Transcript Document 7260314

Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Linac Coherent Light Source Update
John N. Galayda, Stanford Linear Accelerator Center
5 November 2002
Overview
Project Status
LCLS user workshop
Collaboration with TESLA
Project R&D
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
1
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Overview
The world’s first hard x-ray laser
Unprecedented brightness, Unprecedented time
resolution
0.8 – 8 keV SASE Free Electron Laser
Electron beam 4.5 – 14.35 GeV, from SLAC Linac
Peak power in SASE bandwidth 8 GW
Peak brightness 1033 photons/(mm2 mr2 0.1%BW)
Pulse duration  230 femtoseconds
Pulse repetition rate 120 Hz
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
2
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
LCLS
Operating
Ranges
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
3
John N. Galayda, SLAC
[email protected]
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Linac Coherent Light Source
Linac Coherent Light Source
1992: Proposal (C. Pellegrini)
1998: Preliminary Design Study Completed
1999: R&D funded at $1.5M/year
2001: CD-0
2002: Conceptual Design http://www-ssrl.slac.stanford.edu/lcls/CDR/
2003: Project Engineering Design begins
2005: Long-Lead Procurements begin
2006: Construction begins
2007: First Light
2008: Project completion
FFTB Tunnel
SLAC Linac
Undulator Hall
RF
Gun
Gun-to-Linac
Two Chicanes for bunch compression
Cathode Load
Lock
L0 Linacs
L0-1
Gun Solenoid
L0-2
Linac Solenoid
Matching Section
Scale:
5 meters
Quadrupole,
typ.
RF Transverse
Deflector
DL1 Bend
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
Linac Center
Line
4
Sector 20
John
N.Linacs
Galayda, SLAC
Emittance
Energy Wire
Wire Scanners
[email protected]
Scanner & OTR
Sector 21-1B
Straight Ahead
Tune-Up Dump
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Conventional Construction
Final Focus Test Beam Extension
Hall A
Tunnel
Hall B
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Estimated Cost, Schedule
$200M-$240M Total Estimated Cost range
$245M-$295M 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
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
6
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Construction Strategy
2003 – Project Engineering Design Begins
$6M budget
Prepare for Long-lead procurements in 2005
Undulator
Gun Laser
Injector Linac Systems
Spring 2003 – review of plans for long lead procurements
CD-2A Go-ahead required
Spring 2004 – Complete Preliminary Design of LCLS
CD-2 requirements complete for entire project
October 2004 – begin long-lead procurements
Summer 2005 – Critical Decision 3 – Approve start of
construction
Winter 2007 – Begin FEL commissioning
October 2008 – Project Complete
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Preliminary Schedule
CD-0
CD-1
CD-2b
CD-3b
CD-2a
FY2001
FY2002
Design
FY2003
2002
2003
FY2004
2004
FY2005
2005
FY2006
2006
FY2007
FY2008
Operation
Construction
CD-3a
Critical Decision 0 – Mission Need
Critical Decision 1 – Preliminary Baseline Range
Start Project Engineering Design
Critical Decision 2a – Long-Lead Procurement Budget
Critical Decision 2b – Performance Baseline
Critical Decision 3a – Start Long-Lead Procurements
Fund Long-Lead Procurements
Critical Decision 3b – Start Construction
Fund Construction
Construction Complete
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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FY2009
June 13, 2001
September 2002
October 2002
Spring 2003
April 2004
August 2004
October 2004
August 2005
October 2005
End of FY2008
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Project Planning/Approval Status
Critical Decision 1 Approved 16 October 2002
Conceptual Design is judged sound
Preliminary Hazard Analysis accepted
Acquisition Execution Plan accepted
Preliminary Project Execution Plan accepted
Project Engineering Design Funds - $6M requested in
2003
LCLS PED funds are in House and Senate Committee Markups
LCLS PED is considered a New Start
Allocation under the continuing resolution budget is $0
Not quite as bad as it sounds
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
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
planning
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,
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
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
facility.
