Keith O. Hodgson SSRL Director

1. Basic Energy Sciences Advisory Committee Brief Update on the Linac Coherent Light Source - LCLS SASE Physics and Simulations Undulator Prototype Keith O. Hodgson SSRL Director February 26, 2002

2. LCLS Project - Major Collaborators UCLA LLNL 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

3. 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)

4. 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)

5. DOE Guidance on Scope and Schedule • 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 • 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 • Leads to developing new strategy for LCLS experimental program and role of LCLS Science Advisory Committee (SAC)

6. 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

7. 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

8. O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S • Proposed framework and timeline for evolving LCLS science program Review proposals and approve submissions Call for LOI and R&D plans DOE accepts proposals for instruments Planning Workshop Funding for instruments PED PED Construction Construction FY02 03 04 05 06 07 Experimental Science Program for LCLS and the LCLS Scientific Advisory Committee • 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 • 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

9. 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 Director Hodgson@SSRL.SLAC.Stanford.Edu Galayda@SLAC.Stanford.Edu Ph: 650 926-3153 Fx: 650 926-4100 Ph: 650 926-2371 Fx: 650 926-4100