I finished preparing the online calibration filters for the DRMI which I started in the last week (see alog 14030). The output spectra are now monitored on projector1 (see alog 14042) in the control room as shown in the above pitcture.
I checked the HSTS and BS suspension filters in the calibration paths in h1oaf. While the HSTS suspensions looked good to me, the BS suspension did not look similar to the suspension model. In particular, the location of resonances did not look correct in the first place. So I changed the BS model by running the BS design Matlab script in the SVN and, copying and pasting the result in foton. The DC gain was then re-adjusted by hand such that it is at 8.85 x 10-5 um/cnts (= 46.40 um / (4 x 217 counts)). Note that this 46.4 um came from DCC-T1100602-v2. And the factor of 4 in the denominator compensates to the Euler matrix in the suspension realtime controller.
The dtt xml file now lives in userapps/release/isc/h1/scripts and is named DRMI_spectra_whiten.xml.
Since all the signals are whitened in the oaf model, the spectra must be un-whitened when they are displayed. I put the anti-whitening calibrations in the dtt file and this calibration must be always applied to all three spectra in order to get the correct displacements. Note that the whitening filters are the ones copied from Livingston at some point in the past and they have the following poles and zeros: zpk([1;1], [100;100], 1, "n").
Calibration factors for the DRMI optica gains:
- PRCL = 3.3e-7 um/cnts (REFL_A_RF9_I)
- MICH = 1.16e-7 um/cnts (REFL_A_RF45_Q)
- SRCL = 5.7e-6 um/cnts (REFL_A_RF45_I)