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MuCool Beamline: Status

MuCool Beamline: Status. External Beams Dept. C. Johnstone, + others. Beam Extraction from Linac. Extraction to MTA Begins upstream and continues downstream of 400-MeV chopper to contain H - magnetic stripping losses to 10 -4 level. Extraction magnets:

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MuCool Beamline: Status

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  1. MuCool Beamline: Status External Beams Dept. C. Johnstone, + others

  2. Beam Extraction from Linac • Extraction to MTA • Begins upstream and continues downstream of 400-MeV chopper to contain H- magnetic stripping losses to 10-4 level. • Extraction magnets: • Identical “H” magnets (MI correctors) • Off-center operation in high-loss area (lambertson) • Minimal clearance past critical 400-MeV quadrupole (  0.5”) • Increased # of downstream dipoles plus off-center operation in congested, high-loss area of diagnostic/400-MeV line • 400-MeV vacuum interruption for installation/removal • ~ no cost advantage (no existing laminations, coils represent the bulk of the cost)

  3. Proposed Extraction Scheme • Two “C” magnets • One 3 magnet upstream and one 7.5 magnet downstream; single power supply for both • Aligned operation, maximal beam-stay clear • Improved clearance/conflicts with 400-MeV line • No vacuum interruption for installation/removal • DESIGN is complete; preliminary assembly drawings by E. Black

  4. Shutdown requests DONE • Fabricate beam pipes and short Linac BPM for Linac to chopper reconfiguration • Fabricate new end pieces for Chopper- eng. to be assigned • After Booster is operational and studies are completed during shutdown, install new Linac to chopper configuration including Q74 move and new BPM • Install new chopper flanges with gate value on downstream end to MTA – not scheduled at this time • Confirm operation of Booster with new Q74 location • Installation can now proceed without vacuum interruption to Linac or Booster cancelled pending

  5. View of quadrupole to be moved ~10’ upstream BLD – will be removed to make space for quad Quad to be moved

  6. Modifications to Chopper and its downstream endE. Black

  7. Beamline Design and Cost Status • Beamline and components are designed and costs known up to the needs of individual experiments • Experimental requirements and various options were under discussion but appear solved for Mucool + Muons Inc experiments. • Final power and water requirements for these two experiments have been resolved and costed since meeting with R. Dixon.

  8. Shielding Assessment Status • Shielding assessment documents complete for MuCool experiment and enclosure • Remaining calculations and documentation: • Linac shielding new assessment to include impact and details of the MuCool beamline – in progress • Duplicate all simulations and documentation for Rol’s experiment and enclosure requirements

  9. Beamline Details: • Extraction “C” magnet design • Beamline magnets

  10. C Magnet Specifications

  11. Lamination profile

  12. MTA BEAM HARWARE E.L. Black

  13. Notes on LEP Quadrupoles Bruce C. Brown Fermi National Accelerator Laboratory*P.O. Box 500 Batavia, Illinois 605101/9/2001 (Revised 9/24/2001)*Operated by the Universities Research Association under contract with the U.S.Department of Energy.

  14. 8” MT quadrupoles End of shield blocks to center, large beam region

  15. 8” MT quadrupoles 5” MQ quadrupole Center of “large-beam” to absorber

  16. 5” MQ quadrupoles 200-MeV quad Downstream end of shield blocks upstream to FODO channel

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