JIRS Magnet Feasibility Study

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JIRS Magnet Feasibility Study
US LHC Accelerator Research Program
bnl - fnal- lbnl - slac
P. Wanderer LARP CM9 October 18, 2007
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JIRS task 3.3.2.2

• Magnet Feasibility Study
• Subtask 1 QA specifications, bench tests
• QA Phase I upgrade 2012
• Subtask 2 QB magnet design studies
• QB Phase II upgrade 2016
• Subtask 3 Slim magnets study design
  parameters, including type of superconductor
• Slim inside ATLAS, CMS Phase II - 2016

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Recent input

• Email from Steve Peggs, Oct. 10
• in yesterdays "extended PAF" meeting (Aymar,
  Garoby, Schmickler, Rossi, Evans, Bruning, )
  there was support from the top down, including
  Lyn, for Lucio's proposal for the U.S. to build 5
  Nb3Sn Q1 quads (includes 1 spare) for the Phase 1
  upgrade.

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Budget allocation

• Total 80k ( ¼ FTE 440 hours)
• QA 60k (in view of PAF meeting)
• QB 10k
• Slim 10k

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QA concept

• Install Nb3Sn quad in an accelerator (e.g.,
  Tevatron, RHIC, LHC) or beamline to judge
  performance in real world situation (lifetime
  test, radiation heating, radiation damage)

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If QA ? Q1 for Phase I

• FY08 Q1 objectives
• Establish who does what e.g., US provides
  cold mass, CERN the cryostat
• Establish list of critical parameters length,
  gradient, aperture (gtQ1),
• Establish list of needs for new conductor
  (strand, cable), hardware,
• FY08 Q2 objectives
• Establish values for the above (by 1/31?)

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If QA ? Q1 for Phase I

• FY08 Q3 objective
• Conceptual Design Report (present draft at DOE
  annual review, June 08)
• FY08 Q4 objective
• Establish resources needed for Preliminary Design
  Report, begin work on report

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QB Phase II - 2016

• Determine QB parameter space
• FY08 Q1 objectives
• Establish list of people working on the task
• List magnet parameters, design constraints
• FY08 Q2 objective
• Establish values for design constraints or
  estimates when values will be available
• Draft intro to magnet design for non-experts

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QB Phase II - 2016

• FY08 Q3 objectives
• Discuss constraints with other task groups via
  video and at CM10
• Iterate intro to design document
• FY08 Q4 objective
• Prepare initial report jointly with other JIRS
  tasks

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Slim magnets - 2016

• Are the slim magnet meetings with
  AT/AB/ATLAS/CMS continuing?
• FY08 Q1 objective
• Establish task force members, CERN contacts,
  develop status report
• FY08 Q2 objective
• Prepare list of interface parameters (e.g.,
  allowed fringe field on detectors required
  spatial stability of magnets)

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Slim magnets - 2016

• FY08 Q3 objective
• Prepare constraints, based on interface parameter
  list
• Establish constraints, based on different
  superconducting materials (NbTi, Nb3Sn, HTS)
• FY08 Q4 objective
• Select superconductor(s)
• Write report

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Summary

• Task interacts with several other
  disciplines/tasks in LARP and at CERN
• QA Rapid action needed for QA Q1 Phase I
• QB and slim magnets longer time frame -- need
  experience with machine, detectors to settle
  parameters