30 Attendees, including “first Experiments” co-authors
Discussed Proposal/Review Sequence
LCLS Scientific Advisory Committee, chaired by Roger Falcone,
UCB
Identification of R&D needs prerequisite to proposals
 Timing and related diagnostics
BESAC
Meeting 5 November 2002
 Detectors
The
Coherent
Light Source Update
 Linac
Damage
studies
10
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
LCLS Science Program based on the SSRL Model
Experiment Proposals will be developed by leading research
teams with SSRL involvement
Proposals will be reviewed by the LCLS Scientific Advisory
Committee
Research teams secure outside funding with SSRL participation
and sponsorship as appropriate
SSRL will manage construction
Provides cost and schedule control, rationalized design
Provides basis for establishing maintenance and support
infrastructure
SSRL will partner with research teams to commission endstations
“General user” mode with beam time allocation based on SAC
recommendations
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
11
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Workshop – Experimental Opportunities with LCLS – 8-9 October 2002
Proposal sequence
LCLS actions
Prepare proposal guidelines
Call for letters of intent
Target late Spring 2003 for submission deadline
LCLS Scientific Advisory Committee Review
Request Pre-proposal R&D funds if necessary
Proposals reviewed by SAC
DOE will review/approve proposals in 2005 time frame
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
12
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
SLAC-DESY/TESLA FEL Collaboration
1 November SLAC/DESY FEL Collaboration Workshop
Albrecht
Wagner
Hermann
Schunck
Ray
Orbach
Jonathan
Dorfan
Director
DESY
Ministry of
Science/Education
DOE Office
of Science
Director
SLAC
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
13
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
SLAC-DESY/TESLA FEL Collaboration
January 2000 Memorandum of Understanding
SLAC-DESY-KEK
FEL R&D
SLAC will deliver a bunch length measurement system to TTF
Expanded SLAC-DESY Collaboration, November 1 2002
Sub-Picosecond Photon Source at SLAC (SPPS)
9 kev x-rays using SLAC linac and Final Focus Test Beam
12/2002 DESY personnel will participate in commissioning
2003-2006 DESY will join in SPPS experiments
TESLA Test Facility
2003-2004 SLAC personnel will participate in commissioning
2005-2006 SLAC participation in experiments to control temporal
coherence
LCLS
2007-2008 TESLA-XFEL Participation in tests of optics
TESLA
2011—SLAC participation in TESLA-XFEL Commissioning
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
14
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Common Challenges- High Brightness Electron Sources
•Photocathode
•Laser
•Numerical techniques for gun design
•Verification with experiment
•Diagnostic Techniques
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Photocathode Gun R&D
Gun R&D
300p
C
BNL/SLAC/UCLA Gun has been proven
as an FEL driver at BNL-ATF and ANL
tail
Peak Current (A)
head
Basis of KEK, Frascati FEL designs
Spectrometer Image
of Slice Quad Scan
Data
150
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
100
Instantaneous Peak Current
50
Time (ps)
-1.5
-1
-0.5
0
0.5
1
n (mm mrad)
0
2
1
Slice Emittances
0 Slice number 5
10
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Common Challenges - Acceleration/Compression
7 MeV
z  0.83 mm
  0.2 %
RF
Gun
Linac-0
L =6 m
150 MeV
z  0.83 mm
  0.10 %
250 MeV
21-1b
21-1d
DL-1
L =12 m
z  0.023 mm
  0.76 %
Linac-X
L =0.6 m
Linac-1
L =9 m
...existing linac
4.54 GeV
z  0.19 mm
  1.8 %
Linac-2
L =330 m
Linac-3
L =550 m
21-3b
24-6d
X
BC-1
L =6 m
4.54-14.35 GeV
z  0.023 mm
  0.02 %
Undulator
L =121.8 m
25-1a
30-8c
BC-2
L =22 m
DL-2
L =66 m
Beam
Dump
Undulator Hall
SLAC linac tunnel
140 MeV
500 MeV
2.5 GeV
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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1.5 Å
8 GW
z  0.023
mm
15 Å
17 GW
z  0.023
mm
John N. Galayda, SLAC
[email protected]
Exp Halls
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Common Challenge – Coherent Synchrotron Radiation
bend-plane emittance growth
January 14-18, 2002 at DESY-Zeuthen (Berlin, GERMANY)
LB
s
DL
LB L L B
c
DL
LB L
f
DE/E = 0
B2
Dx
B3
Chicane CSR Test-Case
DE/E < 0
B1


Coherent Synchrotron Radiation
•Theory
•Numerical computations:
SC-wiggler
damps
bunching
•ANL, SLAC, TESLA, JLAB, ENEA
•Experiment
•Short, high current bunches
S. Heifets, S. Krinsky, G. Stupakov, SLAC-PUB 9165, March 2002
Z. Huang, K. J. Kim, PRSTAB 5 074401(2002)
E. Saldin, et al. TESLA-FEL 2002-2 (submitted to NIM)
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
B4
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Coherent Synchrotron Radiation
Definitive work in Coherent Synchrotron Radiation
theory, modeling
coherent radiation for l > z
z
l
L0
e–

Theory (wig OFF)
Theory (wig ON)
Tracking (wig OFF)
Tracking (wig ON)
