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Cell Engineering Update

Cell Engineering Update. Contents. Look at fitting in BPMs with a pick-up diameter increase from 12 mm to 20 mm Consider circular vacuum chamber cross-section Update position of field clamp plates relative to magnets and confirm new aperture of holes for penetrating beam tubes

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Cell Engineering Update

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  1. Cell Engineering Update

  2. Contents • Look at fitting in BPMs with a pick-up diameter increase from 12 mm to 20 mm • Consider circular vacuum chamber cross-section • Update position of field clamp plates relative to magnets and confirm new aperture of holes for penetrating beam tubes • Investigate any potential saving by adopting an aluminium alloy sealed flange rather than a CF flange

  3. Cell Drawing at Design Review 26.2.07 BPM too close to cavity D D F Increasing diameter of pick-up here eats into beam aperture Inside of ring Clockwise Beam Cavity Outside of ring

  4. Cell drawing 207 – 10131 B Circular vacuum Chamber 30 mm 17 mm Inside of ring Clockwise Beam Field clamp dimensions the same in every cell Proposed location of BPMs 1 2 3 4 F Further optimisation possible No 1 could move to the left by 10 mm No 2 could move to the right by 5 mm No 3 is fixed No 4 could move to the left by 10 mm Outside of ring D F D

  5. Vacuum Chamber Sectionsthro. Magnets Can reduce to R51 R53 R36 Section thro. F Magnet Section thro. D Magnet Tube OD 52 mm, ID 48 mm Seamless tube St. St. 316L Tube OD 44 mm, ID 40 mm Seamless tube St. St. 316L

  6. BPM Section 20 mm 48 mm

  7. RF Cavity Thinner flange Increase in bore from 38 mm to 40 mm to remove offset 40 mm 40 mm Increase from 76mm to 86 mm 86 mm 110 mm Flange to Flange

  8. Conclusions • Diameter 20 mm pick-up can fit in the locations shown • Circular vacuum chamber can fit around the beam stay apertures specified and within the magnet apertures defined for a rectangular vacuum chamber without significant changes to the magnet inscribed radii • Circular vacuum tubes within the magnet aperture are standard tube sizes without any longitudinal welds. Less welding, less distortion. Chamber construction will be less expensive • Construction technique for transitions between the various diameters is by wire electro discharge machining • Cavity internal length increased by from 76 mm to 86 mm by using a specially designed, thinner non standard flange based on a ISO-KF aluminium alloy seal gasket

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