Calibrations

9:30: start of operations

HEXA	-2.03	-7.25	4.47	-31.74	187	0

We have a problem with BCU: when we change subapertures the HVC goes to limit. We stop the update to HVC before configuring:

slopeComputer.disableHVCUpdate()

We open the jitter & pupil loops, we take snapshots to check swing arm vibrations:

TN	Notes	Res
20141104_173522	"	179
20141104_174007	JCL	139
20141104_173448	swing arm vibrations check, JOL	179

10:30: we restore the 10modes recontructor for the blue pupil. Loop frequency = 320Hz. Offload to Hexapod is disabled. Modes 2-10, gain= 0.3.

Then we increase the loop frequency to 1kHz, gain >0.28 oscillates. JCL + correcting TT on LGSW are conflicting.

PI	X	Y
Blue	-0.72	-2.21
Yellow	-4.12	0.25
Red	2.60	-4.47

Setting the PI offset to a static value seems to increase the loop stability. We rise the mode number up to 10 and gain= 0.2. Problem with offload...

We generate a new rec from the 300Hz IM: REC: 10modes_ryb_300Hz and we close the loop with gain= 0.3.

TN	Notes	Res
20141104_184331	g(2-10)=0.3, POL	295
20141104_184527	bad, pupil loop was converging	366
20141104_184557	PCL	365
20141104_184812	g(TT+10modes)=0.3	530
20141104_185107	g(2-10)=0.3, JCL	563

We record a new IM with the 10modes loop closed at low gain (0.05).

IM: 20141104_181359 shift=2

REC: 50modes_ryb_300Hz

we close the loop with 50modes and a gain up to 0.65. It works, so we load also a disturb equivalent to 0.8" (oversampling=300Hz, wind = 5m/s).

TN	Notes	Res
20141104_193819	OL	480
20141104_193906	OL	479
20141104_194000	OL	480
20141104_194215	g=0.1	82
20141104_194340	g=0.3	54
20141104_194601	g=0.7	97

12:50: new REC, just yellow pupil

REC: 50modes_y_300Hz

TN	Notes	Res
20141104_195042	Y, g=0.7	249

We record an IM at 150modes closing the loop on 50 with the old rec (ryb).

IM: 20141104_195640 wrong, the shell was not flattened...

IM: 20141104_195926 OK

REC: 150modes_y_300Hz

TN	Notes	Res
20141104_201015	Y, g(0-50)=0.6, g(50-150)=0.3	138
20141104_201306	Y, g(0-50)=0.65, g(50-150)=0.6	176

Now we set the loop frequency to 1kHz, diodes current to 0.2A (equivalent to 4000 ADU/subap), we load disturb equivalent to 0.8".

NB: until now we used OVS disturbance function to load the disturb, this is correct only if the WFS is running at slower speed than the disturb. In this case (WFS @ 1kHz) we should use WFS disturbance

TN	Notes	Res
20141104_202230	Y, g(0-50)=0.3, g(50-150)=0.2	122
20141104_202309	Y, g(0-50)=0.5, g(50-150)=0.3	251

REC: 150modes_ryb_300Hz

13:30: stop to refill LBC

13:45: we start FLAO board

DARK: 20141104_204154

TN	Notes
20141104_205523	after rebooting arbitrator

14:21: light is back on LGSW

PI	X	Y
Blue	-3.47	-0.56
Yellow	-5	3.45
Red	0.14	-5.76

TN	Notes	Res
20141104_213058	OL	470
20141104_213135	OL	471
20141104_213340	OL	471
20141104_213552	g(0-50)=0.5, g(50-150)=0.3	70
20141104_213632	g(0-50)=0.3, g(50-150)=0.2	70

Now we load disturb equivalent to 1.2", v=15m/s,

TN	Notes	Res
20141104_214012	OL	609
20141104_214042	OL	609
20141104_214203	g(0-50)=0.3, g(50-150)=0.2	80

We remove disturb, we flatten the mirror and we acquire slope offset:

SO: 20141104_214442

TN	Notes	Res
20141104_214643	g(0-50)=0.3, h(50-150)=0.2	80
20141104_214756	OL	608
20141104_214942	g(0-50)=0.6, h(50-150)=0.4	83
20141104_215002	"	80
20141104_215638	noTT, JOL, g(2-50)=0.6, h(50-150)=0.4	82
20141104_215734	noTT, JCL, g(2-50)=0.6, h(50-150)=0.4	81

15:00: we close the loop on FLAO, correcting 400modes. We set PIs to the following static position:

PI	X	Y
Blue	-3.87	1.46
Yellow	-3.23	4.49
Red	-2.57	-4.14

We focus the Z stage on FLAO: Z= 37mm

SO: 20141104_221601 optimized for CCD47 and IRTC images

TN	Notes	Res
20141104_221740	FLAO CL	60
20141104_221811	"	75
20141104_222248	ARGOS CL, g(0-50)=0.6, g(50-150)=0.4	85
20141104_222316	"	87

15:25: stop operation with CalUnit

Pockels cells test with IS

15:30: after operations on the first half of the day we perform a PockelsCellsTransmission test using the Internal Sources. The system configuration is the following:

PUPIL	Motor X	Motor Y	PI X	PI Y
Blue	747	474	3.38	-0.70
Yellow	296	673	1.21	0.32
Red	416	657	-0.98	0.04

TN	Sup
'20141104_223443', '20141104_223759'	B=75, Y=113, R=95