Comparison of Fundamental and Dual Harmonic RF Buckets

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Presentation transcript:

Comparison of Fundamental and Dual Harmonic RF Buckets V0 Volts (KV) δV0 Θ (deg) @ time = 0.3 ms ~ peak trapping loss Bucket Phase length: 218 - 289 deg, Acceptance: 1.04 - 1.24 eVs Time (ms)

Operational theta Oct & Nov 07

1&2RF Operational Gapvolts Oct & Nov 07 2RF - ~9kV peak (on 2 cavities) >200uA for last day or so of last run!

Longitudinal Profile at 0ms green 200 µA Red 210 µA Blue dot 230 µA Black 175 µA

Longitudinal Profile at 0.25ms green 200 µA Red 210 µA Blue dot 230 µA Black 175 µA

Longitudinal Profile at 0.5ms green 200 µA Red 210 µA Blue dot 230 µA Black 175 µA

Operational delta October & Nov 07

October 2RF Machine Physics

Tweaked delta during 50Hz operations delta changed by changing (slowly) antiphasing -> phasing rise time

Achievable delta cf Theoretical

Analysis of pulse shapes