1. W. Morse PEDM Review1 Electric and Magnetic Fields W. Morse BNL

2. W. Morse PEDM Review2 FN Field Emission Current vs. E

3. W. Morse PEDM Review3 Recent Progress from LC/ERL R&D (5mm gap tests) Cornell/JLab

4. High Pressure Water Rinsing

5. Gap Spacing - 1990

6. W. Morse PEDM Review6 How to Scale HPWR to 3cm gap?

7. Contingency Plan

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

10. R&D First E Module ItemK$ Electrode Plate27.5 Vacuum Tank35.7 End Flange13.5 Ports35.5 Vacuum Tank Assembly6.3 Electrode Assembly3.8 Inner Support Structure48.1 Gauges22.5 Vacuum Equipment104.1 Vacuum Hookup5.0 Instrumentation and Commissioning52.5 Total356.4

11. W. Morse PEDM Review11 First E Module Timeline

12. W. Morse PEDM Review12 Start date set arbitrarily to Jan 1.

13. Canceling Earth’s Magnetic Field Need factor 3  10 8 shielding. Outside active. Cancel field at surface of passive shield. Passive = 10 5 for 6M$ delivered (not installed). Inside active. Make CW/CCW bpms read the same.

14. Inside Active Feed-back Every 10 3 s? Plot for 10 4 runs: dS/dt* =  B* + dE*

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. W. Morse PEDM Review16 Extra Slides

17. W. Morse PEDM Review17 Large Scale Electrodes ParameterTevatron pbar- p Separators BNL K-pi Separators PEDM Length2.6m4.5m3m Gap5cm10cm3cm Height0.2m0.4m0.2m Number24280 Max. HV  180KV  200KV

18. W. Morse PEDM Review18 Tevatron pbar-p Separator Module

19. W. Morse PEDM Review19 HV Feedthrough to 0.2m High Electrodes