'Mhz source' presentation slideshows

UED at ASTA: LLRF and triggers

UED at ASTA: LLRF and triggers. Need < 100 fs jitter Currently we measure > 500 fs RMS phase noise in 10 Hz to 10 MHz bandwidth at 476 MHz Excessive phase noise is due to the dirty reference from LCLS (which conveniently provides triggers synced to PG&E zero crossing) Suggested improvements:

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