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SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source1
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
The Linac Coherent Light Source (LCLS)John N. Galayda, Stanford Linear Accelerator Center
15 October 2002
The Linac Coherent Light Source (LCLS)John N. Galayda, Stanford Linear Accelerator Center
15 October 2002
What will it doWhat will it do
The ProjectThe Project
ResearchResearch
User ProgramUser Program
What will it doWhat will it do
The ProjectThe Project
ResearchResearch
User ProgramUser Program
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source2
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
What Will It DoWhat Will It Do
The world’s The world’s first first hard x-ray laser hard x-ray laser
Unprecedented brightness, Unprecedented Unprecedented brightness, Unprecedented time resolutiontime resolution
0.8 – 8 keV SASE Free Electron Laser0.8 – 8 keV SASE Free Electron Laser
Electron beam 4.5 – 14.35 GeV, from SLAC LinacElectron beam 4.5 – 14.35 GeV, from SLAC Linac
Peak power in SASE bandwidth 8 GWPeak power in SASE bandwidth 8 GW
Peak brightness 10Peak brightness 103333 photons/(mm photons/(mm22 mr mr22 0.1%BW) 0.1%BW)
Pulse duration Pulse duration 230 femtoseconds 230 femtoseconds
Pulse repetition rate 120 HzPulse repetition rate 120 Hz
The world’s The world’s first first hard x-ray laser hard x-ray laser
Unprecedented brightness, Unprecedented Unprecedented brightness, Unprecedented time resolutiontime resolution
0.8 – 8 keV SASE Free Electron Laser0.8 – 8 keV SASE Free Electron Laser
Electron beam 4.5 – 14.35 GeV, from SLAC LinacElectron beam 4.5 – 14.35 GeV, from SLAC Linac
Peak power in SASE bandwidth 8 GWPeak power in SASE bandwidth 8 GW
Peak brightness 10Peak brightness 103333 photons/(mm photons/(mm22 mr mr22 0.1%BW) 0.1%BW)
Pulse duration Pulse duration 230 femtoseconds 230 femtoseconds
Pulse repetition rate 120 HzPulse repetition rate 120 Hz
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source3
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source4
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Femtochemistry
Nanoscale Dynamics in Condensed matter
Atomic Physics
Plasma and Warm Dense Matter
Structural Studies on SingleParticles and Biomolecules
FEL Science/Technology
Program developed by international team of ~45 scientists working with accelerator and laser physics communities
Aluminum plasma
10-4 10-2 1102 10 4
classical plasma
dense plasma
high density matter
G =1
Density (g/cm-3)
G =10
G =100
t=0
t=
“the beginning.... not the end”
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source5
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Lasers probe charge dynamics
• Electron Diffraction limited to ps range• LCLS will probe 200 10 fs range
• Chemical dynamics happens in fs - ps range
H2OOH + H
about 10 fs
time depends on mass
CH2I2CH2I + I
about 100 fs
FemtochemistryFemtochemistry
Requirements: High peak brightness230 fsec or shorter pulse 0.8 - 8 keV x-raysSynchronization to laser
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source6
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Nanoscale Dynamics inNanoscale Dynamics in Condensed matterCondensed matter
t=0
t=
In picoseconds - milliseconds range
sample
splitter
variable delay t
Analyze contrastas f(delay time)
Requirements: Maximum transverse coherence
230 fsec pulse
<8-24 keV x-rays (3rd harmonic)
Fast Array detectors
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source7
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Formation of Hollow Atoms:
