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Studies on IDS FFAGs for muon acceleration J. Pasternak Imperial College, London / RAL STFC

Studies on IDS FFAGs for muon acceleration J. Pasternak Imperial College, London / RAL STFC. Introduction. IDS FFAGs design. Beam dynamics in FODO. Extraction from FODO. Summary and future plans. Introduction. Motivations for Non Scaling FFAGs as muon accelerators:

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Studies on IDS FFAGs for muon acceleration J. Pasternak Imperial College, London / RAL STFC

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  1. Studies on IDS FFAGs for muon acceleration J. Pasternak Imperial College, London / RAL STFC J. Pasternak

  2. Introduction. • IDS FFAGs design. • Beam dynamics in FODO. • Extraction from FODO. • Summary and future plans. J. Pasternak

  3. Introduction • Motivations for Non Scaling FFAGs as muon accelerators: • quasi-isochronous –enables high frequency RF • linear fields – gives huge DA and allows for simple magnets • small orbit excursion – cost effective • Main problems: • TOF with amplitude • beam loading • injection/extraction J. Pasternak

  4. IDS designs by J. Scott Berg J. Pasternak

  5. Scott’s FODO lqf lqd thd/2 (angle) D,+ dxf dxd F,- thf/2 (angle) b0f, b1f b0d, b1d J. Pasternak

  6. „Beam dynamics” parameters for Scott’s FODO n = 62 lqd = +1.255078842410132e+00 m thd = +1.323879221148701e-01rad dxd = +4.339302619854590e-02 m b0d = +6.126945774986365e+00 T b1d = -1.575255389834323e+01 T/m lqf = +2.196536396904703e+00 m thf = -3.104622361197353e-02 rad dxf = -1.997905318237929e-03 m b0f = -8.389803803309219e-01 T b1f = +1.220241142896484e+01 T/m Ldrift = 2 m J. Pasternak

  7. Beam dynamics in FODO Qx, Qy E, GeV J. Pasternak

  8. Beam dynamics (2) T, ns E, GeV J. Pasternak

  9. Beam dynamics (3) Orbit in D magnet, m E, GeV J. Pasternak

  10. Beam dynamics (4) x’, rad x, m y’, rad y, m J. Pasternak

  11. Extraction – first scheme D F D D K3 S K1 K2 K1,K2,K3 - 0.5 T S -1T J. Pasternak

  12. Extraction – first scheme with 4 T septum D J. Pasternak

  13. Extraction – second scheme D F D K1 K2 K3 S K1,K2,K3 - 0.5 T S -1T J. Pasternak

  14. Extraction – second scheme with 4 T septum J. Pasternak

  15. Summary and future plans • Beam dynamics in Scott’s FODO has been studied • with good results. • Extraction looks not impossible! • Other lattices have to be studied • Crosscheck with other codes is needed. • Acceleration simulations have to be performed. • More detailed study of injection/extraction • – work in progress. J. Pasternak

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