The position of the marionette meant to reproduce the angular reference gathered by the focal plan optical lever impinging on the mirror was obtained using the marionette control.
Notice: no sensor on both marionette and mirror has been displaced (only the image plane one used to damp the mirror).
The data are recorded in Sc_NE_MIR_PSD_X2 and Sc_NE_MIR_PSD_Y2 (They are non normalised asymmetries in fine mode, notetice that due to technical reasons the probe of the reconstructed angle is absent, but the information is the same) FIG 1.
In this situation we recovered the alignment of the HS SLED beam of TCS ( a separate entry will appear about this topic ).
In the evening I spent some time trying attain the balance keeping the balance motor slides .
Unfortunately, due to technical reasons I did not succede and today I set again the system suing the motor balancing.
Anyhow, at present the information about the control offset meant to control the marionette around the aligned position of the mirror is recorded in Marionette control DSP card.
Later I will centre the marionette control zero in order to attain the same mirror position working around its zero.
I observed an unpleasant view of the mirror as I took few pics during the work. The time I illuminated the mirror using a strong led illuminator on my head.
FIG 2 : from side OK
FIG 3 : AAAAHHHGH Jeopardised spots at 45 deg incidence ! That's the first contact certainly because getting close to the mirror one can easily observe its contours
Probably they have no effect....
- LC majorette closed Tx Ty Tz zDamp
- F7 Ty
- F0 Position X,Z,Ty
GUARD
-F0 Hor ID ON
-F0 Ver ID OFF
- F0 GUARD ON
- F7 tilt DAMP ON
- F7 GUARD ON
- PAY LC ON
- GUARD ON
NOTICE: Mario OpLev has been readjusted in order to keep the mirror in the aligned position (now the offset in the DSP Mar control is 0)
- No change in ctrl filters
- The loops will be opened (leaving only F0 Pos ON on Sunday 7/January) before the venting needed by VAC operation (postponed to Sunday Morning)
What remains: -touching the OpLev for Mario control very probably the PSD is not anymore precisely located on focal plane, that must be revised
- Voltage offsets on H F0 control should be removed using the motors
