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Machine Studies 2006
Recognized need for IP compensation due to injecting into collision (3/23)
- Original design inspired by injection current limit of weak into strong beam
- Use of closed beta bumps preserves optics outside IP
Optimized IP knob coefficients using tunes and EXFR PB lifetime
- Knobs 1 and 2: Tune tracker
- Knobs 3-6: Use of closed pulsed bump preserves collision and IP optics, but ...
- ... tests aperture only at 28E and 34E
Superpose IP and LRBBI coefficients; find current limit
- 8x3 90 mA 105 mA (3/23)
- 8x4 120 mA 132 mA (4/5, JTH later increased to 145 mA)
Notes: