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User name D. Parno
Log entry time 00:24:29 on May19,2009
Entry number 274635
keyword=Compton update
Just a quick expansion on the current Compton status: The cavity power has been oscillating with a large amplitude (~100 W) over a time scale of minutes. Sirish tuned the cavity this afternoon in an effort to stabilize the cavity power. Unfortunately, stabilizing the cavity power in one laser polarization state had the side effect of rendering the other laser polarization state unable to lock.
Alexandre made a few attempts at fixing the problem this evening by changing servo settings, but he did not touch the tuning mirrors so as not to destroy Sirish's work. Alexandre was unable to restore cavity lock for the second laser state, so the Compton is not usable. My understanding is that further cavity tuning is planned for tomorrow.