TESLA Cryomodules

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TESLA Cryomodules

• T. Nicol Fermilab
• T. Page Fermilab
• J. Weisend II SLAC
• C. Pagani INFN / Milan
• tnicol_at_fnal.gov
• http//tdpc02.fnal.gov/nicol/tesla/index.html
• http//tdpc02.fnal.gov/nicol/photos/hardware/index
  .html

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TESLA cryostats, couplers, etc. at Fermilab

• Began attending collaboration meetings in 1992.
• First hardware was a HPP (High Power Processing)
  vertical test dewar for installation at Cornell
  in 1992.
• Two vertical dewars for HPP processing at DESY
  shipped in 1993 and 1994 and installed in Hall 3.
• TTF feedbox designed and built in TD lead by Tom
  Peterson.
• TTF warm-up heater designed and built by BD lead
  by Ron Walker.
• Support posts designed, fabricated, and tested
  for the first TTF cryomodules. Drawings provided
  for subsequent fabrication at INFN.
• Design and analysis support for baseline and
  alternate TTF cryostats.
• Several years of coupler design development lead
  by Mark Champion with support from TD / EFD
  Engineering Lab.

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Vertical test dewars for HPP
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Vertical test dewars for HPP
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Vertical test dewars for HPP
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Support posts
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Coupler development
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Coupler development
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Coupler development
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Coupler development
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Early cryostat concepts from DESY
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TTF cryomodule 1
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TTF cryomodules 2 and 3
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TTF cryomodules 4 through 8
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TTF cryomodules 4 through 8
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Alternate cryostat designs
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Alternate cryostat designs
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Alternate cryostat designs
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Production cryomodule main features

• Based on 3rd generation TTF cryomodule design,
  but 17 m as opposed to 12 m.
• 38 inch OD carbon steel vacuum vessel.
• Two thermal shields operating at 5-8 K and 40-80
  K.
• MLI on both shields, the cavity helium vessels,
  and the gas return pipe.
• Twelve 9-cell cavities, quadrupole, steering
  dipole, BPM.
• Magnetic shielding is integral to the cavity
  helium vessel.
• Cryogenic piping is integral to the cryomodule
  vessel.

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Production cryomodule configurations

• 1004 standard linac modules with 12 cavities
  (15.927 m long).
• 742 standard linac modules with an additional
  quadrupole and corrector coil package (16.728 m
  long).
• 27 cryomodules with 8 cavities and one quadrupole
  package for the FEL injector and positron
  pre-accelerator.
• 8 cryomodules with 4 cavities and 4 quadrupoles
  for the positron pre-accelerator.

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Production cryomodule conceptual layout
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Production cryomodule heat load estimates
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Production cryomodule quadrupole
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Production cryomodule prototype
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Production cryomodule prototype
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TDR Cost Estimate
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TDR Cost Estimate
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Cost exercise (very) preliminary results