Photon Systems Update

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Photon Systems Update
John Arthur SLAC Photon Systems Manager
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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)
• Laser Systems
• managed by SLAC (Bill White)

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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

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XES Scope
The X-Ray Endstation Systems group provides
the infrastructure required for experimenters to
make best scientific use of the LCLS radiation
safely. Includes advanced x-ray detector RD.
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Laser Group Scope
The Laser group coordinates laser design and
acquisition throughout the LCLS. Lasers will be
used in the electron gun and x-ray experimental
areas, and also possibly for accelerator
diagnostics and alignment.
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LUSI Project Scope
LCLS Ultrafast Science Instruments is a
distinct DOE project closely coordinated with
LCLS. It will build 4 science instruments which
will occupy LCLS x-ray hutches. This will enable
work in three of the LCLS Science Thrust Areas
X-ray pump-probe dynamics, Coherent x-ray
imaging, and X-ray photon correlation
spectroscopy. The project is ramping up, with
major funding expected in FY2007.
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X-Ray Systems Status

• FY2006 is a design year
• XTOD designs are undergoing reviews now
• XES designs ready for review in a few months
• FY 2007 is a build year
• Ready for installation starting August 2007
• Ready for first light in Spring 2008

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Recent Events

• FAC Oct 2005 Recommendations
• Coordinate with experiment teams
• Make x-ray mirror design a priority
• Dont cut flipper mirrors or move FEH
• LCLS actions
• Coordinating with LUSI
• Mirror optics design underway
• Had to cut flipper mirrors and move FEH

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NEH
Hutch 1 9.5x10m
Hutch 2
Hutch 3
Flipper Mirrors
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Reduced scope FEH design
Entrance tunnel
single beamline
46ft tunnel
Hutch 4
Hutch 5
Hutch 6
19ft tunnel
212ft
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Other Cuts

• Some XTOD diagnostics
• Not needed for commissioning, expect to add as
  part of operations
• Some XES generic detectors
• Expect that LUSI will provide experiment-specific
  detectors
• XES support for generic computers for experiments
• Expect that LUSI will provide experiment-specific
  computers

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Other Developments for XTOD

• New Physics Liaison Peter Stefan
• Revised work plan incorporating cuts
• Designs moving through review stage

Gas attenuator prototype
Slits
Beam transport
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Other Developments for XES

• New hires
• John Bozek, AMO physicist
• Niels van Bakel, Detector physicist
• Revised work plan incorporating cuts
• 2d x-ray detector development program on schedule
• Working closely with upgraded LCLS Controls Group

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LUSI Progress

• Jerry Hastings is now Project Director
• Initial hiring taking place
• Nadine Kurita, Chief Engineer
• Bill Foyt, Project Manager
• Working closely with XES and XTOD groups to
  develop an optimal layout for experiments

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Better Beam-Splitting Plan

• LCLS and LUSI are working on an updated
  beam-splitting plan, and a way will be found to
  implement it
• This includes not only splitting of the beam to
  the FEH, but also splitting into a soft x-ray
  line and hard x-ray line in the NEH
• Will allow quicker changes between experiments
• Has become possible as experiment designs are
  beginning to crystallize

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NEH
AMO
X-ray pump-probe
SXR
soft x-ray line
hard x-ray line
Flipper Mirrors
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FEH
XPCS
Coherent x-ray imaging
High energy density science
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Summary

• Cuts have been made, but not too drastic
• Design effort underway
• LUSI is beginning to help