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Electric and Magnetic Fields

Electric and Magnetic Fields. W. Morse BNL. FN Field Emission Current vs. E. Recent Progress from LC/ERL R&D (5mm gap tests) Cornell/JLab. High Pressure Water Rinsing. Gap Spacing - 1990. How to Scale HPWR to 3cm gap?. Cornell. 2011 Cornell Goal. PEDM Goal. 2010 Cornell.

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Electric and Magnetic Fields

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  1. Electric and Magnetic Fields W. Morse BNL W. Morse PEDM Review

  2. FN Field Emission Current vs. E W. Morse PEDM Review

  3. Recent Progress from LC/ERL R&D (5mm gap tests) Cornell/JLab W. Morse PEDM Review

  4. High Pressure Water Rinsing

  5. Gap Spacing - 1990

  6. How to Scale HPWR to 3cm gap? Cornell 2011 Cornell Goal PEDM Goal 2010 Cornell W. Morse PEDM Review

  7. Contingency Plan Less stored beam Increase Ring Radius (>straights)

  8. Electrode Shape Equi-potential Surface.  = 0.20  0.02 for SCT.  0.02 is for no sextupoles. 0.10 with sextupoles.

  9. Sagitta = (1806)m for 0.02 30m for 0.1 0.2mm 10cm

  10. R&D First E Module

  11. First E Module Timeline W. Morse PEDM Review

  12. Start date set arbitrarily to Jan 1. W. Morse PEDM Review

  13. Canceling Earth’s Magnetic Field Need factor 3108 shielding. Outside active. Cancel field at surface of passive shield. Passive = 105 for 6M$ delivered (not installed). Inside active. Make CW/CCW bpms read the same.

  14. Inside Active Feed-back Every 103s? Plot for 104 runs: dS/dt* = B* + dE* dS_y <B_r> edm

  15. Conclusions PEDM E spec is under the HPWR curve = low technical risk. Contingency plan: reduce gap and/or increase bending radius. Need to increase bending radius anyhow if straights are not long enough. Shielding earth’s B field = low technical risk. Contingency plan: go from 4 to 5 layers for several M$ more.

  16. Extra Slides W. Morse PEDM Review

  17. Large Scale Electrodes W. Morse PEDM Review 17

  18. Tevatron pbar-p Separator Module W. Morse PEDM Review 18

  19. HV Feedthrough to 0.2m High Electrodes W. Morse PEDM Review 19

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