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Feasibility Study of BS Magnets Vacuum Chambers

This study explores the challenges and solutions for BS magnet vacuum chambers, covering issues like access chamfers, space constraints, welding methods, and optimizing chamber materials for beam dynamics. Considerations for ceramic chambers and their impact on performance and procurement are discussed.

latifah-riley
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Feasibility Study of BS Magnets Vacuum Chambers

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  1. Feasibility Study of BS Magnets Vacuum Chambers W. Weterings

  2. Inside vacuum proposal fromprevious meeting • Chamfer for access • No Space for PSB • Down-Stream bellow • Recess flanges

  3. Flange bolted on tank not desirable • In-situ welding • compact “welded Bellows” • no space for QD flanges • Bolted Flange on tank

  4. New proposal with DN135 QD Flanges • Chamfer for access • No Space for PSB • Down-Stream bellow • Recess flanges

  5. No In-situ welding • DN135 QD flanges • But still issue of Bake-out & maintenance

  6. Initial design of BS Magnets withundulated Inconel chambers

  7. Conclusion PSB beam dynamics WG meeting on 19th November: • Eddy current effects in corrugated INCONEL chamber during (5ms) chicane fall an issue • Make sure that delays between different BS magnets are not too different • Sextupolarcomponents not an issue!! • Perturbation due to quadrupolar components by feed‐down • Sizable (a bit smaller than edge focusing by BS magnets) • Should be taken into account for compensation (in particular for injections with the vertical tune above the half‐integer resonance) • ProbabIynot (yet?) the end for BS magnets around • corrugated chambers … can one improve the situation? • What about ceramic vacuum chambers (see discussion with • J. Borburgh)?

  8. BS magnets with ceramicchambers - 1 BS1 BS2-3 BS4

  9. BS magnets with ceramic chambers - 2

  10. BS magnets with ceramic chambers - 3

  11. BS magnets with ceramic chambers - 4 Possible Solution

  12. Conclusion • Inside Vacuum Tanks • Feasible, but…. • Large bulky tanks • Bake-out required • Intervention difficult and time-consuming • Undulated Inconel Chambers • Feasible, but…. • Eddy current effects • Optics perturbations • Ceramic Chambers • Feasible, but…. • Aperture restrictions for BS1 • Procurement / Price of ceramic chambers • Fragile

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