Inclinometry on the evening of 970410

Summary : regular CW inclinometry following the welding of track joint 7/8 during the day by Ian Pain and co-workers.

Inclinometry started at 20:30 as allowed by IP : the track is still cooling at this point, so it is possible that some inclinometry structure seen in these data will be thermal in nature.

Comparison of the new data with that of 970325, exemplified by the data from the Y-axis of the inclinometer on the Left A-frame, LY   , shows substantial change. The difference plot shows humps and spikes of size 5".

The new model was created and installed. The difference between the new model and the old one of 970325 is shown here .

Follow-up inclinometry has been requested to account for any thermal problems during this run.

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imc 970411