Jenne, Hang, Robert Ward, Stefan, Matt, Lisa
Today we spent some more time on ASC
1) We realized that ASB36 has the DC centering and SRM both orthogonal to the BS signal, so this is a better signal to be using for BS than 36A. We swithced to this, and also switched SRM to ASB36 I, since we saw that the error point was good for SRM in full lock when we have MICH controlled with ASB36 Q. This loop is not insensitive to the centering (it is basically parallel), but we seem to be OK.
2) 25999
3) We have the CHARD at high bandwidth in the guardian, although this is quite rough and we need to think about how to engage it more smoothly.
4) We have measured several sensing matrices, Hang will post them.
5)We are able to engage the soft loops even when they all have ofsets of about 0.1, and they converge very slowly without bringing our buildups down, with all the rest of the ASC on. We think this means that we don't (at least not any longer) have a problem with error points changing, but we might still have a problem with loops are cross coupled. We have done this 3 times now.
We are now having trouble with the OMC locking, it seems to be locking on the side of the fringe, even though the dither line is supressed. We tried a bust restore (the computer was restarted today.) but that hasn't solved the problem. We will come back to this tomorow.
sensing mtrx, ct/ct
BS
SRM
SRC2
DC3
DC4
CSOFT
CHARD
DSOFT
DHARD
PRM
PR3
AS_A_DC_PIT
4.22e-07 157
1.01e-06 6
1.59e-06 -6
9.86e-02 4
2.4e-03 -151
3.5e-09 -50
4.8e-09 -18
5.1e-09 138
8.21e-08 150
4.4e-12 -76
5.25e-09 129
AS_A_RF36_I_PIT
3.54e-03 -43
1.47e-03 171
3.77e-03 179
2.74e+02 -175
2.4e+00 132
6.9e-06 152
2.8e-06 21
2.30e-05 151
2.7e-05 -43
2.86e-07 107
2.95e-04 143
AS_A_RF36_Q_PIT
8.34e-03 146
6.6e-04 139
3.23e-03 -140
3.50e+02 -176
6.9e+00 5
2.7e-06 124
2.0e-06 -16
5.38e-05 -29.3
4.06e-05 164
9.26e-07 155
9.4e-05 161
AS_A_RF45_I_PIT
1.58e-03 -29
2.71e-04 -142
1.3e-04 94
1.01e+01 -14
1.5e+00 -132
3.10e-05 -88
4.37e-05 -83
1.64e-05 132
2.66e-05 90
7.15e-08 113
4.31e-05 152
AS_A_RF45_Q_PIT
1.78e-03 151
3.86e-03 4
6.24e-03 -3.1
3.79e+02 6.1
3.1e+00 -142
3.0e-05 -47
3.5e-05 -74
3.74e-05 147
6.56e-04 152.4
1.3e-07 5
1.6e-05 -29
AS_B_DC_PIT
1.88e-07 -48
1.12e-06 -178
6.08e-07 4
1.5e-03 -164
7.70e-02 4
3.2e-09 136
2.5e-09 92
4.8e-09 -14
6.22e-08 -29
7.9e-11 139
4.27e-08 143
AS_B_RF36_I_PIT
2.1e-04 -124
4.36e-03 1
4.51e-03 169
1.9e+00 170
4.35e+02 -175.8
1.27e-05 -23
1.0e-05 170
3.3e-06 157
6.6e-06 -156
7.90e-07 -54
5.52e-04 -31
AS_B_RF36_Q_PIT
8.49e-03 136.6
8.2e-04 -80
2.29e-03 154
1.2e+00 10
3.9e+00 51
2.1e-06 -92
3.8e-06 14
5.25e-05 -34
4.66e-05 143
8.68e-07 -25
1.02e-04 -52
AS_B_RF45_I_PIT
1.13e-03 153
2.74e-04 132
6.54e-04 -33
1.18e+00 124
6.50e+00 0
1.95e-05 91
2.68e-05 94
1.22e-05 -40
2.43e-05 -64
5.98e-08 -77
4.85e-05 -28
AS_B_RF45_Q_PIT
1.24e-03 -49
5.01e-03 179.9
2.54e-03 3
1.8e+01 -170
3.23e+02 6
4.9e-05 118
6.09e-05 97
3.78e-05 -36
5.93e-04 -28
1.3e-07 103