h900eVAuger
=2.5fs
Multiphoton Ionization:
h
h
Giant Coulomb explosions of Xe clusters
109 atoms
h950eV
Auger
=0.1fs3p (M3)
Xe
Understanding is central to the
imaging of biomolecules
Atomic PhysicsAtomic Physics
Requirements: High peak brightness230 fsec pulse <1 keV x-raysSynchronization to fast detectors
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source8
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
• Creating Warm Dense Matter• Generate ≤10 eV solid density matter• Measure the fundamental nature of the matter via equation of state
• Probing resonances in HDM• Measure kinetics process, redistribution rates, kinetic models• All time scales
Plasma Physics and Warm Dense Matter
Requirements: High peak power for plasma creation230 fsec pulse or less<8 keV x-raysSynchronization to external laser
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source9
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Structural Studies on Single Particles andBiomolecules
Requirements: High peak brightness
High photon density
230 fs or shorter pulses
Fast array detectors
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source10
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Puls e dura tion (FWHM) 10 fs 50 fs 100 fs 230 fs
Phot ons/pu lse (100 nm spot)(R = 15%)
5x1012 8x1011 3x1011 5x1010
Sing le lyso zyme molec uleMW: 19,806
26 Å 30 Å >30 Å >30 Å
3x3x3 cl uster of lyso zymesTotal MW: 535,000
<2.0 Å 3.0 Å 6.5 Å 12 Å
Sing le RUBISCO molec uleMW: 562,000
2.6 Å 4.0 Å 20 Å 30 Å
Sing le viral capsid (TBSV)MW: ~3,000,000
<2.0 Å <2.0 Å <2.0 Å 2.4 Å
Larger protein assemblies and viruses look promising
Calculated Limits of Resolution with Relectronic = 15 %
Structural Studies on Single Particles andBiomolecules
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source11
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
52 m52 m43 m43 m
ee
30 m30 m
SiSi monochromator monochromator((TT = 40%) = 40%)
230 fs 10 fs
•Electron pulse compression•X-ray pulse compression•Preservation of time structure•Coherence preservation•X-ray FEL diagnostics•Pump/probe synchronization
Two-Stage Chirped-Beam SASE-FEL for High Power Femtosecond X-Ray Pulse Generation
C. Schroeder*, J. Arthur^, P. Emma^,S. Reiche*, and C. Pellegrini*
^ Stanford Linear Accelerator Center*UCLA
FEL Physics and TechnologyFEL Physics and TechnologyX-ray FEL PhysicsX-ray FEL Physics
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source12
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Estimated Cost, ScheduleEstimated Cost, Schedule
$200M-$240M Total Estimated Cost $200M-$240M Total Estimated Cost rangerange
$245M-$295M Total Project Cost range$245M-$295M Total Project Cost range
Schedule:Schedule:FY2003FY2003 Authorization to begin engineering design Authorization to begin engineering design
Emphasis on injector and undulatorEmphasis on injector and undulator
FY2005 FY2005 Long-lead purchases for injector, undulatorLong-lead purchases for injector, undulator
FY2006 Construction beginsFY2006 Construction begins
January 2007 January 2007 Injector tests beginInjector tests begin
October 2007October 2007 FEL tests beginFEL tests begin
September 2008 September 2008 Construction completeConstruction complete
$200M-$240M Total Estimated Cost $200M-$240M Total Estimated Cost rangerange
$245M-$295M Total Project Cost range$245M-$295M Total Project Cost range
Schedule:Schedule:FY2003FY2003 Authorization to begin engineering design Authorization to begin engineering design
Emphasis on injector and undulatorEmphasis on injector and undulator
