[time-nuts] Cesium DOES Drift, not
cfharris at erols.com
Wed Apr 20 19:27:09 EDT 2005
There should be some evidence that the center of the beam
current is slipping off of its peak value if it is a control
Perhaps you can open the loop, and use the control voltage pot
to peak the beam current and check the frequency at that point?
Brooke Clarke wrote:
> Hi Chuck:
> Is there something I can to do check for control loop failure?
> Chuck Harris wrote:
>> Bill Hawkins wrote:
>>> How about this:
>>> Brooke is watching the last of his cesium evaporate.
>>> Bill Hawkins
>> I don't think so, that appears as greater and greater phase noise.
>> I think Brooke is watching his control loop fail. Cs doesn't drift,
>> that is why it is a primary standard.
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