LARP Magnet Program Steve Gourlay

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LARP Magnet Program Steve Gourlay
Directives Program Goals, Priorities Implementat
ion - Management FY05 Summary FY06
Plans Summary Issues and Challenges
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Directives

• DOE Guidance
• It is our firm intention that the LARP
  activities serve to explore the limits of the
  technologies described herein. While the end
  products of LARP will be applied to the LHC, LARP
  is not intended to be an engineering or
  construction service organization to that
  facility.
• The LARP is not intended to replace existing
  base program support at the various laboratories
  in superconducting magnet development and other
  ongoing areas.

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Directives

• CERN Guidance Letter from Lucio Rossi (CERN
  representative)
• We strongly believe that the major steps in the
  near term are
• Construction of a quadrupole model, full
  cross-section, with parameters that are really
• significant for the LHC upgrade  G ? 250 T/m , ?
  ? 90 mm (of course the larger the
• better).
• Construction of simple systems that may address
  the long magnets issues.
• The manufacturing of a successful prototype for
  2009 is real vital to the whole magnet
• program, on both side of the Atlantic. Year 2009
  is crucial since, according to the today
• plan set by the CERN DG, is when basic decisions
  on CERN future large projects will be
• taken . . .

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Nb3Sn technology - appears to be the only
candidate for a substantial improvement - could
open upgrade scenarios such as 'dipole-first' Im
portant issues related to long Nb3Sn magnets need
to be addressed by vigorous RD The effective
Nb3Sn filament diameter (gt100 ?) is too large
(Material development required.) The choice of
the coil aperture is driven more by the power
density limit than by the beam acceptance An
estimate of the radiation parameters of the
magnets requires extensive simulations based on
detailed knowledge
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Gradient As a Function of Bore Size
Current LHC
mm
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Magnet Program Goals

• Provide options for future upgrades of the LHC
  Interaction Regions
• Demonstrate by 2009 that Nb3Sn magnets are a
  viable choice for an LHC IR upgrade
• (Developed in consultation with CERN and LAPAC)
• Focus on major issues consistency, bore/gradient
  (field) and length

1.

• Predictable and reproducible performance
• TQ models (1 m, 90 mm aperture, Gnom gt 200 T/m,
  Bcoil gt 12 T)
• Long magnet fabrication
• LQ models (4 m, 90 mm aperture, Gnom gt 200 T/m,
  Bcoil gt 12 T)
• High gradient in large aperture
• HQ models (1 m, 90 mm aperture, Gnom gt
  250 T/m, Bcoil gt 15 T)

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Target Program
Provides basis of many other options, but budget
is limited
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Program Components

• Focus on main goals
• Scale-up via simple models (CERN and LAPAC
  guidance)
• Large aperture quadrupoles
• Increase gradient/aperture
• Develop a collaborative infrastructure
• Individuals at each lab are committed to success
• Distribute tasks according to lab strengths
• Initial emphasis on developing technical
  capabilities tech transfer
• Investment for the future

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Program Implementation

• Model Magnets
• Technology Quadrupoles (TQ)
• Support structure development
• Reproducibility
• Field quality not a priority
• Supporting RD
• Long Racetrack coils (LR)
• Fast start, early feedback
• Practice coils (PC)
• Long cosq
• Defer due to budget/TQ results

• Materials Support
• Strand and cable evaluation
• Provide engineering material
• Long-term RD
• Design Studies
• Emphasize support of TQs
• Diversity to guide program and provide options
• Early effort to integrate labs
• Distribute expertise
• Develop collaborative program

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Management Structure
Magnet Steering Committee
Test Integration Group
Magnet Steering Committee (MSC) Define program,
identify tasks and assign task managers Lab
Representatives G. Sabbi, P. Wanderer, A.
Zlobin Lab Management Representatives S.
Gourlay, M. Harrison, R. Stanek
Lab representatives oversee tasks/sub-tasks at
host laboratory
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Process

• Start with overall program and goals
• CERN input
• DOE input
• MSC input
• L2s and task managers assemble tasks to
  implement program
• Gourlay/MSC
• Prioritize
• Budget guidance
• Assign tasks to appropriate organization
• Normalize effort, identify specific individuals
  for tasks
• Develop bottoms-up budget and resource-loaded
  schedule
• Adjust scope to fit according to priorities

Budget Resources LARP and Core Programs
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FY05 Program

• Great start
• Established ambitious but realistic program
• Excellent work by many people exceeds
  expectations based on 1.1M budget
• One major adjustment based on CERN input
• Dipole effort at BNL diverted to long magnet
  scale-up
• Based on small racetrack coil technology
  successfully implemented at LBNL and FNAL

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FY05 Highlights

• Technology Quads (TQ)
• Practice coil winding has begun
• Production cable runs this month
• Test Integration Group
• Already organizing and developing test standards
• No FY05 budget
• First quad (SQ-01) completed in FY04 and retested
  in FY05
• LBNL-built, retested at FNAL

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Sub-scale Magnet Series
SC Coil
SM Dipole
SQ Quadrupole

• Cost-effective, rapid turn-around tools for
  technology development
• RD topics conductor, cable, mechanics,
  materials, fabrication procedures
• Two-layer SC racetrack coils field range of
  9-12 Tesla fully instrumented
• Testing in both dipole (SM) and quadrupole (SQ)
  configurations