1.23e-04 141
AS_C_PIT
1.32e-07 -82
6.43e-07 177
1.19e-06 -1
6.4e-04 -161
2.9e-04 126
1.5e-09 -149
2.7e-09 -84
9.4e-10 19
2.15e-08 -26
5.54e-11 125
4.33e-08 142
REFL_A_DC_PIT
5.6e-07 83
6.8e-08 66
2.2e-06 72
1.9e-03 -147
2.6e-02 0
6.2e-09 -111
3.8e-08 162
3.1e-08 -74
1.2e-07 -69
4.1e-10 128
6.05e-08 147
REFL_A_RF9_I_PIT
7.2e-04 -59
5.6e-05 -116
5.3e-04 170
1.3e+00 -135
1.3e+01 -166
8.7e-06 -23
8.50e-05 -26
1.1e-05 36
4.7e-05 80
5.1e-07 148
2.24e-04 -29
REFL_A_RF9_Q_PIT
1.0e-04 109
3.3e-05 -14
2.4e-04 89
6.3e-01 -123
8.4e-01 -146
4.2e-06 -52
2.3e-05 -26
3.8e-06 -80
1.2e-05 30
1.9e-07 137
2.3e-05 142
REFL_A_RF45_I_PIT
1.3e-03 -165
1.0e-03 125
4.6e-03 -57
3.3e-01 -35
2.1e+01 162
1.4e-05 104
1.0e-04 -27
3.6e-05 78
6.5e-05 116
2.61e-06 147.5
2.29e-04 153
REFL_A_RF45_Q_PIT
7.8e-04 -105
2.0e-04 72
6.8e-04 127
3.2e-01 -142
2.5e+00 -75
2.3e-06 -92
1.7e-05 -25
2.3e-06 -32
6.3e-06 28
2.5e-07 8
7.6e-05 116
REFL_B_DC_PIT
3.4e-07 2
4.9e-08 -113
1.9e-07 87
1.2e-03 -165
8.9e-03 -100
5.6e-09 -24
2.0e-08 175
1.1e-08 -93
9.5e-09 -130
1.1e-10 0
3.02e-08 -31
REFL_B_RF9_I_PIT
1.0e-03 -11
1.6e-04 10
3.4e-04 47
1.0e+00 121
9.1e+00 -53
2.2e-05 -25
8.31e-05 -24
1.5e-05 -97
1.8e-05 -48
1.84e-06 -68
6.18e-04 -32.0
REFL_B_RF9_Q_PIT
2.1e-04 -5
4.8e-05 162
1.5e-04 18
3.0e-01 117
2.6e+00 -38
4.2e-06 -26
1.4e-05 -24
2.6e-06 -116
3.4e-06 -88
4.49e-07 -62
1.20e-04 -31
REFL_B_RF45_I_PIT
6.8e-04 -172
6.5e-04 -5
2.6e-03 123
8.9e-01 136
1.1e+01 -37
7.3e-06 -52
8.34e-05 -23
2.2e-05 -100
2.9e-05 -63
1.3e-06 -40
4.18e-04 145
REFL_B_RF45_Q_PIT
1.1e-03 107
1.1e-03 -50
2.72e-03 135
2.4e-01 175
4.0e+00 -78
1.1e-06 -165
3.29e-05 -25
6.9e-06 -111
4.6e-06 67
1.13e-06 -23
2.03e-04 158
POP_A_PIT
8.9e-09 152
4.36e-09 9
3.1e-09 61
6.4e-06 119
1.4e-04 169
7.9e-11 -46
1.81e-09 -25
9.2e-11 25
5.8e-10 -175
2.54e-11 119
4.09e-09 146
POP_B_PIT
8.1e-09 -44
2.8e-09 -165
5.6e-09 -39
1.2e-05 -122
1.6e-05 -49
4.9e-11 -93
9.00e-10 154
1.1e-10 169
4.8e-10 24
5.29e-11 123
2.81e-09 -32
X_TR_A_PIT
2.7e-09 42
1.3e-09 -27
4.9e-09 78
9.1e-05 11
2.0e-04 -76
2.0e-11 -165
3.02e-09 153
4.6e-11 162
2.96e-09 159
6.9e-13 -174
3.81e-10 145
X_TR_B_PIT
2.0e-09 97
5.2e-10 -8
3.9e-09 22
7.7e-05 12
3.6e-05 -93
9.8e-11 164
2.81e-09 152
1.2e-10 153
2.77e-09 153
3.7e-14 14
3.43e-10 145
Y_TR_A_PIT
1.5e-09 112
1.72e-09 165
2.0e-09 130
1.14e-04 -171
2.0e-05 -117
2.09e-10 152
2.70e-09 151
1.90e-10 -34
2.68e-09 -31
4.6e-13 -86
3.88e-10 143
Y_TR_B_PIT
9.8e-10 11
1.29e-09 167
5.8e-10 167
5.57e-05 -176
1.9e-05 -172
4.29e-10 148
4.36e-10 151
4.36e-10 -32
4.78e-10 -36
5.9e-13 -34
1.04e-10 134
AS_A_RF90_PIT
5.1e-07 -33
2.3e-07 -179
3.5e-07 -22
1.2e-02 16
1.3e-02 41
1.7e-08 111
6.0e-09 -157
2.5e-08 146
4.9e-08 -27
2.1e-10 -68
2.29e-08 158
AS_B_RF90_PIT
2.0e-07 135
4.1e-07 170
2.7e-06 11
2.2e-03 146
2.7e-02 60
4.4e-09 -7
3.2e-08 155
3.3e-08 -50
1.0e-07 -122
2.5e-10 -79
9.2e-09 132
In the matrix, each element is in the format "%e %f"%(ct/ct, phase). The grey elements have low coherence (<0.6).
