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User name jpchen
Log entry time 11:11:08 on January 6,2003
Entry number 90556
keyword=longitudinal EPR works now
Longitudinal EPR was not working. There were only 9 microV D2 light (with modulation Vpp=1.2V), though photodiode has 116 mV. There were two D2
filters in. During the controlled access, Patricia took out one D2 filter. The D2 signal went up to ~20 microV with modulation Vpp=1.2V (~25 microV with Vpp=1.6V).
Did EPR and it is fine. Patricia will fine tuning it later.