R
overtaking length: L0  (24zR2)1/3
Z. Huang, et al. PRSTAB 5, 074401 (2002)
S. Heifets, et al. SLAC-PUB-9165, 3/2002
P. Emma,2002 European Part. Accel. Conf.
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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(After BC1)
John N. Galayda, SLAC
[email protected]
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Linac Coherent Light Source
Short Bunch Diagnostics Tests Planned for TESLA, SLAC
P. Emma,
J. Frisch,
P. Krejcik,
G. Loew,
X.-J. Wang
2.44 m
V(t)
e
Tested at
SLAC
RF
‘streak’
x
S-band
z
Added to
TTF-II
D  90°
Beam pipe
Added
To
SPPS
Electron bunch
Co-propagating
Laser pulse
Tested
at
TTF
Polarizer
EO Crystal
wl
Spectrometer
Analyzer
I
t
Initial laser chirp
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
t
Bunch charge
20
ws
Gated spectral signal
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
SASE Light Pulse length
LCLS Simulation
SASE light pulse shorter than electron bunch
TTF x-ray pulse length
data
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
LCLS Studies ongoing re: controllability
21
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Common Goals – Seeding, Harmonic Generation
Si monochromator
(T = 40%)
230 fs
e
10 fs
43 m
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
30 m
22
52 m
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
News from DESY
A more modest start for the TESLA XFEL Laboratory
20 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.html
J. 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
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Sub-Picosecond Pulse Source
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
50 ps
SLAC Linac
1 GeV
9 ps
0.4 ps
FFTB
20-50 GeV
12-meter chicane compressor
<100 fs
5-meter undulator
•Chicane installed
•Wiggler inside FFTB tunnel
•Construction of x-ray beamline underway
•Chicane tests November-December 2002
•X-ray experiments begin May 2003
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Undulator R&D
LCLS Undulator Prototype
Horizontal Trajectory(µ)
Horizontal Trajectory
Microns
2.0
1.0
0.0
-1.0
-2.0
-800
-400
0
Z(mm)
400
•Prototype construction complete
•Field quality specifications met
•Ongoing investigation of thermal stability
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
25
John N. Galayda, SLAC
[email protected]
800
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Conclusion
LCLS poised to start Project Engineering Design
PED for FY2003 - Preliminary design of undulator, injector –
CD-2A
LCLS Collaboration well-matched to LCLS challenges
Accelerator science and technology
Synchrotron radiation research and instrumentation
Project management experience
Experiment Program Planning underway, based on
successful SSRL model
LCLS pre-proposal R&D requests starting FY2003
Proposals for LCLS science in FY2006-FY2006
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
26
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
Selected LCLS Baseline Design Parameters
Fundamental FEL Radiation Wavelength
Electron Beam Energy
Normalized RMS Slice Emittance
Peak Current
Bunch/Pulse Length (FWHM)
Relative Slice Energy Spread @ Entrance
Saturation Length
FEL Fundamental Saturation Power @ Exit
FEL Photons per Pulse
Peak Brightness @ Undulator Exit
Transverse Coherence
RMS Slice X-Ray Bandwidth
RMS Projected X-Ray Bandwidth
1.5
14.3
1.2
3.4
230
<0.01
87
8
1.1
0.8
Full
0.06
0.13
15
4.5
1.2
3.4
230
0.025
25
17
29
0.06
Full
0.24
0.47
Å
GeV
mm-mrad
kA
fs
%
m
GW
1012
1033 *
%
%
* photons/sec/mm2/mrad2/ 0.1%-BW
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
27
John N. Galayda, SLAC
[email protected]
Linac Coherent Light Source
Stanford Synchrotron Radiation Laboratory
Stanford Linear Accelerator Center
End of Presentation
BESAC Meeting 5 November 2002
The Linac Coherent Light Source Update
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John N. Galayda, SLAC
[email protected]