Main Linac R

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• Main Linac RD at Fermilab
• Presented to the MAC at SLAC
• October 4, 2000
• David Finley

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Main Linac RD at Fermilab Presented in other
talks.

• Accelerator Physics and Design
• - T. Raubenheimer
• Design and RD on Permanent Magnets
• - J. Volk
• Conventional Facilities Design and Issues -
• V. Kuchler/J. Ives
• Engineering Test Facility Update
• - P. Czarapata

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RF Structures Factory Context and Purposes

• This is essentially the same plan that was
  presented at the 5/00 NLC Collaboration meeting
  at Fermilab.
• It was refined and put into a proposal to
  Fermilab management on 6/23/00.
• Two Purposes in support of LC RD
• build and demonstrate the technical feasibility
  of multiple structures (same as converge on a
  finaldesign)
• develop the route to mass-produced structures
  along with determining their final cost.

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RF Structure Factory/Lab Elements

• Seven Elements
• RF Design
• Produce Copper / Machine Copper Parts
• RF Measurements Development / Low Power
• Joining Parts into Structures / Vacuum
• Mechanical Measurements of Straightness
• Brazing / Bonding Facility
• High Power Processing

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RF Structures Factory/LabHow It Fits In

• In The Near Term The RF Structures Factory is
  the means by which the collaboration converges on
  a final rf structure design.
• Longer Term It is the means by which a
  defensible cost estimate can be made for the rf
  strukctures.

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RF Structures Factory/LabGoals and Hopes

• The intermediate goal of the two year 6/23/00
  plan is to enable the NLC collaboration to make
  at least 3 full-size rf structures per year of
  different types.
• A large part of the infrastructure to do this is
  built at Fermilab although industrialization is
  still the final goal.
• Existing expertise / infrastructure will
  (obviously) continue to be used where sensible.
• Producing (24 or so) structures for the ETF is
  (hopefully) industry-based.
• Need a better name than Factory.

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RF Structures FactoryStrategy

• RD Users of Structures
• Fast enough turn around time to allow development
  of several structure types with integration of
  test results back into the design (3 to 12 in one
  year)
• ETF (12 or more in one year)
• RD and Industry
• Develop sufficient structures to provide an
  adequate statistical basis for determining
  quality structure fabrication methods for mass
  production

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RF Structure Factory/Lab Evolution

• The technology has to be developed by the
  collaboration and then transferred to industry.
  Right now not enough structures have been built
  and successfully tested at full power.
• The final goal is to get all this into industry,
  other than the final quality control which
  includes
• vacuum certification
• straightness certification
• rf certification
• and maybe the assembly of a complete beam line
  element.

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The 8/12/00 Plan(s)

• Plan I and Plan II
• Only includes FY01with a few details
• Include structures as well as magnets
• Integrates Beams and Technical Division resources
• Plan I
• Uses only most of 4M and (in my opinion) can
  probably be done given sufficient priority at
  Fermilab
• Plan II (same as 6/23/00)
• aka the full Holtkamp plan
• Uses almost all of 4M and would likely require
  negotiations outside Fermilab.

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Overall Reaction to the 8/12/00 PlanPrepare to
Implement Plan I.

• Money
• Act like 2.35M (including GA) of NLC RD money
  will be found for the RF factory/lab in FY01.
• People
• Not enough available now at Fermilab.
• Need about 12 FTE by end of FY01.
• Space
• Existing TD space soon to be inadequate
• Evaluating existing surface buildings.
• Other
• Consolidate all LC in one space?

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FY01 TD NLC Planning

• Big Picture
• RF Structures, Magnets, Beamline Unit
• TD, BD, NLC Collaboration, Others
• Flat-flat, FY01 (2 to 3) x FY00, More
• 8/31/00 FY01 only (and no schedule)
• Recent Plans
• March 3, 2000 TD WPAS
• May 31, 2000 Collaboration Meeting
• June 21/23, 2000 RF Structure Factory Plan
• August 10, 2000 Flat-flat (A and B)
• August 12, 2000 TD NLC FY01 (I and II)
• August 30, 2000 TD Budget Presented
• August 31, 2000 Permanent Magnets
• September 21, 2000 BD Budget Presented

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Background to FY01 Planning

• Situation as of 8/15/00
• By the end of FY00 enough copper material and
  permanent magnet material will have been ordered
  so that we have the option of fabricating things
  in FY01.
• Two small teams are functional, and TD NLC RD
  salaries for the most recent quarter (May to July
  2000) would correspond to an annual salary budget
  of about 540K in FY01.
• In the Plans major equipment purchases (over
  25K) are tracked in addition to the two existing
  TD NLC budget codes (MAT and RAT).
• Industrial Building 4 is the home base for
  structures work in Plan I.
• 550K TD FY00 Cost (Estimate 9/8/00)
• 340K Salaries
• 150K Copper and magnet materials, rf lab
  equipment purchases
• 60K other (including travel)

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FY01 TD NLC Plans I and II(August 12, 2000 Plan)

• There are two proposals (Plan I and Plan II) both
  of which expand on the NLC RD work begun in FY00
  and supported by the Fermilab Technical Division.
• Plan I represents a moderate increase in staff
  above the most recent quarters effort, and Plan
  II is a more aggressive plan.
• NOTE PLAN II is consistent with accomplishing
  the 2 year goals given in the 6/23/00 RF
  Structures Factory Plan.
• Each plan begins the establishment of an RF
  Structure RD Factory under Fermilabs
  leadership, and each plan continues research on
  magnets for the main linacs based on the use of
  permanent magnet materials.
• Each plan requires seamless coordination of
  support from both the Technical and Beams
  Divisions, and each plan is to be coordinated
  with the NLC collaboration.

