Injection foils and handling system Followup Review on

Injection foils and handling system Follow-up Review on PSB 160 Me. V H- Injection 20 Mars 2011 W. Weterings C. Boucly, J. Hansen, R. Noulibos, Y. Sillanoli

Outline • • Space Limitation Advantages shorter PSB dipoles Possible solution for integrating sector valves Other Actions – Technical feasibility of ceramic chambers. – Repetitive movement tests foil changer – Investigate possibility changing single foils • Progress & Objectives • Conclusion 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 2

Space limitation - 1 Present. Situation Future Situation ~20 cm 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 3

Space limitation - 2 • Obstruction of the outside PSB passage. • Limited space for removal of complete foil mechanism. • Possibility to remove part of the wall to be discussed. ~20 cm Action 28: Investigate civil engineering for more space. ‘Impossible’, Supporting wall of main PSB cross beam and complete dismantling of region would be required for intervention. Very complicated and costly operation 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 4

Action 1: Investigate possible gains from shorter dipoles - 1 F F B A D-E C-F Study of a PSB injection region with shorter MB 162 and MB 011 dipoles. The advantages of this layout are: A. Diameter of injection chamber remains 60 mm (not reduced to 54 mm). B. Available space for septum can be increased to ~20 mm (now 12 mm). C. Available space for the stripping foil unit could be increased. D. No more overlap of painted beam envelope at the H‐/0 dump. E. Possibility to have an external , removable dump. F. Sufficient space is created to have vacuum sector valves for each ring. G. Reduced overlap of BSW 1‐ 4 magnets and main dipoles fringe fields. 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 5

Action 1: Investigate possible gains from shorter dipoles - 2 F F A B C-F D-E Study of a PSB injection region with only shorter MB 011 dipoles. The advantages of this layout are: A. No gain for injection chamber. B. No gain for septum space. C. Available space for the stripping foil unit could be increased. D. No more overlap of painted beam envelope at the H‐/0 dump. E. Possibility to have an external, removable dump. <‐ major advantage !! F. No gain for vacuum sector valves (see alternative solution in next slides). G. Only reduced overlap of BSW 4 magnets and main dipoles fringe fields. 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 6

Possible solution for integration of sector valves - 1 Vacuum Manifold Current Baseline Design Vacuum Manifold Retractable Foil Exchange Mechanism or e f ce g th a sp kin d e loc r i qu is b sage e R em as t p sys Ion Pump

Possible solution for integration of sector valves - 2 Series 48 Large body gate valves with pumping manifolds Fixed Foil Exchange Mechanism em t s sy he r fo g t e ac ckin p d s g blo age e uc din ass d p Re avoi Ion Pump Horizontal Option

Other Actions Action 9: Summarise technical feasibility of ceramic chambers. • We are confident it is possible to manufacture such chambers since a Market Survey yielded several positive replies. Action 15: Test repetitive movement & stop/start for foil changer • Prototype has been adapted for such test, problems with stepping motor torque, test to be continued. Action 16: Investigate changing single foils with mock‐up of changer unit • Test been done and this is possible 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 9

Progress & Objectives • 200 μg/cm 2 (~1 μm) Foil gluing tests: – Carbon-like-diamond foils easy to handle but very brittle (break easily during bracket manipulation). – Amorphous graphite foils strong but difficult to handle (curl). – Collodion coated amorphous graphite foils ordered to be tested. – Optimum gluing technique seems to be with aquadag. • Vacuum test with glued foils has started. • A more rigid and dimensional constrained frame design has been made and ordered. • Objectives 2012 Build & Test motorised, under vacuum, prototype including BTV system. 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 10

Conclusion • Layout with 2 reduced length PSB dipoles would be the optimum sollution, but costly (see presentation Antony). • Layout with reduced length MB 011 only could allow an external, shielded, removable dump with dedicated pumping. (Specially if the dump length is reduced, see presentation Melanie) • Investigate further BSW 2 -3 sectorisation with large body valves, allowing fixed stripping foil mechanism avoiding blocking of passage. 20/03/2012 Follow-Up Review on PSB 160 Me. V H - Injection 11