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Subscale Quad SQ01/SQ01b

• Nb3Sn, 110 mm aperture, Bmax gt11 T
• Test at LBNL 92 of short sample
• Analysis, disassembly inspection
• Reassembly w/higher preload
• Second Test at FNAL (SQ01b)

Axial support
Yoke-shell alignment
Yoke-pad alignment
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FY05 Tasks Design Studies

• - A. Zlobin
• Quadrupole
• Shell vs Block P. Ferracin
• Shell mechanical design study G. Ambrosio
• Separation Dipole
• D1 Design R. Gupta
• D1 cooling study T. Peterson
• Cryogenics
• IR Cryogenics Study R. Rabel

Significantly reduced effort moved to long
magnet scale-up
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FY05 Tasks - Materials

• - A. Ghosh
• Strand RD
• Heat treat studies/strand characterization
• Extracted strand studies in support of cable work
• Cable RD
• 1.00 and 1.30 keystone cable for TQs
• Conductor Procurement

• Close ties with DOE Conductor Development Program
• CDP has been instrumental in getting LARP started
• High performance material
• 100k contribution in FY05
• Must maintain a strong program
• Continued development for long term needs
• Maintain viable sources

Two distinct contributions Focused support of
model magnet program RD to provide ultimate
material
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FY05 Tasks Supporting RD

• - G. Ambrosio
• Sub-scale Quadrupole reassembly and test (SQ-01b)
  completed
• Subscale Quadrupole SQ-02
• Long magnet scale-up
• Prepare for rapid turn-on in 06
• Subscale dipole - discontinued

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FY05 Tasks Model Magnet RD

• - G.Sabbi
• TQ (Technology Quadrupole)
• Emphasis on quench performance, fabrication
  techniques, support structure
• 1 m length
• 90 mm aperture
• 2-layer coil
• gt 200 T/m
• Merge core program experience
• Distribute tasks
• Exchange/improve fabrication techniques
• Develop analysis approach

• Main Issues
• Support structure
• - Key and bladder (TQ1) vs collared (TQ2)
• - Approach to coil support

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• FY06 Program

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Design Studies

• - A. Zlobin
• Reorganize in FY06
• IR Magnets
• Magnetic design and analysis
• Mechanical design and analysis
• Thermal analysis
• Quench protection analysis
• Test data analysis
• Integrate with AP and LARP magnet tasks
• Cryogenics
• IR cryogenics and heat transfer studies
• Radiation heat deposition
• Cryostat quench protection

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Materials

• - A. Ghosh
• Priority on providing support for magnet
  development
• Conductor Procurement
• Strand evaluation
• Cable fabrication and RD
• Should be healthy enough to support work for
  future needs

Coordinate with DOE Conductor Development Program
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Supporting RD

• - G. Ambrosio
• Main emphasis is long magnet scale-up via
  sub-scale coils
• Coil test by end of FY06
• Shell-based support structure scale-up
• Implications for long term
• Associated Tasks
• Oven procurement and installation
• Fixturing and tooling
• Support structure design and fabrication
• Other tasks
• Rad hard materials - 59k, plus core program
  support of student
• Materials evaluation
• Sub-scale studies

Target
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Model Magnet RD

• - G.L. Sabbi
• Main program focus (Technology Quadrupoles)
• 2-Layer quads, 90 mm aperture, G gt 200 T/m ASAP
• Considerations
• Design approach end loading options, preload
• Fabrication techniques
• Structure options TQS, TQC

Convergence through working groups and internal
reviews
Opportunity to arrive at best-of-the-best and
increase confidence in modeling
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Test Integration Group

• S. Feher (FNAL) Leader
• A. Lietzke (LBNL)
• J. Muratore (BNL)
• Coordinate test-relate tasks between labs, reduce
  overall costs
• Define test goals
• Data format and exchange
• Normalize effort and establish costs

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Current Budget
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Budget Comparison
Move TQC tests to FNAL and revise estimates
Eliminate HQ start in FY06
Defer cos2q practice coil to FY07. Allow FNAL to
follow effort on LR at BNL
Decrease Test Integration effort
Reduced PM
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90 Scenario

• Program is already focused and aggressive
• Goal is well-defined in terms of schedule and
  deliverables
• Opt to maintain the goals and assume the increase
  in risk
• 10 cut is 565k
• I would propose to

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Major Milestones
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Core Program Relevance

• A critical mass sufficient to support the LARP
  goals requires participation of the core programs
• Supports team with a broad range of talents
• Provides resource contingency, infrastructure
• Full FTE capture mutually beneficial
• Provides diversity for an evolving technology
• Development of engineering tools
• Conductor development
• Adds breadth, depth allows risks

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Challenges

• Adjust scope to fit budget can we still
  achieve goals?
• This is a plan for success
• Budget reductions lead to increased risk
• Can we collaborate at the level necessary for
  success?
• Increase travel and inter-lab participation in
  tasks
• Move quickly to converge on technical approach
• Support structures and methods
• Fabrication techniques
• High priority on long magnet scale-up - budget
• Materials characterization and magnet performance
• Adequate supply of usable conductor
• Impact of long-term institutional interests and
  program priorities
• Core program vs LARP

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Summary

• LARP is a unique opportunity to expand the HEP
  technology base
• We have an aggressive, focused program to
  implement well-defined goals
• Progress on all fronts
• LARP and Core programs are complementary
• End result is a stronger, coordinated DOE RD
  program
• Issues
• Budget
• Quantitative commitment of core program support