Cavity locked today under vacuum and no airflow, it is stable over a long time
the alignment was improved and an increase of the transmission by 20 % from its original value
unfortunately, data from the oscilloscope was saved, but it was not in the correct format (image) to show.
Attached ; the mode shape, the new motor positions.
| Manar Amer wrote: |
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Current setup at SBox for locking the cavity
After spacial matching, the coupling increased to ~ 15 - 20 %
The locking was done for the fundamental mode, tried to improve the coupling with the motors, but the lock is very unstable to be investigated. (Note: the cavity in under normal pressure)
| Manar Amer wrote: |
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Start with the cavity lock images attached, taken from last week, at start we have a coupling ~ 5% and started improving on the alignment .
The image of 00 modes attached corresponds to the coupling seen on the oscilloscope.
We have a higher coupling with the 11 mode due to the size of the injected beam in comparison to mode
lenses were added to improve it.
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