LCLS Photon Systems Status

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LCLS Photon Systems Status
John Arthur SLAC
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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 (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
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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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LCLS Designs are maturing

• FEE instrumentation at concept review stage
• Conventional facilities at Title 2 stage

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FEE
7 ft Fe
4 ft Fe
3 ft concrete
Mirrors
GAS ATTEN
COLLIM
STOP
STOP
SOLID ATTEN
32 m
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NEH
Hutch 1 9.5x10m
Hutch 2
Hutch 3
Flipper Mirrors
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Entrance 19ft tunnel (450 ft long)
FEH
Fire door
Fire door
15x25ft control cabin
46ft tunnel
6ft
10ft
28x33ft hutch
10ft
29x33ft hutch
36x33ft hutch
10ft
Toilets
19ft tunnel
212ft
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Building up the X-Ray Systems

• XTOD group has about 20 people now
• XES has 1 person and 2 openings
• LUSI has 5 openings now, more soon
• 2 other x-ray related hires at LCLS, 1 opening

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LCLS CE costs are expected to be high

• May will need to cut some scope
• Need to prioritize possible cuts

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Possible Scope Reductions

• Eliminate flipper mirrors (1M)
• Reduce length of x-ray transport tunnel by 10
  (20m, 0.5M)

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Reduced scope FEH design
Entrance 14ft tunnel
hutch extended
single beamline
46ft tunnel
28x33ft hutch
29x33ft hutch
36x33ft hutch
30ft transition
20ft tunnel
212ft
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Effects of reductions

• No flipper mirrors beamline shared in FEH
• Shorter tunnel side beams closer to each other
  by 10 (1.8m vs 2m)

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Summary

• Major staff increase ongoing
• Experimental needs coming into focus
• Need to consider possible scope cuts to save