A.3.8.1 Subsystem L C L
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A.4 Undulator A.4.1 Undulator A.4.1
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B Control Points B.1 Injector Contr
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C Glossary ACO Anneaux Collisions O
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