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FY01 TD NLC - Global Goals (August 12, 2000 Plan)

• Plan I
• Nourish the NLC collaboration, and build up and
  educate Fermilabs part of the team
• Develop a strategy for establishing homes for all
  seven elements of the structures factory
• Plan II (In addition to Plan I Goals)
• Begin design of main linac basic beamline unit
  (three RF structures, support girder, magnet
  support, motion control, vacuum, alignment, etc)

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FY01 TD NLC - Magnet Goals(August 12, 2000 Plan)

• Plan I
• Finish the fabrication of the four different
  magnet prototypes and look for the motions of the
  magnetic centers with (mostly) existing equipment
• Plan II (In addition to Plan I Goals)
• Establish a research project to measure the
  movement of the magnetic center of quadrupoles to
  better than 1 micron
• Make and measure enough permanent magnet
  prototypes to choose a preferred design

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FY01 TD NLC - Structures Goals (August 12, 2000
Plan)

• Plan I
• Produce more than one hundred high quality
  machined RF disks based on present SLAC designs,
  and use them for parametric studies to learn how
  to adequately join disks into structures
• Establish a complete RF measurement lab to begin
  to learn how to do QC (Quality Control) on disks
  and structures
• Produce several dozen disks for the
  collaborations ongoing high gradient tests
• Initiate effort on the design of moderately
  damped structures and produce a few disks to be
  used for RF QC and mechanical testing
• Use existing equipment (mostly) for mechanical
  measurements and analysis of disks

Note Need furnace to do this
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FY01 TD NLC Structures Goals (August 12, 2000
Plan)

• Plan II (In addition to Plan I Goals)
• Establish mechanical measurement capabilities
  based on ultra-sensitive tactile coordinate
  measurement machines as well as optical
  measurement machines
• Make couplers and other devices needed to
  fabricate a complete structure
• Begin plans for automation of RF QC

Find this in industry?
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RF Structure Factory 2 Year Goals for Fermilab
(6/23/00 Plan)

• Goals for Seven Elements
• x means some progress planned in FY01
• 1. RF Design
• x Catch up with SLAC / KEK on RDDS
• x Copy/develop moderately / heavily damped design
• 2. Fabrication of Cells
• x at least 200 cells in one year (maybe more than
  1000)
• 3. RF Measurements
• x Setup RF lab
• x Determine Quality Control Measures

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RF Structure Factory 2 Year Goals for Fermilab
(6/23/00 Plan)

• Goals for Seven Elements (cont)
• x means some progress planned in FY01
• 4. Mechanical Measurements
• x Identify company for 3D measurements
• Develop measurement system for one structure
• 5. Assembly of Cells into Structures
• x Catch up with RDDS techniques
• RGA (1E-10) capability
• Acquire adequate vacuum equipment
• 6. Fabrication of Complete Structures
• x At least one oven operating
• 7. High Power Processing
• Build / acquire power source / pulse compression

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FY01 TD NLC Plan Summary (August 12, 2000 Plan)

• Plan I
• 12.65 FTEs (_at_100K / FTE)
• 629K MS
• 1.894M Subtotal FY01 NLC RD
• 845K Other Fermilab
• 2.739M Total Fermilab
• Plan II
• 17.7 FTEs (_at_100K / FTE)
• 834K MS
• 2.604M Subtotal FY01 NLC RD
• 985K Other Fermilab
• 3.589MTotal Fermilab

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RF Structure Factory Resources(Reminder 6/23/00
Plan)

• Budget and Staff

FY02 will be more than FY01 ...
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RF Structure Factory/Lab and Magnets Summary

• Act Like ITS A GO! on Plan I.
• More than 2M in FY01
• (Compared to 550K in FY00)
• Fermilab still has a lot to do before becoming
  serious contributors to real rf structures for
  the collaboration.
• Eventually enough statistics for "good
  structures and fabrication methods will be
  available because approximately 10-15 structures
  / year need to be built.
• This facility could allow equipping a significant
  fraction of the ETF if there is a problem with
  industrialization. But, as time passes, more and
  more must be done by industry.
• Magnet progress is hopeful. (see J. Volk.)

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Main Linac RD at Fermilab Summary

• Still Lots of RD to do.
• Be prepared to spend 4M for Main Linac RD at
  Fermilab in FY01.

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Backup Slides

• In Case Details are needed ...

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Details FY01 TD NLC Plan I (August 12, 2000
Plan)
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Details TD NLC FTE FY01 Baseline (August 12,
2000 Plan)
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Details FY01 TD NLC Plan I FTEs (August 12,
2000 Plan)
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Details FY01 TD NLC Plan I MS (August 12, 2000
Plan)
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Details FY01 TD NLC Plan I Other (August 12,
2000 Plan)
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Details FY01 TD NLC Plan II (August 12, 2000
Plan)
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Details FY01 TD NLC Plan II FTEs (August 12,
2000 Plan)
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Details FY01 TD NLC Plan II MS (August 12,
2000 Plan)
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Details FY01 TD NLC Plan II Add On (August 12,
2000 Plan)