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With Linac Locking, the above 476MHz LCLS-I Master Oscillator gets replaced by a new RF reference that is phase-locked to the LCLS-II Master Oscillator (in Sector-2) and transmitted to Sector-10 via an RF-over-Fiber (RFoF) connection.   Lastly, the alignment of the triggers between SC and NC timing is done in Sector-20.

RF Distribution

References

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