Photon Systems Overview

1. Photon Systems Overview John Arthur

2. LCLS Photon Systems Includes LCLS x-ray and laser groups • X-ray Transport, Optics and Diagnostics (XTOD) • managed by LLNL (Richard Bionta) • X-ray Endstation Systems (XES) • managed by SLAC (Stefan Moeller) • LCLS Laser Systems • managed by SLAC (TBD)

3. Recent Developments affecting all X-ray Systems (and Conv. Facilities) • Suggested Plan for Offset Mirrors in Front End • Suggested Redesign of Far Experimental Hall These ideas are in the development stage, not yet official But they look very promising

4. Offset mirrors in the FEE Upstream of all LCLS experiments FEL radiation reflected (>95%) SiC 1.5mrad SiC 1.5mrad 24mm offset Background from high harmonics and Bremsstrahlung not reflected

5. Proposed new layout of FEE 3 ft concrete 4 ft Fe 4 ft Fe Mirrors GAS ATTEN STOP COLLIM STOP SOLID ATTEN 15m 11.6m

6. Advantages of Offset Mirrors • Keep high-energy radiation out of experiments • Eliminate troublesome background • Note: nearly all synchrotron beamlines use some offset • Keep high-energy radiation farther away from experimenters • Reduce shielding requirements, make hutches more easily accessible

7. Redesign of FEH Office and shop space (Vac., Mech.,Electr.) Experimental hutches (7x8m) TOO SMALL FEL beams

8. Possible new FEH layout Wider main tunnel Reduced corridor space Large hutches Slightly higher cost 8x10 m 10x10 m 8x10 m

9. XTOD Scope • Transport the x-ray beam, in vacuum, to all the experimental stations • Condition the x-ray beam, with attenuators and apertures • Analyze the x-ray beam, with sophisticated diagnostics

10. XTOD Optics NEH Main Elements Flipper Mirror Front End Enclosure Diagnostics Direct Imagers Indirect Imager Total Energy Spectrometers Photon Beam Solid Attenuator Gas Attenuator Electron Beam

11. XTOD Staff-up complete for FY05 R. Bionta LLNL LCLS Project Leader D. McMahon XTOD Project Engineer J. McNamara Admin. Rodney Victorine Resource Manager Jolyn Scholes Resource Analyst M. Eberstein G. Otani Procurement R. Beale Hazards Control EE E. Ables ME P. Duffy M. Mckernan S. Shen J. Trent Comp K. Fong S. Lewis L. Ott Physics S. Friedrich S. Hau-Reige M. Pivovaroff D. Ryutov DNT R. London UC Davis H. Baldis Remainder of FY05 P3 labor "loosly" matrixed, i.e L. Li - thermal analysis, S. Bajt - multilayers, shops, finance…

12. XTOD work flow will follow ISMS practices for each WBS element WBS Dictionary LCLS Physics Requirements ICDs IWS (Integrated Work Sheet) is LLNL wide e-form for documenting ISMS for each work package: Scope Hazards Controls Roles (RI…) Responsibilities Training Signoff Hardware Installation Operations Servicing ERDs Designs Certified Parts Lists Eng. Safety Notes

13. Status of Selected XTOD Instrumentation

14. Wide Field of View Direct Imager Calculation Photoelectrons Concept Optic Camera Scintillators

15. Indirect Imager Concept 1 m 101 mm Calculation

16. R&D on High-Fluence Damage to Optics Experiment planned at TTF2 (DESY FEL) in early FY06 Expose various materials to GW-level soft x-ray pulses

17. Experiment to test damage models at 40 eV Sample cassette

18. FY05 Goals • Mechanical and Vacuum • Cost estimate and Engineering Plan through NEH • IWS's, ICD's, and ERD's • Detailed plans / parts for prototype: • Gas Attenuator, Control system tests, concepts for monitoring beam and attenuation • Total Energy, 1 pixel • Direct Imager, for 826 eV tests at SSRL • Monte-Carlo simulations of FEE instruments • Document in ERDs • Apertures, Expected light levels, Reflectivity, …

19. FY05 Goals (cont.) • Conceptual designs and sample optics for • Indirect Imager • Spectrometer • Controls • Cost estimate and Engineering Plan • Prototype Controls • Gas Attenuator • Direct Imager • TTF Damage Experiment • Samples Fabricated and Documented

20. XTOD Summary FY05 staffing plan implemented FY05 work plan begun Near term emphasis on Commissioning and FEE

21. XES Scope The X-Ray Endstation Systems group provides the infrastructure required for experimenters to make best scientific use of the LCLS radiation safely

22. The Endstation Systems will provide: Personnel protection systems (PPS) Protect people from x-rays, lasers, etc. Network and computer support Cables, networks, servers, data storage Prototype detectors a suite of x-ray detectors for experiments Instrumentation for first Atomic Physics experiments Beamline controls Synchronized laser system Optics, chambers, sample handling, etc.

23. Recent Progress • Solidification of scope of PIXEL project, clarification of XES instrumentation • New group leader: Stefan Moeller • Instituted user safety forum • How to build in a safe working environment for LCLS users

24. PIXEL and XES • A ~$50M project called Photon Instrumentation for X-ray Experiments at LCLS (PIXEL) has been proposed • Will build 4 x-ray instruments for LCLS • Instrumentation needs are becoming much more clear • XES has decided not to build generic instrumentation but rather, • LCLS will dedicate all project effort for experimental instrumentation to one area of science: Soft X-ray Atomic Physics (AMO)

25. XES Status • Reworking schedules to focus on AMO • Preparing to staff up • Commencing 2-d x-ray detector development program • MOU in signing stage

26. XES Plan for FY05 • Hire AMO scientist and detector scientist • Then hire controls engineer • Start detailed design of AMO and detectors • Commence 2-d detector project • No long-lead procurement

27. XES Summary • Starting to staff up • Responding to improved understanding of LCLS experiments • Starting detector development program • Coordinating with XTOD, conv. facilties, and PIXEL • Coordinating with SLAC safety personnel regarding user safety