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User name X. Zheng
Log entry time 15:53:11 on June20,2001
Entry number 63894
keyword=Half waveplates test done
All eight half waveplates have been tested in EEL target lab. Two beam splitters, one known half waveplate from UVa have been used for this test. The original setting of half waveplates are good, within the error bar of +/- 0.5 degree. (the test done today has a larger error of +/- 1.0 degree due to the fact that we do not have enough instruments in the EEL, all have been moved to the hall). So we are going back to the original setting, will install all half waveplates during the next controlled access.