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SSR1 Cryomodule Development for PXIE Alignment and Cryogenics Status

SSR1 Cryomodule Development for PXIE Alignment and Cryogenics Status. T. Nicol January 17, 2012. Requirements from the functional requirements specification. WPM in ILC 1.3 GHz cryomodule. Commercial system www.on-trak.com. Design Pellicle beam splitters Position sensitive photodiode

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SSR1 Cryomodule Development for PXIE Alignment and Cryogenics Status

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  1. SSR1 Cryomodule Development for PXIEAlignment and Cryogenics Status T. Nicol January 17, 2012

  2. Requirements from the functionalrequirements specification

  3. WPM in ILC 1.3 GHz cryomodule

  4. Commercial systemwww.on-trak.com • Design • Pellicle beam splitters • Position sensitive photodiode • Advantages • Proven commercially available system • Range up to 300 m • Resolution down to 2 m possible • Disadvantages • Active electronics in cryomodules • Results • Pellicle beam splitter failed at LN2 temperature

  5. Second prototype • Design • Wire cross-hair target • Diffraction pattern used to identify beam center • Advantages • No active components • Radiation hard • Disadvantages • Beam center determination at long range? • Interference between multiple targets • Results • Excellent resolution and linearity over 1.5 m baseline (<6 m) • Uncertainties in scale

  6. Second prototype • Long term stability and target motion tracking • 8 m baseline • 7 targets • 2” aperture • Monitor temperature and humidity • Optical alignment possible with • 20 um resolution and linearity • baselines of 8m or more

  7. Wire grid

  8. Wire grid

  9. Wire grid

  10. Cryomodule assembly concept Heat exchanger and relief line Cryogenic feeds and controls Cavityvacuum pumpout Current lead assemblies RF input couplers Alignment viewports

  11. Cryogenics

  12. HW and SSR1 cryomoduleflow schematics Large bayonet

  13. SSR1 cryomodule flow schematic

  14. SSR1 heat load estimates

  15. Internal piping design in progress

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