Autogain test (QC + LGSW)

We tested the autogain procedure in different environments: no disturb, disturb =1.2", PYR + LGSW and QC + LGSW. We first optimized the TT gain. Then we optimized the LO gain having closed the TT loop with the best gain found. We repeated the same procedure to optimize the HO gain (TT + LO closed loop).

Quad cell autogain:

LGSW autogain (modes 2-36 left, modes 37-150 right):

QC hot spot on CCD47

We checked the position on the PSF on the CCD47 when the TT loop is closed on the QC:

BIN2: [254; 270]px, modulation offset = [-2.0, 0.1]V, rotator angle = 361°, K-mirror angle = 89.5°

The hot spot definition is independent from the FW1 filter because the 2 elements (QC and CCD47) are common path with FW1.

JitterCompensation test

We load a sinusoidal disturbance on the ASM. Amplitude of the oscillation is 200nm PtV. We acquire TN while the mirror is oscillating at different frequencies (from 1 to 200Hz). For each frequency we acquire a TN with jitter compensation loop closed and open. FF gain is set to 0.0, 0.5 and 1.0.

TN	AO Dist	g	FFg	Plot
20150228_060516	sn_120.0	0	1
20150228_060536	sn_120.0	0.2	1
20150228_060551	sn_120.0	0.4	1
20150228_060603	sn_120.0	0.5	1
20150228_060654	sn_150.0	0	1
20150228_060710	sn_150.0	0.2	1
20150228_060728	sn_150.0	0.4	1
20150228_060746	sn_150.0	0.5	1
20150228_060825	sn_200.0	0	1
20150228_060846	sn_200.0	0.2	1
20150228_060902	sn_200.0	0.4	1
20150228_060931	sn_200.0	0.5	1

TN	AO Dist	g	FFg	Plot
20150228_062734	sn_0.0	0	0.5
20150228_062748	sn_0.0	0.6	0.5
20150228_062826	sn_1.0	0	0.5
20150228_062850	sn_1.0	0.6	0.5
20150228_062929	sn_10.0	0	0.5
20150228_062945	sn_10.0	0.6	0.5
20150228_063029	sn_20.0	0	0.5
20150228_063044	sn_20.0	0.6	0.5
20150228_063123	sn_30.0	0	0.5
20150228_063138	sn_30.0	0.6	0.5
20150228_063222	sn_40.0	0	0.5
20150228_063235	sn_40.0	0.6	0.5
20150228_063324	sn_50.0	0	0.5
20150228_063345	sn_50.0	0.6	0.5
20150228_063424	sn_60.0	0	0.5
20150228_063451	sn_60.0	0.6	0.5
20150228_063542	sn_70.0	0	0.5
20150228_063601	sn_70.0	0.6	0.5
20150228_063643	sn_80.0	0	0.5
20150228_063701	sn_80.0	0.6	0.5
20150228_063748	sn_90.0	0	0.5
20150228_063802	sn_90.0	0.6	0.5

TN	AO Dist	g	FFg	Plot
20150228_071059	sn_0.0	0	0
20150228_071127	sn_0.0	0.4	0
20150228_071218	sn_1.0	0	0
20150228_071244	sn_1.0	0.4	0
20150228_071331	sn_10.0	0	0
20150228_071350	sn_10.0	0.4	0
20150228_071427	sn_20.0	0	0
20150228_071443	sn_20.0	0.4	0
20150228_071522	sn_30.0	0	0
20150228_071543	sn_30.0	0.4	0
20150228_071638	sn_40.0	0	0
20150228_071656	sn_40.0	0.4	0
20150228_071738	sn_50.0	0	0
20150228_071757	sn_50.0	0.4	0
20150228_071835	sn_60.0	0	0
20150228_071853	sn_60.0	0.4	0
20150228_071933	sn_70.0	0	0
20150228_071954	sn_70.0	0.4	0
20150228_072033	sn_80.0	0	0
20150228_072052	sn_80.0	0.4	0
20150228_072131	sn_90.0	0	0
20150228_072146	sn_90.0	0.4	0
20150228_072221	sn_120.0	0	0
20150228_072245	sn_120.0	0.4	0
20150228_072328	sn_150.0	0	0
20150228_072356	sn_150.0	0.4	0
20150228_072436	sn_200.0	0	0
20150228_072458	sn_200.0	0.4	0

Loops gains	f_c [Hz]	f_o [Hz]	JCLTF(f_o)
FFg= 0.0, g= 0.4	31	50	4.8
FFg= 0.5, g= 0.6	43	70	3.9
FFg= 1.0, g= 0.5	48	80	2.2

FLAO fiber splitter test

We try to close the loop with FLAO BIN1 through the fiber splitter:

TN	Notes
20150228_131648	G=1.0,0.5,0.5, M=14, 350 counts on QC
20150228_131732
20150228_131801
20150228_132216	1.5,0.5,0.5, PYR loop, 1kHz, 140 counts
20150228_132242
20150228_132312

-- TommasoMazzoni - 04 Mar 2015