FY2005 FY2005 Long-lead purchases for injector, undulatorLong-lead purchases for injector, undulator
FY2006 Construction beginsFY2006 Construction begins
January 2007 January 2007 Injector tests beginInjector tests begin
October 2007October 2007 FEL tests beginFEL tests begin
September 2008 September 2008 Construction completeConstruction complete
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source13
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
2002 2003 2004 2005 2006 FY2008 FY2009
Preliminary SchedulePreliminary Schedule
ConstructionConstruction OperatioOperationn
DesignDesignFY2001 FY2002 FY2003 FY2004 FY2005 FY2006 FY2007
CD-1
CD-2a
CD-2b
CD-3a
CD-3b
Critical Decision 0 – Mission Need June 13, 2001Critical Decision 1 – Preliminary Baseline Range September 2002Start Project Engineering Design October 2002Critical Decision 2a – Long-Lead Procurement Budget Spring 2003Critical Decision 2b – Performance Baseline April 2004Critical Decision 3a – Start Long-Lead Procurements August 2004Fund Long-Lead Procurements October 2004Critical Decision 3b – Start Construction August 2005Fund Construction October 2005Construction Complete End of FY2008
CD-0
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source14
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS PED/Project OrganizationLCLS PED/Project Organization
FEL PhysicsC. Pellegrini, UCLAH. D. Nuhn, SLAC
ES&H: Ian EvansSLAC Radiation Physics:
S. Rokni, S. M ao, W . R. Nelson, A. Prinz
1.2.1Injector
Jim Clendenin, SLAC
1.2.2Linac
Vinod Bharadwaj, SLAC
1.2.3Undulator
Efim G luskin, ANL
1.2Electron Beam
Systems
1.3.1 X-ray Transport, Optics,DiagnosticsRichard Bionta, LLNL
1.3.2 X-ray Endstation SystemsJerry Hastings, SLAC-SSRL
1.3Photon Beam
Systems
1.4 Conventional FacilitiesDavid Saenz, SLAC
Project M anagem entJohn Galayda - Project Director
L. Klaisner, Chief Engineer
FEL PhysicsC. Pellegrini, UCLAH. D. Nuhn, SLAC
ES&H: Ian EvansSLAC Radiation Physics:
S. Rokni, S. M ao, W . R. Nelson, A. Prinz
1.2.1Injector
Jim Clendenin, SLAC
1.2.2Linac
Vinod Bharadwaj, SLAC
1.2.3Undulator
Efim G luskin, ANL
1.2Electron Beam
Systems
1.3.1 X-ray Transport, Optics,DiagnosticsRichard Bionta, LLNL
1.3.2 X-ray Endstation SystemsJerry Hastings, SLAC-SSRL
1.3Photon Beam
Systems
1.4 Conventional FacilitiesDavid Saenz, SLAC
Project M anagem entJohn Galayda - Project Director
L. Klaisner, Chief Engineer
UCLAUCLA
LLNLLLNL
LCLS builds onSLAC, ANL, LLNL experience:PEP-II and APS Projects
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source15
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Builds on SLAC Core CompetenciesLCLS Builds on SLAC Core Competencies
MOD1
KLY-1
GTFLASERROOM
GTFRF GUN
SSRL BOOSTER RING
MOD2
KLY-2MOD3
KLY-3
GTFCONTROLROOM
8 m LaserTransport System
SSRL Injector Vault
Gun R&DBNL/SLAC/UCLA Gun has been provenas an FEL driver at BNL-ATF and ANL
Basis of KEK, Frascati FEL designs
Design verification at the SSRL Gun Test Facility Limborg, C. et al., “PARMELA versus Measurements for GTF and DUVFEL” Proceedings of the 2002 European Particle Accelerator Conference, Paris 3-7 June 2002, pp. 1786-1788
-1.5 -1 -0.5 0 0.5 10
50
100
150
Time (ps)
Pea
k C
urre
nt (
A)
Instantaneous Peak Current
5 100
1
2
Slice Emittances n (
mm
mra
d)
Slice number
300pC head tail
Spectrometer Imageof Slice Quad Scan Data
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source16
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Builds on SLAC Core CompetenciesLCLS Builds on SLAC Core Competencies
Definitive work in Coherent Synchrotron Radiation theory, modeling
(After BC1)
Theory (wig OFF)Theory (wig ON)Tracking (wig OFF)Tracking (wig ON)