I confirmed that OMC could be locked manually in a single bounce configuration with 20 W PSL. The angular dither loops was functional as well. I did not find any obvious faults or mis-settings.
In full lock with 2 W PSL, the carrier power is for some reason too small by more than a factor of two according to a threshold value in the OMC guardian. I could confirm this by chainging the size of the DARM offset as well as the peak height of the violine modes. The 45 MHz sidebands seem as large as 15mA in OMC DCPD SUM while the carrier is about 6 mA unless with the nominal DARM offset of 3e-5 counts at the input of LSC-DARM1.
Another sensing matrix, calibrated in W/rad. On the sensor side, only the AS/REFL WFS' were calibrated, based on the matlab model /ligo/svncommon/NbSVN/aligonoisebudget/trunk/Dev/DRFPMI/ASC/ASC_NB/DRFPMI_ASC_simple_MK18.slx
sensing mtrx, W/rad
BS
SRM
SRC2
DC3
DC4
CSOFT
CHARD
DSOFT
DHARD
PRM
PR3
INP1
AS_A_DC_PIT
1.59e-02
160
3.31e-03
6
5.30e-03
-6
2.12e-02
4
5.1e-04 -150
6.7e-03 -51
9.2e-03 -18
9.8e-03 140
1.57e-01
150
2.8e-08 -76
2.37e-04
130
1.1e-07 -53
AS_A_RF36_I_PIT
1.33e+02
-44
4.97e+00
170
1.26e+01
180
5.79e+01
-180
5.1e-01 130
1.32e+01
150
5.4e+00 22
4.40e+01
150
5.2e+01 -43
1.87e-03
110
1.37e+01
140
8.08e-04
88
AS_A_RF36_Q_PIT
3.14e+02
150
2.2e+00 140
1.06e+01
-140
7.50e+01
-180
1.5e+00 5
5.2e+00 120
3.8e+00 -16
1.03e+02
-29.0
7.85e+01
160
5.99e-03
160
4.3e+00 160
2.50e-03
-85
AS_A_RF45_I_PIT
6.06e+01
-29
8.94e-01
-140
4.3e-01 95
2.14e+00
-15
3.2e-01 -130
5.93e+01
-89
8.42e+01
-83
3.06e+01
130
5.17e+01
91
4.57e-04
110
1.96e+00
150
2.67e-04
110
AS_A_RF45_Q_PIT
6.82e+01
150
1.29e+01
4
2.05e+01
-3.1
8.15e+01
6.1
6.6e-01 -140
5.7e+01 -47
6.7e+01 -74
7.08e+01
150
1.26e+03
150.0
8.4e-04 5
7.3e-01 -29
4.9e-04 -88
AS_B_DC_PIT
7.20e-03
-48
3.64e-03
-180
2.02e-03
4
3.2e-04 -160
1.65e-02
4
6.1e-03 140
4.8e-03 93
9.2e-03 -15
1.19e-01
-30
5.1e-07 140
1.96e-03
140
2.5e-07 100
AS_B_RF36_I_PIT
8.0e+00 -120
1.46e+01
1
1.49e+01
170
4.1e-01 170
9.43e+01
-180.0
2.49e+01
-23
1.9e+01 170
6.3e+00 160
1.3e+01 -160
5.08e-03
-54
2.51e+01
-31
7.1e-04 -74
