the linac coherent light source update [email protected] linac coherent light source...

BESAC Meeting 5 November 2002BESAC Meeting 5 November 2002 John N. Galayda, SLACJohn N. Galayda, SLAC

The Linac Coherent Light Source UpdateThe Linac Coherent Light Source Update1

[email protected]@slac.stanford.edu

Linac Coherent Light Source Stanford Synchrotron Radiation LaboratoryStanford Linear Accelerator Center

Linac Coherent Light Source UpdateJohn N. Galayda, Stanford Linear Accelerator Center

5 November 2002

Linac Coherent Light Source UpdateJohn N. Galayda, Stanford Linear Accelerator Center

5 November 2002

OverviewOverview

Project StatusProject Status

LCLS user workshopLCLS user workshop

Collaboration with TESLACollaboration with TESLA

Project R&DProject R&D

OverviewOverview

Project StatusProject Status

LCLS user workshopLCLS user workshop

Collaboration with TESLACollaboration with TESLA

Project R&DProject R&D





OverviewOverview

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





LCLSOperatingRanges





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





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





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





Construction StrategyConstruction Strategy

2003 – Project Engineering Design Begins2003 – Project Engineering Design Begins$6M budget$6M budget

Prepare for Long-lead procurements in 2005Prepare for Long-lead procurements in 2005UndulatorUndulator

Gun LaserGun Laser

Injector Linac SystemsInjector Linac Systems

Spring 2003 – review of plans for long lead procurementsSpring 2003 – review of plans for long lead procurementsCD-2A Go-ahead requiredCD-2A Go-ahead required

Spring 2004 – Complete Preliminary Design of LCLSSpring 2004 – Complete Preliminary Design of LCLSCD-2 requirements complete for entire projectCD-2 requirements complete for entire project

October 2004 – begin long-lead procurementsOctober 2004 – begin long-lead procurements

Summer 2005 – Critical Decision 3 – Approve start of Summer 2005 – Critical Decision 3 – Approve start of constructionconstruction

Winter 2007 – Begin FEL commissioningWinter 2007 – Begin FEL commissioning

October 2008 – Project CompleteOctober 2008 – Project Complete

2003 – Project Engineering Design Begins2003 – Project Engineering Design Begins$6M budget$6M budget

Prepare for Long-lead procurements in 2005Prepare for Long-lead procurements in 2005UndulatorUndulator

Gun LaserGun Laser

Injector Linac SystemsInjector Linac Systems

Spring 2003 – review of plans for long lead procurementsSpring 2003 – review of plans for long lead procurementsCD-2A Go-ahead requiredCD-2A Go-ahead required

Spring 2004 – Complete Preliminary Design of LCLSSpring 2004 – Complete Preliminary Design of LCLSCD-2 requirements complete for entire projectCD-2 requirements complete for entire project

October 2004 – begin long-lead procurementsOctober 2004 – begin long-lead procurements

Summer 2005 – Critical Decision 3 – Approve start of Summer 2005 – Critical Decision 3 – Approve start of constructionconstruction

Winter 2007 – Begin FEL commissioningWinter 2007 – Begin FEL commissioning

October 2008 – Project CompleteOctober 2008 – Project Complete





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





Project Planning/Approval StatusProject Planning/Approval Status

Critical Decision 1 Approved 16 October 2002Critical Decision 1 Approved 16 October 2002Conceptual Design is judged soundConceptual Design is judged sound

Preliminary Hazard Analysis acceptedPreliminary Hazard Analysis accepted

Acquisition Execution Plan acceptedAcquisition Execution Plan accepted

Preliminary Project Execution Plan acceptedPreliminary Project Execution Plan accepted

Project Engineering Design Funds - $6M requested in Project Engineering Design Funds - $6M requested in 20032003

LCLS PED funds are in House and Senate Committee LCLS PED funds are in House and Senate Committee MarkupsMarkups

LCLS PED is considered a LCLS PED is considered a New StartNew StartAllocation under the continuing resolution budget is $0Not quite as bad as it sounds

Critical Decision 1 Approved 16 October 2002Critical Decision 1 Approved 16 October 2002Conceptual Design is judged soundConceptual Design is judged sound

Preliminary Hazard Analysis acceptedPreliminary Hazard Analysis accepted

Acquisition Execution Plan acceptedAcquisition Execution Plan accepted

Preliminary Project Execution Plan acceptedPreliminary Project Execution Plan accepted

