Dome closed because of snow...

IM bewteen piezo TT mirror and TS modes

This IM is needed to properly offset the piezo mirror that produces the TT modulation on the PYR to recenter it when the TT loop is closed on the QC. The k-mirror angle is 138.127deg. The TT modulation is set to 1V, PYR running at BIN4, 1kHz. The XY offset is measured in V while the TS modes are in nm rms.

X offset	Y offset	TS tip	TS tilt
0.0	0.0	17.0	-16.5
0.5	0.0	29.0	-6.2
1.0	0.0	27.0	-6.2
2.0	0.0	-	-

We have too much light on the PYR, we switch to BIN2, 3V modulation amplitude:

X offset	Y offset	TS tip	TS tilt
0.0	0.0	5.0	6.0
0.5	0.0	32.0	-1.0
1.0	0.0	28.0	0.0
2.0	0.0	25.0	0.0

So we saturate the TS signals for XY offsets > 0.5V. So we decide to calibrate between +/-0.2V. We will put a gain > 1 on the recentering loop...

X offset	Y offset	TS tip	TS tilt
0.0	0.0	16.0	10.0
0.2	0.0	78.0	-163.0
-0.2	0.0	-38.0	181.0
0.0	0.0	16.0	10.0
0.0	0.2	-184	-38.0
0.0	-0.2	37	193

The LUCI rotator angle is 266deg, K-mirror at 171deg (when LUCI rot is at 300deg the K-mirror is at 154deg): K-mirror angle: -0.5 * rot angle + 304deg.

Test of the FastLink fibers splitter

Gilles installs the fiber splitter in the threehouse. We test the comunication between the FLAO BIN1 and ASM. We first close the loop at 150modes with LGSW only. Then we close a FLAO loop through ARGOS.

TN	AO Gain	Res. WF [nm rms]	AO rec	JCL	PCL	Notes	Plot
20150225_090847	-0.3,-0.7,-0.5	148.42	20141202_125700	F	T	LGSW
20150225_091435	1,0.7,0.4	58.8433	20141127_200600	F	T	FLAO BIN2

-- MarcoBonaglia - 03 Mar 2015