After taking phase 3b spectra on ETMY (see aLog 6432). Several rounds of transfer functions have been running last week for the main and reaction chain of ETMY, with and without the damping.
During each of the measurements the ISI was in its damped state.
The first 4 attached files are respectively showing comparisons between :
- M0 model (fiber) vs M0 damping off (2013-05-21)
- M0 model (fiber) vs M0 damping on (2013-05-21)
- R0 model (erm) vs M0 damping off (2013-05-23)
- R0 model (erm) vs M0 damping on (2013-05-24)
The 2 following attached files allquads_2013_05_28_Phase3b_H1SUSETMY_ALL_TFs.pdf and allquads_2013_05_28_Phase3b_H1SUSETMY_ALL_ZOOMED_TFs.pdf are showing comparisons between :
- page 1 to 6 : M0 model (fiber) vs H1 damping off (2013 May 21st, isi damped, phase3b) vs H1 damping off (2012 November 20th isi damped, phase 3b) vs LHO damping on (2013 May 21st, isi damped, phase 3b)
- page 7 to 12 : R0 model (erm) vs H2 damping off (2012 May 25th, isi floating, phase 3a) vs H1 damping off (2013 May 23rd, isi damped, phase 3b) vs H1 damping on (2013 May 24th, isi damped)
Conclusion :
The last transfer functions taken on ETMY for M0 and R0 are showing a good agreement with models and previous measurements. R0 pitch looks different than the model because of the stiffness added by the cables.
matlab files are located in
- /ligo/svncommon/susSvn/trunk/QUAD/H1/ETMY/SAG{M0-R0}/Data
- /ligo/svncommon/susSvn/trunk/QUAD/H1/ETMY/SAG{M0-R0}/Results
pdf files are located in
- /ligo/svncommon/susSvn/trunk/QUAD/H1/ETMY/SAG{M0-R0-L1-L2}/Results
- /ligo/svncommon/susSvn/trunk/QUAD/Common/Data
The files as well as the matlab scripts in /trunk/QUAD/Common/MatlabTools have been commited to the svn
plotquad_matlabtfs.m has been slightly modified to add a "damp_ON/OFF" in the pdf title depending on the state of the suspension during the measurement (as for the first 4 attached pdf)