RR
e–
zz
coherent radiation forcoherent radiation forzz
overtaking length:overtaking length: L L00 (24 (24zzRR22))1/31/3
LL00
Z. Huang, et al. PRSTAB 5, 074401 (2002)S. Heifets, et al. SLAC-PUB-9165, 3/2002P. Emma,2002 European Part. Accel. Conf.
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source17
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Builds on SLAC and UCLA Core CompetenciesLCLS Builds on SLAC and UCLA Core Competencies
Definitive work in wake field effects-Bunch Length Control
IMPEDANCE OF A RECTANGULAR BEAM TUBE WITHSMALL CORRUGATIONS.K.L.F. Bane, G. Stupakov (SLAC). SLAC-PUB-9503, Sep 2002. 18pp. Submitted to Phys.Rev.ST Accel.Beams
EM Fields created in thewake of electron bunch
Energy loss of electronsversus position in bunch
Pulse length Control in an X-ray FELBy Using Wake FieldsS. Reiche, P. Emma, C. PellegriniTo be published in the proceedings of the joint ICFA Advanced AcceleratorAnd Beam Dynamics Workshop, Chia Laguna Sardinia, 4-6 July 2002
4 fs power spike producedBy current spike, wake field
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source18
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Builds on LLNL Core CompetenciesLCLS Builds on LLNL Core Competencies
•LLNL tests of damage to silicon crystal•Exposure to high- power laser with similar energy deposition•Threshold for melting 0.16 J/cm2, as predicted in model
•Fabrication/test of refractive Fresnel lens•Machined with a diamond point
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source19
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Builds on ANL Core CompetenciesLCLS Builds on ANL Core Competencies
8004000-400-800Z(mm)
-2.0
-1.0
0.0
1.0
2.0
Hor
izon
tal T
raje
ctor
y(µ
)
Horizontal Trajectory
Mic
ron
s
LCLS Undulator Prototype
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source20
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
SLAC Building New Core CompetenciesSLAC Building New Core Competencies
9 ps9 ps 0.4 ps0.4 ps<100 fs<100 fs
50 ps50 ps
SLAC LinacSLAC Linac
1 GeV1 GeV 20-50 GeV20-50 GeV
FFTBFFTB
12-meter chicane compressor 12-meter chicane compressor 12-meter chicane compressor 12-meter chicane compressor 5-meter undulator5-meter undulator5-meter undulator5-meter undulator
Ultrafast laser/x-ray physics - the Sub-Picosecond Photon Source
The SPPS collaboration will develop experimental techniques essential to LCLS science•Synchronization•Short pulse diagnostics for x-ray beams•Control of timing and pulse length
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source21
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Workshop – Experimental Opportunities with LCLS – 8-9 October 2002 Workshop – Experimental Opportunities with LCLS – 8-9 October 2002
The LCLS Project is in its initial phase with a construction start scheduled for FY 2006. The DOE is planningThe LCLS Project is in its initial phase with a construction start scheduled for FY 2006. The DOE is planningto provide specific funding for construction of experiments after Critical Decision 3 (start of LCLS to provide specific funding for construction of experiments after Critical Decision 3 (start of LCLS construction) has been taken, expected in mid 2005 calendar year. However, DOE will, starting in FY2003, construction) has been taken, expected in mid 2005 calendar year. However, DOE will, starting in FY2003, review and fund proposals for research needed to design an LCLS experiment. The purpose of this review and fund proposals for research needed to design an LCLS experiment. The purpose of this Planning Workshop is to provide prospective LCLS researchers with the information necessary to start the Planning Workshop is to provide prospective LCLS researchers with the information necessary to start the experiment planning process. It will also mark the beginning of a dialog between future LCLS experimenters experiment planning process. It will also mark the beginning of a dialog between future LCLS experimenters and the Project Team that will shape the development of the LCLS from conceptual design to running and the Project Team that will shape the development of the LCLS from conceptual design to running facility. facility.
30 Attendees, including “first Experiments” co-authors30 Attendees, including “first Experiments” co-authors Presented Proposal/Review SequencePresented Proposal/Review Sequence LCLS Scientific Advisory Committee, chaired by Roger Falcone, UCBLCLS Scientific Advisory Committee, chaired by Roger Falcone, UCB Identification of R&D needs prerequisite to proposalsIdentification of R&D needs prerequisite to proposals Timing and related diagnosticsTiming and related diagnostics DetectorsDetectors Damage studiesDamage studies
The LCLS Project is in its initial phase with a construction start scheduled for FY 2006. The DOE is planningThe LCLS Project is in its initial phase with a construction start scheduled for FY 2006. The DOE is planningto provide specific funding for construction of experiments after Critical Decision 3 (start of LCLS to provide specific funding for construction of experiments after Critical Decision 3 (start of LCLS construction) has been taken, expected in mid 2005 calendar year. However, DOE will, starting in FY2003, construction) has been taken, expected in mid 2005 calendar year. However, DOE will, starting in FY2003, review and fund proposals for research needed to design an LCLS experiment. The purpose of this review and fund proposals for research needed to design an LCLS experiment. The purpose of this Planning Workshop is to provide prospective LCLS researchers with the information necessary to start the Planning Workshop is to provide prospective LCLS researchers with the information necessary to start the experiment planning process. It will also mark the beginning of a dialog between future LCLS experimenters experiment planning process. It will also mark the beginning of a dialog between future LCLS experimenters and the Project Team that will shape the development of the LCLS from conceptual design to running and the Project Team that will shape the development of the LCLS from conceptual design to running facility. facility.
