1. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne  LCLS Coordinate System  LTU Design Overview  Electron Beam Dump Design Overview  Design Risk  LCLS Coordinate System  LTU Design Overview  Electron Beam Dump Design Overview  Design Risk LTU & Electron Beam Dump Tim Montagne, LCLS Linac December 12, 2003

2. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LCLS Coordinate System The coordinate system will be defined in LCLS Technical Note LCLS-TN-03-8. The coordinate system is defined relative to the Linac coordinate system. The coordinate system will be defined in LCLS Technical Note LCLS-TN-03-8. The coordinate system is defined relative to the Linac coordinate system.

3. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne CD1 DL2 Becomes LTU CD1 DL2 to LTU Design Comparison The DL2 design was changed to allow expansion of LCLS into multiple beamlines. CD1 DL2 Design The CD1 DL2 design allowed for 2 beamlines, North and South. The original DL2 length was 65.5m. LTU Design The present LTU design allows for 5 beamlines. The LTU length is 293.3 m. CD1 DL2 to LTU Design Comparison The DL2 design was changed to allow expansion of LCLS into multiple beamlines. CD1 DL2 Design The CD1 DL2 design allowed for 2 beamlines, North and South. The original DL2 length was 65.5m. LTU Design The present LTU design allows for 5 beamlines. The LTU length is 293.3 m.

4. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Future Expansion with New Undulator Lines 113 UndulatorStart Future -2  line Future -2  º  line 2 nd FEL Line North Future +2 line Future +2 º line Future + 4 Soft X-ray Line Future + 4 º Soft X-ray Line spont. und. ~1.5º 1 st FEL Line South research yard (FFTB) 4 m

5. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Design Overview LTU Design Layout The LTU beamline device layout is generated automatically using MAD deck coordinates. Beamline Devices Known device models are used for defined assemblies. Placeholder objects are used for undefined designs. LTU Design Layout The LTU beamline device layout is generated automatically using MAD deck coordinates. Beamline Devices Known device models are used for defined assemblies. Placeholder objects are used for undefined designs.

6. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Design Overview – Magnet Support Concept LTU Magnet Support The quadrupole and X-Y corrector pair are mounted on a high stiffness modular support weldment. LTU Magnet Support The quadrupole and X-Y corrector pair are mounted on a high stiffness modular support weldment.

7. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Design Overview – Magnet Support Concept LTU Magnet Support The quadrupole and X-Y corrector pair are mounted on a high stiffness modular support weldment. LTU Magnet Support The quadrupole and X-Y corrector pair are mounted on a high stiffness modular support weldment. Support Installation Each support pad will be installed and aligned prior to support installation. This arrangement was used in PEP- II and Spear 3. Support Installation Each support pad will be installed and aligned prior to support installation. This arrangement was used in PEP- II and Spear 3.

8. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Vacuum System Design Vacuum System Design Optimized conductance. Drift tubes <16 RMS finish. Drift tube material high electrical conductivity. Vacuum sector length optimized for short pumpdown time during service. Vacuum System Design Optimized conductance. Drift tubes <16 RMS finish. Drift tube material high electrical conductivity. Vacuum sector length optimized for short pumpdown time during service.

9. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne LTU Device Summary 37x.91Q17.72 quadrupole magnet 4x 4D102.36 dipole magnet 22x X corrector magnet 22x Y corrector magnet 2x Y bend magnet (transition BSY to LTU) 38x stripline type BPM 8x RF BPM 3x X collimator 3x Y collimator 2x Energy Collimator 37x.91Q17.72 quadrupole magnet 4x 4D102.36 dipole magnet 22x X corrector magnet 22x Y corrector magnet 2x Y bend magnet (transition BSY to LTU) 38x stripline type BPM 8x RF BPM 3x X collimator 3x Y collimator 2x Energy Collimator 3x Bunch length monitor 1x Single beam kicker magnet and dump 4x Wire scanner 3x Toroid 1x CSR Bunch Length Monitor 1x OTR Bunch Length Monitor 2x OTR Profile Monitor 3x Bunch length monitor 1x Single beam kicker magnet and dump 4x Wire scanner 3x Toroid 1x CSR Bunch Length Monitor 1x OTR Bunch Length Monitor 2x OTR Profile Monitor

10. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne Electron Beam Dump Design Overview Electron Beam Dump Design The dump layout is automatically positioned using MAD deck coordinates. Radiation Physics The beam dump design is in review by radiation physics. Electron Beam Dump Design The dump layout is automatically positioned using MAD deck coordinates. Radiation Physics The beam dump design is in review by radiation physics. Beam Dump Dipole Bend Magnet Safety Bend Magnet Electron Beam X-Ray Line

11. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne Electron Beam Dump Device Summary 1x 4D102.36 dipoles 2x Stripline type BPM 3x.91Q17.72 quadrupoles 2x X collimator 3x Y collimator 2x Y safety Y bend magnet 1x Profile monitor 4x Y bend magnet 1x Beam dump 1x 4D102.36 dipoles 2x Stripline type BPM 3x.91Q17.72 quadrupoles 2x X collimator 3x Y collimator 2x Y safety Y bend magnet 1x Profile monitor 4x Y bend magnet 1x Beam dump

12. LTU & Electron Beam Dump Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Technical Design ReviewDecember 2003 Tim Montagne Design Risk Low Risk Designs Quadrupole Magnets Dipole Magnets Corrector Magnets BPMsToroidsCollimators Tune up Dumps Alignment Stages Supporting Structures Vacuum System Low Risk Designs Quadrupole Magnets Dipole Magnets Corrector Magnets BPMsToroidsCollimators Tune up Dumps Alignment Stages Supporting Structures Vacuum System Medium Risk Designs Polished, High Electrical Conductivity Vacuum Chambers Wire Scanners OTR Profile Monitor High Risk Designs Electro-Optical Bunch Length monitor CSR Bunch Length Monitor OTR Bunch Length Monitor RF BPM Medium Risk Designs Polished, High Electrical Conductivity Vacuum Chambers Wire Scanners OTR Profile Monitor High Risk Designs Electro-Optical Bunch Length monitor CSR Bunch Length Monitor OTR Bunch Length Monitor RF BPM