LCLS Conceptual Design Report - Stanford Synchrotron Radiation ...

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1-2002 8560A198 Linac Center Line 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 Laser and Optical Diagnostics Penetration Scale: 5 meters Cathode Load Lock RF Gun Section Sector 20-8A L0 Accelerators Gun Solenoid, S1 Optical Table Linac Solenoid, S2 L0-1 Figure 10.1 Layout of the injector tunnel 3' Door 1-2002 8560A99 10' Sliding Door Sector 20-8B L0-2 Matching Section Sector 20-8C Light Transport Channel Diagnostic (laser & e – beam) 10' Material Shaft Stair Well Clean Room 12' Clean Room LCLS Injector Quadrupole, typ. RF Deflector Concrete Steel Beam Stopper Compressor Entry Door 3' Door Racks 3' Pulse Stretcher/ Shaper Oscillator Figure 10.2 Layout of the injector support building PENL 20-14 UV & Diagnostic Beam Generation 6' Door Amplifiers Emittance Wire Scanners Spectrometer Dipole Energy Wire Scanner & OTR Injector Bend Sector 21-1B Injector Beam Dump C O N V E N T I O N A L F A C I L I T I E S♦ 10-3
10.2 Linac Housing 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 The LCLS uses the last 1 km of the existing linac, from sector 20 through sector 30. The existing utilities will be adequate for the new operation. In two sectors, sector 20 and sector 25, sections of the linac will be removed and replaced with magnets and vacuum chambers for electron beam pulse compression. Rearrangement of some low conductivity water and electrical power distribution will be required at these locations but the total capacity is adequate for the new requirements. The costs for these changes are included with the linac costs. A new x-band accelerating structure will be added at sector 20. This will require a new modulator and klystron in the gallery. This new installation will require power and water connections. 10.3 Undulator Hall The Undulator Hall will house the electron beam dogleg, the undulator and the electron beam dump. The upstream end of this tunnel is underground and in line with the linac. The downstream part is constructed in the Research Yard from shielding blocks. Prior to the construction of the LCLS, this hall houses the technical equipment associated with the FFTB. This equipment will be removed to make room for the LCLS equipment, primarily the undulator. The piers in the tunnel and the general soil stability were characterized during the earlier operation of the FFTB. Stability was important to the FFTB operation and the existing piers in the tunnel were constructed to tight stability specifications. The LCLS undulator requires exceptional mechanical and environmental stability. New stable supports will be installed in the tunnel for the undulator. The air handling in the tunnel will be improved to reduce the tunnel temperature variation. The utilities required in the tunnel for the LCLS are more modest that those required during FFTB operation. The energy is lower, 16 GeV vs. 50 GeV, and the undulator uses permanent magnets. No new utility resources are required but new plumbing, wiring, cable trays, etc. will be required. The costs for these elements are included in the Linac and Undulator sections. 10.4 Experimental Halls The LCLS requires two experimental halls, one 40 meters downstream of the end of the undulator and the other 322 meters downstream of the end of the undulator (see Figure 10.3). A tunnel for the beam line, utilities and access connects the halls. 10-4 ♦ C O N V E N T I O N A L F A C I L I T I E S
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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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1-2002 8560A198 Linac Center Line L
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B z (kG) 3 2 1 4-2001 8560A91 L C L
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γε x,y (µm) 3 2 1 0 3-2001 8560A
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γεx,y (µm) yn 10 0 -10 -10 0 10
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σ γ /γ 0 (percent) ∆N/N 0.02 0
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5 0 -5 5 0 -5 5 0 -5 L C L S C O N
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Table 6.5 PARMELA Output Parameters
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gama x (micro.m) 3 2 1 0 0 L C L S
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∆E/E 0 (%) ∆N/N 0 -1 -2 0.02 0
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〈∆E/E 0 〉 /% I pk /I pk0 0.1
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β (m) 35 30 25 20 15 10 5 0 K21_1B
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β (m) 60 50 40 30 20 10 0 L C L S
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economic reasons. L C L S C O N C E
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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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Page 392 and 393: 8.13.2 Undulator Cell Structure L C
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Page 418 and 419: Table 9.5 Mirror requirements L C L
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Page 430 and 431: Figure 9.20 LCLS Ion Chamber L C L
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Page 462 and 463: 12.1 Procedural Overview L C L S C
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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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