30 Attendees, including “first Experiments” co-authors30 Attendees, including “first Experiments” co-authors Presented Proposal/Review SequencePresented Proposal/Review Sequence LCLS Scientific Advisory Committee, chaired by Roger Falcone, UCBLCLS Scientific Advisory Committee, chaired by Roger Falcone, UCB Identification of R&D needs prerequisite to proposalsIdentification of R&D needs prerequisite to proposals Timing and related diagnosticsTiming and related diagnostics DetectorsDetectors Damage studiesDamage studies
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source22
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLS Science Program based on the SSRL ModelLCLS Science Program based on the SSRL Model
Experiment Proposals will be developed by leading research Experiment Proposals will be developed by leading research teams with SSRL involvementteams with SSRL involvement
Proposals will be reviewed by the LCLS Scientific Advisory Proposals will be reviewed by the LCLS Scientific Advisory CommitteeCommittee
Research teams secure outside funding with SSRL participation Research teams secure outside funding with SSRL participation and sponsorship as appropriateand sponsorship as appropriate
SSRL will manage constructionSSRL will manage constructionProvides cost and schedule control, rationalized designProvides cost and schedule control, rationalized design
Provides basis for establishing maintenance and support Provides basis for establishing maintenance and support infrastructureinfrastructure
SSRL will partner with research teams to commission endstationsSSRL will partner with research teams to commission endstationsTransit from commissioning to general user operations with Transit from commissioning to general user operations with deliberate speeddeliberate speed
““General user” mode with beam time allocation based on SAC General user” mode with beam time allocation based on SAC recommendationsrecommendations
Experiment Proposals will be developed by leading research Experiment Proposals will be developed by leading research teams with SSRL involvementteams with SSRL involvement
Proposals will be reviewed by the LCLS Scientific Advisory Proposals will be reviewed by the LCLS Scientific Advisory CommitteeCommittee
Research teams secure outside funding with SSRL participation Research teams secure outside funding with SSRL participation and sponsorship as appropriateand sponsorship as appropriate
SSRL will manage constructionSSRL will manage constructionProvides cost and schedule control, rationalized designProvides cost and schedule control, rationalized design
Provides basis for establishing maintenance and support Provides basis for establishing maintenance and support infrastructureinfrastructure
SSRL will partner with research teams to commission endstationsSSRL will partner with research teams to commission endstationsTransit from commissioning to general user operations with Transit from commissioning to general user operations with deliberate speeddeliberate speed
““General user” mode with beam time allocation based on SAC General user” mode with beam time allocation based on SAC recommendationsrecommendations
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source23
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Experiment Requirements – Repetition RateExperiment Requirements – Repetition Rate
Rate limitsRate limitsPump/probe with low-power laser – 1-10 KHzPump/probe with low-power laser – 1-10 KHz
Pump/probe with high-power laser – 10 HzPump/probe with high-power laser – 10 Hz
Insert new sample – 0.1-100 HzInsert new sample – 0.1-100 Hz
Read out imaging data ~10 MB/shot, -> 1 GB/sec @ 120 HzRead out imaging data ~10 MB/shot, -> 1 GB/sec @ 120 Hz9 TB/day!9 TB/day!
Imaging detectors matched to LCLS don’t exist today – too slowImaging detectors matched to LCLS don’t exist today – too slow
Ideal bunch structure for ultrafast physics with an Ideal bunch structure for ultrafast physics with an FELFEL
Uniform spacingUniform spacing
10-1,000 Hz, consistent with limitations above10-1,000 Hz, consistent with limitations above
Rate limitsRate limitsPump/probe with low-power laser – 1-10 KHzPump/probe with low-power laser – 1-10 KHz
Pump/probe with high-power laser – 10 HzPump/probe with high-power laser – 10 Hz
Insert new sample – 0.1-100 HzInsert new sample – 0.1-100 Hz
Read out imaging data ~10 MB/shot, -> 1 GB/sec @ 120 HzRead out imaging data ~10 MB/shot, -> 1 GB/sec @ 120 Hz9 TB/day!9 TB/day!
