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The main objective is to be able to use subsystems built for the LCLS-I reference frequencies with the LCLS-II beam.  The beneficiaries include XTCAV, STCAV and possibly others.  In order to do that, the 476MHz Master Oscillator (MO) signal for LCLS-I should be replaced with another one 476MHz source locked to the 162.5MHz LCLS-II Master Oscillator operating at 162.5MHz.

Timing System Description

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