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Diagnostics and Common Optics LUSI WBS 1.5

Diagnostics and Common Optics LUSI WBS 1.5. David FRITZ Instrument Scientist April 20-22, 2009. Outline. DCO Overview Component Description Interfaces Integration Commonality & Value Engineering Summary. DCO Overview.

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Diagnostics and Common Optics LUSI WBS 1.5

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  1. Diagnostics and Common OpticsLUSI WBS 1.5 David FRITZ Instrument Scientist April 20-22, 2009

  2. Outline DCO Overview Component Description Interfaces Integration Commonality & Value Engineering Summary

  3. DCO Overview • X-ray optics and diagnostics are needed to tailor and characterize the FEL for experiments • The instruments have common needs: • Characterize and control the spatial profile • Characterize and control the pulse energy • Control the pulse train repetition rate • Control the spectrum • Diagnostics and optics were identified to address the needs: • Profile-intensity monitor (WBS 1.5.2.1 & 1.5.2.2) • Intensity-position monitor (WBS 1.5.2.3) • X-ray lenses (WBS 1.5.3.2) • Slits (WBS 1.5.3.3) • Attenuators (WBS 1.5.3.4) • Pulse picker (WBS 1.5.3.5) • Harmonic rejection mirror system (WBS 1.5.3.6) • The DCO WBS was created to deliver these common needs in a value effective manner

  4. Component Description Task: Diagnostic: Goals: Characterize spatial profile Profile-intensity monitor (WBS 1.5.2.1 & 1.5.2.2) 4 micron spatial resolution (1 mm FOV) 50 micron spatial resolution (12 mm FOV)

  5. Component Description Task: Diagnostic: Goals: Non-invasively characterize pulse energy and beam position Intensity-position monitor (WBS 1.5.2.3) Transmission > 95% < 0.1% relative accuracy (pulse energy) < 10 micron relative accuracy (position)

  6. Component Description Characterize pulse energy Profile-intensity monitor (WBS 1.5.2.1 & 1.5.2.2) < 1% relative accuracy Task: Diagnostic: Goals:

  7. Component Description Task: Diagnostic: Goals: Tailor x-ray spatial profile X-ray focusing lenses (WBS 1.5.3.2) < 2 micron position repeatability (X & Y) Accommodate 3 lens stacks

  8. Component Description Tailor x-ray spatial profile Slits (WBS 1.5.3.3) 1 micron position repeatability Minimize parasitic scatter Task: Diagnostic: Goals:

  9. Component Description Tailor x-ray spatial profile Attenuators (WBS 1.5.3.4) > 2 steps be decade attenuation > 5 keV > 1012 attenuation @ 8 keV, 104 @ 25 keV Minimize wavefront distortion Task: Diagnostic: Goals:

  10. Component Description Task: Diagnostic: Goals: Tailor pulse repetition rate Pulse picker (WBS 1.5.3.5) Isolate single pulse from 120 Hz train Operate up to 10 Hz

  11. Component Description Task: Diagnostic: Goals: Tailor spectrum (isolate fundamental) Harmonic rejection mirrors (WBS 1.5.3.6) Reject 3rd harmonic radiation Minimize wavefront distortion A B C

  12. Interfaces • DCO to instrument supports (SP-391-001-45) • Standardized bolt pattern on instrument supports • Two DCO device beam heights accommodated (10” and 16”)

  13. Spatial Constraints • The spatial boundary conditions were analyzed for all instruments • Goal to minimize longitudinal dimension without compromising convenience, budget, functionality or flexibility • Transverse boundary conditions • 600 mm beamline offset between CXI and XCS • NEH and FEH hutch walls • MEC 2.8 mrad beamline • Using the bounding box below: • Components can be placed side-by-side in XPP with no interference • Components can be placed side by side in XCS with no interference • Components can be placed side by side in Hutch 4, Hutch 5 with no interference • Components can be staggered for CXI and MEC for 50% of the XRT (>100 m)

  14. Component Commonality Profile-Intensity Monitor X-ray Focusing Lenses Intensity-Position Monitor • Alignment stand • IPM, PIM, X-ray Focusing Lenses, Attenuator/Pulse Picker • Similar vacuum chambers • IPM, PIM, X-ray Focusing Lenses • Y and XY actuators • IPM, PIM, X-ray Focusing Lenses, Pulse Picker

  15. Similarity to Existing Components • Many electron beam and FEE components have similar performance requirements • OTR and YAG screens • Wire scanners and collimators • 6 degree of freedom alignment stand • These components are commissioned and meet specifications • However, the packaging of existing components does not meet LUSI needs • The DCO team modified existing designs wherever applicable • Technical risk is low, but meeting specifications isn’t trivial • 1st articles components are being fabricated and will be thoroughly tested LCLS Alignment Stand LCLS Y Collimator LCLS OTR Optics

  16. Summary • Component designs have advanced significantly from CD-2 • Global integration and interface issues are well understood • This could be accomplished since instrument and FEH hutch designs are advanced • Value engineering practices were performed • Grouping of components • Standardization • DCO Components have low technical risk • Re-packaging of existing components and proven concepts • Designs are advanced and at a CD-3 level of maturity • 1st articles are in fabrication

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