Project Engineering Design Funds - $6M requested in Project Engineering Design Funds - $6M requested in 20032003

LCLS PED funds are in House and Senate Committee LCLS PED funds are in House and Senate Committee MarkupsMarkups

LCLS PED is considered a LCLS PED is considered a New StartNew StartAllocation under the continuing resolution budget is $0Not quite as bad as it sounds





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 Discussed Proposal/Review SequenceDiscussed 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 Discussed Proposal/Review SequenceDiscussed 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





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 SSRL will partner with research teams to commission endstationsendstations

““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 SSRL will partner with research teams to commission endstationsendstations

““General user” mode with beam time allocation based on SAC General user” mode with beam time allocation based on SAC recommendationsrecommendations





Workshop – Experimental Opportunities with LCLS – 8-9 October 2002Workshop – Experimental Opportunities with LCLS – 8-9 October 2002

Proposal sequenceProposal sequenceLCLS actionsLCLS actions

Prepare proposal guidelinesPrepare proposal guidelines

Call for letters of intent Call for letters of intent

Target late Spring Target late Spring 20032003 for submission deadline for submission deadline

LCLS Scientific Advisory Committee ReviewLCLS Scientific Advisory Committee Review

Request Pre-proposal R&D funds if necessaryRequest Pre-proposal R&D funds if necessary

Proposals reviewed by SACProposals reviewed by SAC

DOE will review/approve proposals in 2005 time frameDOE will review/approve proposals in 2005 time frame

Proposal sequenceProposal sequenceLCLS actionsLCLS actions

Prepare proposal guidelinesPrepare proposal guidelines

Call for letters of intent Call for letters of intent

Target late Spring Target late Spring 20032003 for submission deadline for submission deadline

LCLS Scientific Advisory Committee ReviewLCLS Scientific Advisory Committee Review

Request Pre-proposal R&D funds if necessaryRequest Pre-proposal R&D funds if necessary

Proposals reviewed by SACProposals reviewed by SAC

DOE will review/approve proposals in 2005 time frameDOE will review/approve proposals in 2005 time frame





SLAC-DESY/TESLA FEL CollaborationSLAC-DESY/TESLA FEL Collaboration

1 November SLAC/DESY FEL Collaboration Workshop1 November SLAC/DESY FEL Collaboration Workshop1 November SLAC/DESY FEL Collaboration Workshop1 November SLAC/DESY FEL Collaboration Workshop

Albrecht Hermann Ray JonathanWagner Schunck Orbach DorfanDirector Ministry of DOE Office DirectorDESY Science/Education of Science SLAC





SLAC-DESY/TESLA FEL CollaborationSLAC-DESY/TESLA FEL Collaboration

January 2000 Memorandum of UnderstandingJanuary 2000 Memorandum of UnderstandingSLAC-DESY-KEKSLAC-DESY-KEK FEL R&DFEL R&D

SLAC will deliver a bunch length measurement system to TTFSLAC will deliver a bunch length measurement system to TTF

Expanded SLAC-DESY Collaboration, November 1 2002Expanded SLAC-DESY Collaboration, November 1 2002Sub-Picosecond Photon Source at SLAC (SPPS)Sub-Picosecond Photon Source at SLAC (SPPS)

9 kev x-rays using SLAC linac and Final Focus Test Beam9 kev x-rays using SLAC linac and Final Focus Test Beam12/2002 DESY personnel will participate in commissioning12/2002 DESY personnel will participate in commissioning2003-2006 DESY will join in SPPS experiments2003-2006 DESY will join in SPPS experiments

TESLA Test FacilityTESLA Test Facility2003-2004 SLAC personnel will participate in commissioning2003-2004 SLAC personnel will participate in commissioning2005-2006 SLAC participation in experiments to control temporal 2005-2006 SLAC participation in experiments to control temporal coherencecoherence

LCLSLCLS2007-2008 TESLA-XFEL Participation in tests of optics2007-2008 TESLA-XFEL Participation in tests of optics

TESLATESLA2011—SLAC participation in TESLA-XFEL Commissioning2011—SLAC participation in TESLA-XFEL Commissioning

January 2000 Memorandum of UnderstandingJanuary 2000 Memorandum of UnderstandingSLAC-DESY-KEKSLAC-DESY-KEK FEL R&DFEL R&D

SLAC will deliver a bunch length measurement system to TTFSLAC will deliver a bunch length measurement system to TTF

