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New TT60 Beam Line for the LHC Phase II Collimation Project - First Ideas -

New TT60 Beam Line for the LHC Phase II Collimation Project - First Ideas -. Christoph Hessler TL Meeting 21.08.2008. Project Objectives. Facility to test: TCDS, TCDQ, TPSG Vacuum windows Collimators phase II (entire collimators and materials)

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New TT60 Beam Line for the LHC Phase II Collimation Project - First Ideas -

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  1. New TT60 Beam Line for the LHC Phase II Collimation Project- First Ideas - Christoph Hessler TL Meeting 21.08.2008

  2. Project Objectives Facility to test: • TCDS, TCDQ, TPSG • Vacuum windows • Collimators phase II (entire collimators and materials) • Beam instrumentation (screens, beam loss monitors) • Electronics • …

  3. Beam Parameters • Protons: • Beam energy: 450 GeV (or slightly different 445 GeV) • Pulse energy: up to 2.4 MJ • Bunch intensity: 5.0 · 109 to 1.15 · 1011 • Number of bunches: 1 – 288 • Bunch spacing: ~25 ns • Pulse length: ~ 7 ms • Beam size at target: variable around 1 mm2(Optics tunability: 1s r.m.s. from 0.5 mm - or below, 0.1 mm as suggested by R. Schmidt - to 2 mm?) and possibility to perform elliptical beam. • Heavy ions: • Beam energy: 177.4 GeV/nucleon (36.9 TeV per ion) • Pulse energy: up to 28 kJ • Pulse length: ~12 ms NOTE: present MKE PFNs are capable to extract 7 ms batch length, not 12 ms. To be studied. • Spot size: variable around 1 mm2

  4. Place of Installation SPS TI2 TT60

  5. Beam Line Layout • Basis: Layout of former TT60 beam line as used for T1 • Quadrupole strengths compatible with existing power converters:QTL: |K1| < 0.016 m-2QTR: |K1| < 0.028 m-2 MBB, MBE MBBT QTR QTL Target MBS switching magnets (no fast switching) End of common part with TI2

  6. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 2 mm Calculated values: sx = 1.99 sy = 2.00 ax = 0.00086 ay = -0.01525

  7. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 1 mm Calculated values: sx = 1.00 sy = 1.01 ax = -0.01367 ay = -0.00165

  8. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.5 mm Calculated values: sx = 0.496 sy = 0.499 ax = -0.00439 ay = 0.00696

  9. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.2 mm Calculated values: sx = 0.199 sy = 0.201 ax = -0.00412 ay = 0.02345

  10. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.1 mm Calculated values: sx = 0.100 sy = 0.102 ax = 0.00647 ay = 0.11982

  11. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 2 mm

  12. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 1 mm

  13. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.5 mm

  14. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.2 mm

  15. MADX Simulation Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, beam radius (1s): 0.1 mm

  16. MADX Simulation – Elliptical Beam Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, sx = 0.5 mm,sy = 1 mm Calculated values: sx = 0.497 sy = 1.003 ax = -0.02416 ay = 0.01209

  17. MADX Simulation – Elliptical Beam Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, sx = 1.0 mm,sy = 0.5 mm Calculated values: sx = 0.995 sy = 0.501 ax = -0.03621 ay = -0.01576

  18. MADX Simulation – Elliptical Beam Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, sx = 0.5 mm,sy = 1 mm

  19. MADX Simulation – Elliptical Beam Matching conditions: Initial twiss parameters from TI2 Target: ax = ay = 0, sx = 1.0 mm,sy = 0.5 mm

  20. Outlook • Optimization of beam line geometry to achieve a s of 0.1 mm:Additional space? Additional magnets? • Beam line design: • Switchyard • Beam line (aperture, trajectory correction, stability…) • Magnet specification • Vacuum system specification (chamber dimensions, pumping system) • Survival of exit window • Beam instrumentation requirements • Beam dump • SPS extraction system upgrades • Test set up (O. Aberle):Dimensions, remote handling, general services, beam instrumentation, shielding • Radiological impact – including impacts on ventilation, cooling… • Machine Protection interlocking system • Potential issue: T1 removal (target + shielding) – Residual activation and all RP issues. New space needed: where? How much space? • Propose 2 scenarios for this new beam line + test area: - Scenario 1: cheap (and probably dirty)- Scenario 2: more perfect option

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