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L4 – PSB - Injection

Stripping Foil and instrumentation R. Noulibos - W. Weterings – Pieter Van Trappen T echnical meeting 21-mai-2014. L4 – PSB - Injection. L4 – PSB Injection: Stripping Foil System . Stripping Foil Function. PS Booster Rings. KSWs. NEW L4-PSB 4 RINGS INJECTION SYSTEMS. BSWs.

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L4 – PSB - Injection

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  1. Stripping Foil and instrumentation R. Noulibos - W. Weterings – Pieter Van TrappenTechnical meeting 21-mai-2014 L4 – PSB - Injection EDMS doc. 1370573

  2. L4 – PSB Injection: Stripping Foil System Stripping Foil Function PS Booster Rings KSWs NEW L4-PSB 4 RINGS INJECTION SYSTEMS BSWs BI-SMV BI-DIS From Linac 4 Chicane STR • Linac 4 produces a 160MeV H - beam Dump • Beam is distributed in 4 PS Booster chicanes [BI.DIS + BI.SMV] • KSWs produce a circulating beam painting bump • BSWs produce the injection bump • Stripping foil in chicane convertsH-in H+ Chicane • H0/H- dump intercepts un-stripped H0/H- • H + are introduced in the PSB ring

  3. L4 – PSB Injection: Stripping Foil System Injection chicane principle PSB beam orbit

  4. L4 – PSB Injection: Stripping Foil System Injection region [chicane] BSW4 + Dump BHZ BSW3 STR BSW2 BSW1 BHZ

  5. L4 – PSB Injection: Stripping Foil System Stripping foil position Internal dump Stripping foil Changer H+ Stripping foil Orbital Beam H0 H- H+ H- 1 µm thickcarbon foil (24x68mm) Beam currentmeasurements

  6. L4 – PSB Injection: Stripping Foil System Stripping foil vacuum tank Camera flange BI.STR vacuum tank with BSW 2 & 3 vacuum chambers Screen mechanism flange Bellow Inconel Undulated chambers Viewport + foil changer mounting Viewport

  7. L4 – PSB Injection: Stripping Foil System Stripping foil specification BI-STR Tank BSW2 BSW3 148 & 132 Foil & frame constraints Top view of foil mechanism

  8. L4 – PSB Injection: Stripping Foil System BI.STR Used cases

  9. L4 – PSB Injection: Stripping Foil System Stripping foil gluing 1 µm thickcarbon foil ACF-200 (24x68mm) Aquadag 18% Stainless steel frame Available Foil types _ Foil ACF-200 - (200µg-1µm) 21mm x 68mm _ Foil ACF-200 - (200µg-1µm) 24mm x 68mm _ Foil ACF-200 - (200µg-1µm) 21mm x 68mm - collodion-coated _ Foil ACF-400 - (400µg-2µm) - 24mm x 68mm _ Foil XCF-200 - (200µg-1µm) 32mm x 68mm _ Foil XCF-200 - (200µg-1µm) 32mm x 68mm - collodion-coated _ Foil DLC-13-2000-S (400µg-2µm) 25mm x 65mm _ Foil DLC-13-1000-S (200µg -1µm) 25mm x 65mm Aquadag 18% : 2 drops (Syringe) cotton stick manipulation (precision?)

  10. L4 – PSB Injection: Stripping Foil System Stripping foil vacuum test 1 µm thickcarbon foil (24x68mm) Foil types test = OK _ Foil ACF-200 - (200µg-1µm) 21mm x 68mm _ Foil ACF-200 - (200µg-1µm) 24mm x 68mm _ Foil ACF-200 - (200µg-1µm) 21mm x 68mm - collodion-coated _ Foil ACF-400 (400µg-2µm) - 24mm x 68mm Successful p vacuum tests

  11. L4 – PSB Injection: Stripping Foil System BI.STR mechanism in vacuum tank Beam direction Mirror (BI) Vacuum rotary feedthrough Camera (BI) Resolver Stepper motor Screen (BI) Foil changer Flexible Coupling Zero indexation lever

  12. L4 – PSB Injection: Stripping Foil System Zero Reference Position Mechanism Stop Lever Micro-switch Radiation hard Vacuum actuator 3.5V, 250mA 5mm

  13. L4 – PSB Injection: Stripping Foil System Foil Displacement Control Micro-switches Honeywell: _ Stainless Steel _ Prepared for UHV _ Tested by TE/VSC Function: Control of foil stroke displacement Speed: Stroke 90.25mm in ~ 20s (1 rotation in ~2mn) Removed with methylene chloride

  14. L4 – PSB Injection: Stripping Foil System Stripping foil position control Membrane potentiometer: _ Vacuum tests ongoing _ Position tolerance +/-0.5mm Wiper contact 5mm

  15. L4 – PSB Injection: Stripping Foil System Instrumentation BTV Screen Developed by BI Beam screen + mirror Camera BTV optical line support

  16. Beam direction L4 – PSB Injection: Stripping Foil System Stripping Mechanism Prototype Stepper motor Zero indexation Vacuum rotary feedthrough Spring tensioner Position adjustment +/-2mm Gear Box 146mm Flexible Coupling Band + clamps Vacuum chamber aperture 6 foils (pitch = 90.25mm)

  17. L4 – PSB Injection: Stripping Foil System Next steps for stripping foil system 1) vacuum tank for prototype (L4 beam line) 2) membrane potentiometer + support (TE/VSC) 3) foil current measurement 4) foil changer 5) improve gearbox for reference position actuator 4 1 2 + 3 5

  18. L4 – PSB Injection: Stripping Foil System Questions?

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