Expanded SLAC-DESY Collaboration, November 1 2002Expanded SLAC-DESY Collaboration, November 1 2002Sub-Picosecond Photon Source at SLAC (SPPS)Sub-Picosecond Photon Source at SLAC (SPPS)

9 kev x-rays using SLAC linac and Final Focus Test Beam9 kev x-rays using SLAC linac and Final Focus Test Beam12/2002 DESY personnel will participate in commissioning12/2002 DESY personnel will participate in commissioning2003-2006 DESY will join in SPPS experiments2003-2006 DESY will join in SPPS experiments

TESLA Test FacilityTESLA Test Facility2003-2004 SLAC personnel will participate in commissioning2003-2004 SLAC personnel will participate in commissioning2005-2006 SLAC participation in experiments to control temporal 2005-2006 SLAC participation in experiments to control temporal coherencecoherence

LCLSLCLS2007-2008 TESLA-XFEL Participation in tests of optics2007-2008 TESLA-XFEL Participation in tests of optics

TESLATESLA2011—SLAC participation in TESLA-XFEL Commissioning2011—SLAC participation in TESLA-XFEL Commissioning





Common Challenges- High Brightness Electron SourcesCommon Challenges- High Brightness Electron Sources

•Photocathode•Laser•Numerical techniques for gun design•Verification with experiment•Diagnostic Techniques





Photocathode Gun R&DPhotocathode Gun R&D

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 linac tunnelSLAC linac tunnel Undulator HallUndulator Hall

Linac-0Linac-0L L =6 m=6 m




BC-1BC-1L L =6 m=6 m

BC-2BC-2L L =22 m=22 m

DL-2DL-2L L =66 m=66 m

DL-1DL-1L L =12 m=12 m

UndulatorUndulatorL L =121.8 m=121.8 m

150 MeV150 MeVz z 0.83 mm 0.83 mm 0.10 %0.10 %

250 MeV250 MeVz z 0.19 mm 0.19 mm 1.8 %1.8 %

4.54 GeV4.54 GeVz z 0.023 mm 0.023 mm 0.76 %0.76 %

4.54-14.35 GeV4.54-14.35 GeVz z 0.023 mm 0.023 mm 0.02 %0.02 %

...existing linac...existing linac

newnew

RFRFGunGun

25-1a25-1a30-8c30-8c

21-1b21-1b21-1d21-1d XX

Linac-Linac-XXL L =0.6 m=0.6 m

21-3b21-3b24-6d24-6d

BeamBeamDumpDump

Exp HallsExp Halls

1.5 1.5 ÅÅ8 GW8 GW

z z 0.023 0.023 mmmm15 15 ÅÅ

17 GW17 GWz z 0.023 0.023

mmmm

140 MeV 500 MeV

2.5 GeV

7 MeV7 MeVz z 0.83 mm 0.83 mm 0.2 %0.2 %

Common Challenges - Acceleration/CompressionCommon Challenges - Acceleration/Compression





Common Challenge – Coherent Synchrotron RadiationCommon Challenge – Coherent Synchrotron Radiation

s

xx

bend-plane emittance growthJanuary 14-18, 2002 at DESY-Zeuthen (Berlin, GERMANY)

Chicane CSR Test-CaseChicane CSR Test-Case

Coherent Synchrotron Radiation•Theory•Numerical computations:

•ANL, SLAC, TESLA, JLAB, ENEA

•Experiment•Short, high current bunchesS. Heifets, S. Krinsky, G. Stupakov, SLAC-PUB 9165, March 2002S. Heifets, S. Krinsky, G. Stupakov, SLAC-PUB 9165, March 2002

Z. Huang, K. J. Kim, PRSTAB Z. Huang, K. J. Kim, PRSTAB 55 074401(2002) 074401(2002)

E. Saldin, et al. TESLA-FEL 2002-2 (submitted to NIM)E. Saldin, et al. TESLA-FEL 2002-2 (submitted to NIM)

SC-wiggler SC-wiggler damps damps

bunchingbunching





Coherent Synchrotron RadiationCoherent Synchrotron Radiation

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.





