mark.barton@LIGO.ORG - posted 09:04, Thursday 31 October 2013 - last comment - 15:17, Thursday 31 October 2013(8330)
IM TFs
Cheryl asked if we could get TFs for IM2, IM3 and IM4 to complete the IM1 set from 8287 before the HAM door is removed, so I set them going in parallel in three Matlab sessions on opsws7. They should be done by about 11:30 am.
Comments related to this report
mark.barton@LIGO.ORG - 11:53, Thursday 31 October 2013 (8334)IOO
There's still a bug in the script that does comparison plots so stay tuned for that.
Note that the model now includes eddy-current damping, but the values are from by-eye fitting to IM1 data, not actual estimates from magnet and copper block properties.
Here's the comparison plot, including one old trace for IM1 taken by Szymon with DTT on 1/23, and the four new traces for IM1-4 taken with Matlab recently.
The consistency from measurement to measurement is very good, even between DTT and Matlab.
There appears to be a different gain error for each DOF, which is probably an issue with the model:
L: model is about 0.6 of measurement
P: model is about 1.4 of measurement
Y: model is about 2.4 of measurement
Arnaud spotted that the script error mentioned above turned out to be that plothaux_matlabtfs.m and plotHAUX_dtttfs.m were writing intermediate data files of slightly different formats. We tweaked plotHAUX_dtttfs.m and regenerated ^/trunk/HAUX/H1/IM1/SAGM1/Results/2013-01-23_1600_H1SUSIM1_M1.mat.
All data taken OK. Individual plots attached.
There's still a bug in the script that does comparison plots so stay tuned for that.
Note that the model now includes eddy-current damping, but the values are from by-eye fitting to IM1 data, not actual estimates from magnet and copper block properties.
Chamber is released for door work.
Here's the comparison plot, including one old trace for IM1 taken by Szymon with DTT on 1/23, and the four new traces for IM1-4 taken with Matlab recently.
The consistency from measurement to measurement is very good, even between DTT and Matlab.
There appears to be a different gain error for each DOF, which is probably an issue with the model:
L: model is about 0.6 of measurement
P: model is about 1.4 of measurement
Y: model is about 2.4 of measurement
Arnaud spotted that the script error mentioned above turned out to be that plothaux_matlabtfs.m and plotHAUX_dtttfs.m were writing intermediate data files of slightly different formats. We tweaked plotHAUX_dtttfs.m and regenerated ^/trunk/HAUX/H1/IM1/SAGM1/Results/2013-01-23_1600_H1SUSIM1_M1.mat.