(spike noise on PRM TM oplev Yaw)
During IFO lock from 19:40 (20 min lock time), PRM oplev yaw got strange spike noise during lock (first figure). In this time, the IFO kept lock. However, when the lock down finally, same shape spike noise appeared (second figure).
The second figure show this strange spike (around -1300) and spikes at the lock down.
(Beam position)
ETMX beam position is off center a little bit.
ITMY beam position is off center a little bit.
around 20:15.
[Fabian, Yokozawa, Miyoki]
Again noise in PRM OPLEV YAW.
Shaking frequency seems to be about 2 Hz.
PR2 PRM both have same noise sometimes.
