Keith O. HodgsonKeith O. HodgsonSSRL DirectorSSRL Director

Brief Update on the Linac Coherent Light Source - LCLSBrief Update on the Linac Coherent Light Source - LCLS

February 26, 2002February 26, 2002

Basic Energy Sciences Advisory Committee

Undulator Prototype

SASE Physics and Simulations

LLNLUCLA

LCLS - a new facility engaging a broad range of experience and capabilities drawn from the synchrotron, laser and high energy physics communities providing x-ray photons with extraordinary properties

LCLS Project - Major Collaborators

Recent Milestones and Developments

April, 2001 John Galayda joins SSRL/SLAC as Project Director

June, 2001 CD0 (Statement of Mission Need) Approved by DOE

Fall, 2001 Technical Progress on Photocathode Gun

January, 2002 DOE Guidance on Scope and Schedule

February, 2002 President’s FY2003 Budget Includes LCLS PED Funding

February, 2002 LCLS Science Advisory Committee Meets and Formulates Strategy for Framework of Experimental Program Development

April, 2002 DOE Lehman Project Review (4/23-25)

Recent Technical Progress on Photocathode Gun

• A prime determinant of output power in X-FELs is performance of photocathode guns

• Gun Test Facility (GTF) at SSRL has demonstrated performance consistent with 0.6 m slice emittance at 0.2 nC

• Computer models predict that the GTF gun, providing this same beam to the LCLS, will produce a 140 fsec, 3-4 GW pulse at 1.5 Angstrom

• A good option for commissioning the LCLS with low charge and “moderate” power (LCLS design goal is 9 GW)

MOD1

KLY-1

GTFLASERROOM

GTFRF GUN

SSRL BOOSTER RING

MOD2

KLY-2MOD3

KLY-3

GTFCONTROLROOM

8 m LaserTransport System

SSRL Injector Vault

DOE Guidance on Scope and Schedule

 

• Scope now being developed for LCLS includes the facilities necessary to characterize the LCLS beam and test the ability to:

filter focus synchronize with a pump laser split/delay the x-ray beam for pump/probe experiments monochromatize

• At 1/02 meeting of DOE-BES and SSRL/LCLS management - guidance provided on construction project scope that explicit scientific instruments would not be included

• Approach enables more accurate definition of cost (experiments are more than 5 years away), of performance metrics for completion of construction project , and for flexibility in defining and funding the science program

Leads to developing new strategy for LCLS experimental program and role of LCLS Science Advisory Committee (SAC)

LCLS Project Schedule

Schedule includes 2 years of project engineering and design (PED) prior to 3 years of construction, leading to operation in Fall, 2007

President’s FY2003 Budget Request

• PED funding proposed in FY2003 President’s Budget would begin work on engineering and detailed design

• With design about 30% complete, and successful validation and authorization from DOE construction review management, next step will be construction

• TEC range $165M-$225M

Experimental Science Program for LCLS and the LCLS Scientific Advisory Committee

• SAC strongly endorsed principle of open, peer-reviewed access and competition based on science for decision making and operation in a general user (not a PRT or CAT) model where SSRL coordinates activity (peer review) and technical management/general operation for scientific teams

• LCLS SAC will be reformulated as external advisory and oversight committee to consider proposals for LCLS instruments and science

• New SAC is being chaired by Prof. R. Falcone of UC Berkeley

• At last meeting of current SAC (2/8/02), framework began to be formulated for experimental program approach

PEDPED Construction Construction

FY02 03 04 05 06 07

O N D J F MA M J J A S O N D J F MA M J J A S O N D J F MA M J J A S O N D J F MA M J J A S O N D J F MA M J J A S

Planning Workshop

Funding for instruments

DOE accepts proposals for instruments

Call for LOI and R&D plans

Review proposals and approve submissions

• Proposed framework and timeline for evolving LCLS science program

Summary

• The LCLS will be a source of unprecedented brightness and coherence, delivered in sub-picosecond pulses

• It is the most cost and time effective route to a hard x-ray free electron laser facility

• It is based on technology and know-how available at the collaborating institutions

• Takes advantage of the availability of the SLAC linac• Builds on activities of DOE laboratories and universities in next

generation R&D and laser physics and science • R&D activities coordinate well with efforts in Europe and plans

for future XFEL facility at DESY• Will be an extraordinary new scientific tool in 2007 and beyond

For further information please contact:

Keith Hodgson, SSRL Director John Galayda, LCLS Project DirectorHodgson@SSRL.SLAC.Stanford.Edu Galayda@SLAC.Stanford.EduPh: 650 926-3153 Fx: 650 926-4100 Ph: 650 926-2371 Fx: 650 926-4100