CAL (General)takahiro.yamamoto - 17:18 Friday 14 February 2020 (12965)
Print this reportEstimation of ETMX actuator efficiency[Ogaki, Ushiba, Yamamoto]
We checked the actuator efficiency of ETMX by the height of calibration line from ETMX and ETMY.
- (DARM_DISPLACEMENT) / (ETMY_TM_SUMOUT_EXC) = (CAL filter) * A_ETMY * C / ( (1 + G_EX) * (1 + G_EY) ) = 3.83(4) x10^{-10}
- (DARM_DISPLACEMENT) / (ETMX_TM_SUMOUT_EXC) = (CAL filter) * A_ETMX * C / ( (1 + G_EX) * (1 + G_EY) ) = 1.81(3) x10^{-10}
- A_ETMX / A_ETMY = 0.471
Roughly a factor of two is difference between actuator efficiency (from count to meter) of ETMX and one of ETMY.
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wataru.ogaki - 17:44 Friday 14 February 2020 (12967)
Print this reportWe also estimated ETMX actuator efficiency from transfer function measurement.