Imaging detectors matched to LCLS don’t exist today – too slowImaging detectors matched to LCLS don’t exist today – too slow
Ideal bunch structure for ultrafast physics with an Ideal bunch structure for ultrafast physics with an FELFEL
Uniform spacingUniform spacing
10-1,000 Hz, consistent with limitations above10-1,000 Hz, consistent with limitations above
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source24
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
LCLSLCLS
Now – 120 Hz, 1 bunch per shot to one endstationNow – 120 Hz, 1 bunch per shot to one endstation
Future – up to 100 bunches per shot, 120 HzFuture – up to 100 bunches per shot, 120 HzFan out to multiple endstations, 120 HzFan out to multiple endstations, 120 Hz
1-100 bunches/shot at one endstation1-100 bunches/shot at one endstation
SLAC linac was designed for 360 Hz operationSLAC linac was designed for 360 Hz operation
Now – 120 Hz, 1 bunch per shot to one endstationNow – 120 Hz, 1 bunch per shot to one endstation
Future – up to 100 bunches per shot, 120 HzFuture – up to 100 bunches per shot, 120 HzFan out to multiple endstations, 120 HzFan out to multiple endstations, 120 Hz
1-100 bunches/shot at one endstation1-100 bunches/shot at one endstation
SLAC linac was designed for 360 Hz operationSLAC linac was designed for 360 Hz operation
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source25
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
TESLA Pulse Structure optimized for ColliderTESLA Pulse Structure optimized for Collider
Up to 11,000 bunches per power pulse in 1 msecUp to 11,000 bunches per power pulse in 1 msec
5-10 power pulses per second5-10 power pulses per second
TDR: 1.25 Hz at each undulatorTDR: 1.25 Hz at each undulator
1 msec light, 799 msec darkness1 msec light, 799 msec darkness
CW operation of SC linacCW operation of SC linacNot in TESLA-XFEL planNot in TESLA-XFEL plan
Part of BESSY designPart of BESSY design
Higher initial cost (15 MV/m or less)Higher initial cost (15 MV/m or less)Initial cost (+ space limitations at BESSY) vs cryocooling billInitial cost (+ space limitations at BESSY) vs cryocooling bill
CW gun must be developedCW gun must be developed
Up to 11,000 bunches per power pulse in 1 msecUp to 11,000 bunches per power pulse in 1 msec
5-10 power pulses per second5-10 power pulses per second
TDR: 1.25 Hz at each undulatorTDR: 1.25 Hz at each undulator
1 msec light, 799 msec darkness1 msec light, 799 msec darkness
CW operation of SC linacCW operation of SC linacNot in TESLA-XFEL planNot in TESLA-XFEL plan
Part of BESSY designPart of BESSY design
Higher initial cost (15 MV/m or less)Higher initial cost (15 MV/m or less)Initial cost (+ space limitations at BESSY) vs cryocooling billInitial cost (+ space limitations at BESSY) vs cryocooling bill
CW gun must be developedCW gun must be developed
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source26
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
ConclusionConclusion
LCLS poised to start Project Engineering DesignLCLS poised to start Project Engineering DesignPED for FY2003 - Preliminary design of undulator, injector – PED for FY2003 - Preliminary design of undulator, injector – CD-2ACD-2A
LCLS Collaboration well-matched to LCLS challengesLCLS Collaboration well-matched to LCLS challengesAccelerator science and technologyAccelerator science and technology
Synchrotron radiation research and instrumentationSynchrotron radiation research and instrumentation
Project management experienceProject management experience
Experiment Program Planning underway, based on Experiment Program Planning underway, based on successful SSRL modelsuccessful SSRL model
LCLS pre-proposal R&D requests starting FY2003LCLS pre-proposal R&D requests starting FY2003
Proposals for LCLS science in FY2006-FY2006 Proposals for LCLS science in FY2006-FY2006
LCLS poised to start Project Engineering DesignLCLS poised to start Project Engineering DesignPED for FY2003 - Preliminary design of undulator, injector – PED for FY2003 - Preliminary design of undulator, injector – CD-2ACD-2A
LCLS Collaboration well-matched to LCLS challengesLCLS Collaboration well-matched to LCLS challengesAccelerator science and technologyAccelerator science and technology
Synchrotron radiation research and instrumentationSynchrotron radiation research and instrumentation
