Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 1 LCLS Undulator Diagnostics and Comissioning Workshop John N. Galayda, Stanford Linear Accelerator Center 19 January 2004 Challenges of Commissioning the FEL Alignment Undulator K Undulator Damage Undulator Diagnostics CommissioningOperationCharge Challenges of Commissioning the FEL Alignment Undulator K Undulator Damage Undulator Diagnostics CommissioningOperationCharge

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 2 The World’s First Hard X-ray Laser Introduction

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 3 Near Hall Far Hall FEL Center

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 4 Conventional Construction Transport Undulator Near Hall Tunnel Far Hall 3 Beams/mirror FEL Center Lab/Office Expansion Transport Undulator Near Hall Tunnel Far Hall 3 Beams/mirror FEL Center Lab/Office Expansion Room for Spontaneous source or soft XRFEL in RSY Additional undulator in LCLS tunnel 8 or more additional undulator lines

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 5 Conventional Construction TransportUndulator Near Hall Tunnel Far Hall 3 Beams/mirror FEL Center Lab/Office TransportUndulator Near Hall Tunnel Far Hall 3 Beams/mirror FEL Center Lab/Office What are cost implications of moving beam dump and near hall backward, placing the Near Hall ground floor underneath the FEL Center? What are the cost implications of moving the Far Hall further east? How do the dimensions of the Far Hall affect cost? 50m >288m ?

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 6 Estimated Cost, Schedule $220M-$260M Total Estimated Cost range $265M-$315M Total Project Cost range Schedule: FY2003 Authorization to begin engineering design Emphasis on injector and undulator FY2005 Long-lead purchases for injector, undulator FY2006 Construction begins January 2007 Injector tests begin October 2007 FEL tests begin September 2008 Construction complete $220M-$260M Total Estimated Cost range $265M-$315M Total Project Cost range Schedule: FY2003 Authorization to begin engineering design Emphasis on injector and undulator FY2005 Long-lead purchases for injector, undulator FY2006 Construction begins January 2007 Injector tests begin October 2007 FEL tests begin September 2008 Construction complete Readiness

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 7 Challenges for Diagnostics in the Undulator Channel Tolerances on Trajectory are Tight for SASE at 1.5Å Beam-based alignment, RFBPMs must deliver a good trajectory Tolerance on K of an undulator is around 1.5 x Equivalent to 50 micron vertical misplacement This displacement does little to the electron optics This displacement does little to the spontaneous spectrum of 1 und. Piezo end tuners provide adjustment equivalent to K~ 4x10 -4 Radiation Damage to Undulators is a Concern Interlocks will be implemented but tolerable losses are low Can the diagnostics identify a damaged undulator? Tolerances on Trajectory are Tight for SASE at 1.5Å Beam-based alignment, RFBPMs must deliver a good trajectory Tolerance on K of an undulator is around 1.5 x Equivalent to 50 micron vertical misplacement This displacement does little to the electron optics This displacement does little to the spontaneous spectrum of 1 und. Piezo end tuners provide adjustment equivalent to K~ 4x10 -4 Radiation Damage to Undulators is a Concern Interlocks will be implemented but tolerable losses are low Can the diagnostics identify a damaged undulator?

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 8 Will the Undulator Diagnostics Serve Commissioning and Operations Needs for the LCLS? Charge – Will the Undulator Diagnostics Serve Commissioning and Operations Needs for the LCLS? Commissioning Can diagnostics be used to troubleshoot the new hardware? Can diagnostics be used to guide path to saturation? Operations Will the diagnostics permit simple and speedy troubleshooting? Reliability/Availability goals of the LCLS will be those of a light source Light diagnostics are crucial Can the diagnostics survive at high power? If not, are we placing too heavy a reliance on data taken with low charge? What are the alternatives? Variable gap? Rollaway undulators? Do we have redundant diagnostics capability where appropriate? Diagnostics that check the diagnostics Commissioning Can diagnostics be used to troubleshoot the new hardware? Can diagnostics be used to guide path to saturation? Operations Will the diagnostics permit simple and speedy troubleshooting? Reliability/Availability goals of the LCLS will be those of a light source Light diagnostics are crucial Can the diagnostics survive at high power? If not, are we placing too heavy a reliance on data taken with low charge? What are the alternatives? Variable gap? Rollaway undulators? Do we have redundant diagnostics capability where appropriate? Diagnostics that check the diagnostics

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 9 Point of No Return

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 10 End of Presentation

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC FY2008FY2009 Preliminary Schedule Construction Operation Design FY2001FY2002FY2003FY2004FY2005FY2006FY2007 CD-1 CD-2a CD-2b CD-3a CD-3b Critical Decision 0 – Mission NeedJune 13, 2001 Critical Decision 1 – Preliminary Baseline Range October 16, 2002 Start Project Engineering DesignOctober 2002 Critical Decision 2a – Long-Lead Procurement BudgetJune 2003 Critical Decision 2b – Performance BaselineApril 2004 Critical Decision 3a – Start Long-Lead ProcurementsAugust 2004 Fund Long-Lead ProcurementsOctober 2004 Critical Decision 3b – Start ConstructionAugust 2005 Fund ConstructionOctober 2005 Construction Complete End of FY2008 CD-0 Title I Design Complete

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 12 Final Focus Test Beam Extension Hall A Tunnel Hall B Damage Power density WavelengthObliquity Final Focus Test Beam Extension Hall A Tunnel Hall B Damage Power density WavelengthObliquity Simultaneous Delivery of Beam to 3 Endstations

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 13 Key Considerations for Conventional Facilities Design Shielding Enclosure, Vehicle Access in Research Yard Vibration Stability Location of Far Hall, Elevation at Far Hall Site Potential for Expansion, Additional Undulators Shielding Enclosure, Vehicle Access in Research Yard Vibration Stability Location of Far Hall, Elevation at Far Hall Site Potential for Expansion, Additional Undulators

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 14 No Anticipated Change in Requirements for: Research Yard Overpass Undulator Hall (exc. length) X-ray Tunnel (exc. length) Research Yard Overpass Undulator Hall (exc. length) X-ray Tunnel (exc. length)

Opening Comments and Charge 19 January 2004 Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Undulator Diagnostics Workshop John N. Galayda, SLAC 15 Linac Coherent Light Source Project Description SLAC Linac Two Chicanes for bunch compression FFTB Tunnel Undulator Hall Near Hall Far Hall FEL Center