BESAC 20 October 2003 BESAC 20 October 2003 John N. Galayda, SLAC John N. Galayda, SLAC LCLS Overview LCLS Overview [email protected][email protected]Linac Coherent Light Source Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center LCLS Update John N. Galayda, SLAC October 20, 2003 Since the April 2002 Review Since the April 2002 Review Construction Schedule, Funding Guidance Construction Schedule, Funding Guidance CD-1 CD-1 Basic Energy Sciences 20-Year Roadmap Basic Energy Sciences 20-Year Roadmap Start of Project Engineering Design Start of Project Engineering Design May 2003 Review May 2003 Review What’’s Next What’’s Next
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LCLS Update John N. Galayda, SLAC October 20, 2003
LCLS Update John N. Galayda, SLAC October 20, 2003. Since the April 2002 Review Construction Schedule, Funding Guidance CD-1 Basic Energy Sciences 20-Year Roadmap Start of Project Engineering Design May 2003 Review What’’s Next. The World’s First Hard X-ray Laser. Capabilities. - PowerPoint PPT Presentation
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BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS UpdateJohn N. Galayda, SLAC
October 20, 2003
LCLS UpdateJohn N. Galayda, SLAC
October 20, 2003
Since the April 2002 ReviewSince the April 2002 Review Construction Schedule, Funding GuidanceConstruction Schedule, Funding Guidance CD-1CD-1 Basic Energy Sciences 20-Year RoadmapBasic Energy Sciences 20-Year Roadmap
Start of Project Engineering DesignStart of Project Engineering Design May 2003 ReviewMay 2003 Review What’’s NextWhat’’s Next
Since the April 2002 ReviewSince the April 2002 Review Construction Schedule, Funding GuidanceConstruction Schedule, Funding Guidance CD-1CD-1 Basic Energy Sciences 20-Year RoadmapBasic Energy Sciences 20-Year Roadmap
Start of Project Engineering DesignStart of Project Engineering Design May 2003 ReviewMay 2003 Review What’’s NextWhat’’s Next
BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Review ConclusionsReview Conclusions
Green LightGreen Light for approval of CD-2A in June 2003 for approval of CD-2A in June 2003This allows DOE-BES to include $30M in FY2005 budget requestThis allows DOE-BES to include $30M in FY2005 budget request
Next DOE review March 2004Next DOE review March 2004Formal quantitative risk assessment/management systemFormal quantitative risk assessment/management system
Settle the baseline (scope, schedule, cost) for the entire projectSettle the baseline (scope, schedule, cost) for the entire project
Several recommendations for R&DSeveral recommendations for R&D22ndnd undulator prototype – alternative strongback material? undulator prototype – alternative strongback material?
Undulator vacuum chamberUndulator vacuum chamber
Electron beam diagnosticsElectron beam diagnostics
X-ray diagnosticsX-ray diagnostics
Green LightGreen Light for approval of CD-2A in June 2003 for approval of CD-2A in June 2003This allows DOE-BES to include $30M in FY2005 budget requestThis allows DOE-BES to include $30M in FY2005 budget request
Next DOE review March 2004Next DOE review March 2004Formal quantitative risk assessment/management systemFormal quantitative risk assessment/management system
Settle the baseline (scope, schedule, cost) for the entire projectSettle the baseline (scope, schedule, cost) for the entire project
Several recommendations for R&DSeveral recommendations for R&D22ndnd undulator prototype – alternative strongback material? undulator prototype – alternative strongback material?
Undulator vacuum chamberUndulator vacuum chamber
Electron beam diagnosticsElectron beam diagnostics
X-ray diagnosticsX-ray diagnostics
BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
SummarySummarySummarySummary
2-3 fs FWHM x-ray pulse length possible in 2-3 fs FWHM x-ray pulse length possible in LCLSLCLS with baseline design + simple foilwith baseline design + simple foil
Photons per pulse reduced (10Photons per pulse reduced (101212 → 10→ 101010))
Pulse length adjustable with stepper motorPulse length adjustable with stepper motor
Precisely spaced double pulses availablePrecisely spaced double pulses available
<1 fs should be possible with modified <1 fs should be possible with modified compression parameters and further study compression parameters and further study → → single coherent spike!single coherent spike!
2-3 fs FWHM x-ray pulse length possible in 2-3 fs FWHM x-ray pulse length possible in LCLSLCLS with baseline design + simple foilwith baseline design + simple foil
Photons per pulse reduced (10Photons per pulse reduced (101212 → 10→ 101010))
Pulse length adjustable with stepper motorPulse length adjustable with stepper motor
Precisely spaced double pulses availablePrecisely spaced double pulses available
<1 fs should be possible with modified <1 fs should be possible with modified compression parameters and further study compression parameters and further study → → single coherent spike!single coherent spike!
BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
The SLAC Linac as an FEL DriverThe SLAC Linac as an FEL Driver
LCLS 4.5-14.3 GeVLCLS 4.5-14.3 GeV 120 Hz.120 Hz.
PossibilitiesPossibilities50 GeV beam energy – XFEL at 100 keV?50 GeV beam energy – XFEL at 100 keV?
Requires extremely high quality electron beamRequires extremely high quality electron beam
Pulse to pulse energy variation at 120 Hz.Pulse to pulse energy variation at 120 Hz.Small steps for FEL wavelength tunabilitySmall steps for FEL wavelength tunability
Large steps for multi-wavelength multi-Large steps for multi-wavelength multi-undulator operationsundulator operations
300 ns macro pulse with up to 32 micro 300 ns macro pulse with up to 32 micro pulsespulses
LCLS 4.5-14.3 GeVLCLS 4.5-14.3 GeV 120 Hz.120 Hz.
PossibilitiesPossibilities50 GeV beam energy – XFEL at 100 keV?50 GeV beam energy – XFEL at 100 keV?
Requires extremely high quality electron beamRequires extremely high quality electron beam
Pulse to pulse energy variation at 120 Hz.Pulse to pulse energy variation at 120 Hz.Small steps for FEL wavelength tunabilitySmall steps for FEL wavelength tunability
Large steps for multi-wavelength multi-Large steps for multi-wavelength multi-undulator operationsundulator operations
300 ns macro pulse with up to 32 micro 300 ns macro pulse with up to 32 micro pulsespulses
BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
SLAC commitmentSLAC commitment
Statement from the SLAC Director
“The LCLS and its expansion are critical ingredients in the broad scientific portfolio of the SLAC site for the coming decades. I encourage the LCLS team to consider the unique possibilities that the full capabilities and flexibility of the SLAC linac, including electron beams up to 50 GeV, will offer. Further, I encourage them to integrate these possibilities into the plans for the expansion of LCLS beyond its baseline operating parameters.”
“SLAC and its talented staff of accelerator physicists and engineers routinely operate the linac in a multi-user mode with high operational efficiency. For example, the linac currently serves to inject the B-factory in parallel with fixed target high energy physics experiments and accelerator R&D. We expect that such operational flexibility will enable the linac, with suitable modifications, to serve the needs of an expanded LCLS well into the future.”
BESAC 20 October 2003BESAC 20 October 2003 John N. Galayda, SLACJohn N. Galayda, SLAC
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Probing the rocking curve Probing the rocking curve 18 steps: 18 steps: =-1.0° to =-1.0° to =+0.4°=+0.4°Single exposuresSingle exposuresgated CCD, 62 msgated CCD, 62 ms
Probing the rocking curve Probing the rocking curve 18 steps: 18 steps: =-1.0° to =-1.0° to =+0.4°=+0.4°Single exposuresSingle exposuresgated CCD, 62 msgated CCD, 62 ms