Project management experienceProject management experience
Experiment Program Planning underway, based on Experiment Program Planning underway, based on successful SSRL modelsuccessful SSRL model
LCLS pre-proposal R&D requests starting FY2003LCLS pre-proposal R&D requests starting FY2003
Proposals for LCLS science in FY2006-FY2006 Proposals for LCLS science in FY2006-FY2006
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source27
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
SCRF vs. Copper for an FELSCRF vs. Copper for an FEL
SCRF: SCRF: Reduced wake field for long, high-charge bunches is an HEP trade-Reduced wake field for long, high-charge bunches is an HEP trade-offoff
SCRF has SCRF has no advantageno advantage over Cu in achieving FEL goals of over Cu in achieving FEL goals ofPeak brightnessPeak brightness
Short pulse (Wake fields of Cu are employed for bunch compression)Short pulse (Wake fields of Cu are employed for bunch compression)
CopperCopperHigher transverse wake trade-off against higher gradient at low Higher transverse wake trade-off against higher gradient at low energyenergy
FEL bunch length is shortFEL bunch length is short
FEL bunch charge is lower than collider requirementsFEL bunch charge is lower than collider requirements
Transverse wakes not an issue above 250 MeVTransverse wakes not an issue above 250 MeV
Italy, Japan choosing copper linac for green-field FELsItaly, Japan choosing copper linac for green-field FELsAt least 30% cost savings compared to SCRFAt least 30% cost savings compared to SCRF
SCRF: SCRF: Reduced wake field for long, high-charge bunches is an HEP trade-Reduced wake field for long, high-charge bunches is an HEP trade-offoff
SCRF has SCRF has no advantageno advantage over Cu in achieving FEL goals of over Cu in achieving FEL goals ofPeak brightnessPeak brightness
Short pulse (Wake fields of Cu are employed for bunch compression)Short pulse (Wake fields of Cu are employed for bunch compression)
CopperCopperHigher transverse wake trade-off against higher gradient at low Higher transverse wake trade-off against higher gradient at low energyenergy
FEL bunch length is shortFEL bunch length is short
FEL bunch charge is lower than collider requirementsFEL bunch charge is lower than collider requirements
Transverse wakes not an issue above 250 MeVTransverse wakes not an issue above 250 MeV
Italy, Japan choosing copper linac for green-field FELsItaly, Japan choosing copper linac for green-field FELsAt least 30% cost savings compared to SCRFAt least 30% cost savings compared to SCRF
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source28
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
End of Presentation
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source29
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Peak and time
averaged
brightness
of the LCLS and
other facilities
operating or
under
construction
Performance Characteristics
LEUTL
TTF FEL
LCLS Spontaneous
DESY XFEL
LCLS
TESLA
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source30
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Linac CenterLine
Sector 20 Linacs
Straight AheadTune-Up Dump
Sector 21-1B
5 meters
Scale:
L0-1
L0-2
RF TransverseDeflector
EmittanceWire Scanners Energy Wire
Scanner & OTR
Matching Section
Quadrupole,typ.
RFGun
Cathode LoadLock
DL1 Bend
Linac Solenoid
Gun Solenoid
Gun-to-Linac
L0 Linacs
Linac Coherent Light Source
1992: Proposal (C. Pellegrini)1998: Preliminary Design Study Completed1999: R&D funded at $1.5M/year2001: CD-02002: Conceptual Design http://www-ssrl.slac.stanford.edu/lcls/CDR/2003: Project Engineering Design begins2005: Long-Lead Procurements begin2006: Construction begins2007: First Light2008: Project completion
SLAC Linac
Two Chicanes for bunch compression
FFTB TunnelUndulator Hall
SLAC On-site Review 15 October 2002SLAC On-site Review 15 October 2002 John N. Galayda, SLACJohn N. Galayda, SLAC
The Linac Coherent Light SourceThe Linac Coherent Light Source31
[email protected]@slac.stanford.edu
Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center
Conventional ConstructionConventional Construction
Final Focus Test Beam ExtensionFinal Focus Test Beam Extension
Hall AHall A
TunnelTunnel
Hall BHall B
Final Focus Test Beam ExtensionFinal Focus Test Beam Extension
Hall AHall A
TunnelTunnel
Hall BHall B