Short Bunch Diagnostics Tests Planned for TESLA, SLACShort Bunch Diagnostics Tests Planned for TESLA, SLAC

P. Emma,P. Emma,J. Frisch,J. Frisch,P. Krejcik,P. Krejcik,G. Loew,G. Loew,X.-J. WangX.-J. Wang

ee

zz

2.44 m2.44 m

90°90°

VV((tt))xx

RFRF‘‘streak’streak’

SS-band-band

Initial laser chirp

Polarizer AnalyzerEO Crystal

Bunch charge Gated spectral signal

Spectrometer

l

t t s

I

Electron bunch

Co-propagatingLaser pulse

Beam pipe

Tested atSLAC

TestedatTTF

Added toTTF-II

AddedToSPPS





SASE Light Pulse lengthSASE Light Pulse length

LCLS Simulation

TTF x-ray pulse length data

SASE light pulse shorter than electron bunch

LCLS Studies ongoing re: controllability





Common Goals – Seeding, Harmonic GenerationCommon Goals – Seeding, Harmonic Generation

52 m52 m43 m43 m

ee

30 m30 m

SiSi monochromator monochromator((TT = 40%) = 40%)

230 fs 10 fs





News from DESYNews from DESY

A more modest start for the TESLA XFEL Laboratory20 GeV linac

3 FEL undulator sources

2 Spontaneous undulator sources

New Technical Design Report, budget submitted to German Science Council

DESY 2002-167, TDR to be released shortly

More results from TTF: http://www.aps.anl.gov/fel2002/talks/talks.htmlJ. Schulz, Coulomb Explosion of Rare Gas Clusters Irradiated by Intense VUV Pulses of a Free Electron Laser

J. Krzywinski, Interaction of Intense, Femtosecond Soft X-ray Pulses with Solids: Desorption, Ablation and

Plasma Formation by TTF FEL SASE Radiation

A more modest start for the TESLA XFEL Laboratory20 GeV linac

3 FEL undulator sources

2 Spontaneous undulator sources

New Technical Design Report, budget submitted to German Science Council

DESY 2002-167, TDR to be released shortly

More results from TTF: http://www.aps.anl.gov/fel2002/talks/talks.htmlJ. Schulz, Coulomb Explosion of Rare Gas Clusters Irradiated by Intense VUV Pulses of a Free Electron Laser

J. Krzywinski, Interaction of Intense, Femtosecond Soft X-ray Pulses with Solids: Desorption, Ablation and

Plasma Formation by TTF FEL SASE Radiation





Sub-Picosecond Pulse SourceSub-Picosecond Pulse Source

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

•Chicane installed•Wiggler inside FFTB tunnel•Construction of x-ray beamline underway•Chicane tests November-December 2002•X-ray experiments begin May 2003





Undulator R&DUndulator R&D

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

•Prototype construction complete•Field quality specifications met•Ongoing investigation of thermal stability





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





Fundamental FEL Radiation WavelengthFundamental FEL Radiation Wavelength 1.51.5 15 15 ÅÅElectron Beam EnergyElectron Beam Energy 14.3 14.3 4.5 4.5 GeVGeVNormalized RMS Slice Emittance 1.2 1.2 1.2 1.2 mm-mm-

mradmradPeak Current 3.4 3.4 kABunch/Pulse Length (FWHM) 230 230 fsRelative Slice Energy Spread @ EntranceRelative Slice Energy Spread @ Entrance <0.01 <0.01 0.025 0.025 %%Saturation LengthSaturation Length 87 87 25 25 mmFEL Fundamental Saturation Power @ ExitFEL Fundamental Saturation Power @ Exit 8 8 17 17 GWGWFEL Photons per PulseFEL Photons per Pulse 1.1 1.1 29 29 10101212

Peak Brightness @ Undulator ExitPeak Brightness @ Undulator Exit 0.8 0.8 0.06 0.06 101033 33 **Transverse CoherenceTransverse Coherence Full Full Full FullRMS Slice X-Ray BandwidthRMS Slice X-Ray Bandwidth 0.06 0.06 0.24 0.24 %%RMS Projected X-Ray BandwidthRMS Projected X-Ray Bandwidth 0.13 0.13 0.47 0.47 %% * photons/sec/mm* photons/sec/mm22/mrad/mrad22/ 0.1%-BW/ 0.1%-BW

Selected LCLS Baseline Design ParametersSelected LCLS Baseline Design Parameters





End of Presentation

the linac coherent light source update [email protected] linac coherent light source...

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xray experiments

ttf fel sase radiation

xray beamscontrol of

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electron beam energy

bunch diagnostics tests

intense vuv pulses

german science councildesy