AS_B_RF36_Q_PIT
3.22e+02
140.0
2.7e+00 -81
7.62e+00
150
2.6e-01 11
8.4e-01 52
4.0e+00 -93
7.3e+00 14
9.95e+01
-35
9.00e+01
140
5.60e-03
-25
4.56e+00
-53
1.7e-03 100
AS_B_RF45_I_PIT
4.17e+01
150
8.94e-01
130
2.15e+00
-33
2.57e-01
120
1.39e+00
0
3.83e+01
91
5.17e+01
94
2.30e+01
-40
4.59e+01
-65
3.86e-04
-78
2.19e+00
-28
2.42e-04
-81
AS_B_RF45_Q_PIT
4.55e+01
-50
1.66e+01
180.0
8.28e+00
3
3.9e+00 -170
6.86e+01
6
9.4e+01 120
1.17e+02
97
7.27e+01
-37
1.13e+03
-28
8.4e-04 100
5.47e+00
140
8.9e-04 110
AS_C_PIT
4.93e-03
-82
2.12e-03
180
3.97e-03
-1
1.4e-04 -160
6.2e-05 130
2.9e-03 -150
5.2e-03 -84
1.8e-03 19
4.21e-02
-26
3.54e-07
130
1.96e-03
140
2.02e-07
100
REFL_A_DC_PIT
2.1e-02 83
2.3e-04 66
7.3e-03 73
4.1e-04 -150
5.6e-03 0
1.2e-02 -110
7.3e-02 160
5.9e-02 -75
2.3e-01 -70
2.6e-06 130
2.74e-03
150
1.94e-05
-84
REFL_A_RF9_I_PIT
2.7e+01 -59
1.9e-01 -120
1.8e+00 170
2.8e-01 -140
2.8e+00 -170
1.7e+01 -23
1.63e+02
-26
2.1e+01 36
9.0e+01 80
3.3e-03 150
1.00e+01
-30
2.59e-01
-81.0
REFL_A_RF9_Q_PIT
3.8e+00 110
1.1e-01 -15
7.9e-01 90
1.4e-01 -120
1.8e-01 -150
8.0e+00 -52
4.4e+01 -26
7.3e+00 -81
2.3e+01 31
1.2e-03 140
1.0e+00 140
5.25e-02
-81
REFL_A_RF45_I_PIT
4.9e+01 -170
3.3e+00 130
1.5e+01 -58
7.1e-02 -35
4.5e+00 160
2.7e+01 100
1.9e+02 -28
6.9e+01 78
1.2e+02 120
1.67e-02
150.0
1.05e+01
150
2.18e-01
-82
REFL_A_RF45_Q_PIT
3.0e+01 -110
6.6e-01 73
2.3e+00 130
6.9e-02 -140
5.4e-01 -75
4.4e+00 -92
3.3e+01 -25
4.4e+00 -32
1.2e+01 28
1.6e-03 8
3.5e+00 120
4.36e-02
-78
REFL_B_DC_PIT
1.3e-02 2
1.6e-04 -110
6.3e-04 88
2.6e-04 -170
1.9e-03 -100
1.1e-02 -25
3.8e-02 180
2.1e-02 -93
1.8e-02 -130
7.1e-07 0
1.37e-03
-32
8.1e-06 100
REFL_B_RF9_I_PIT
3.8e+01 -11
5.3e-01 11
1.1e+00 47
2.1e-01 120
2.0e+00 -53
4.2e+01 -25
1.59e+02
-24
2.9e+01 -97
3.4e+01 -48
1.16e-02
-68
2.83e+01
-32.0
2.02e-01
97
REFL_B_RF9_Q_PIT
8.0e+00 -5
1.6e-01 160
5.0e-01 18
6.4e-02 120
5.6e-01 -39
8.0e+00 -26
2.7e+01 -24
5.0e+00 -120
6.5e+00 -88
2.90e-03
-63
5.47e+00
-31
5.49e-02
98
REFL_B_RF45_I_PIT
2.6e+01 -170
2.2e+00 -5
8.6e+00 120
1.9e-01 140
2.4e+00 -37
1.4e+01 -52
1.59e+02
-23
4.2e+01 -100
5.6e+01 -64
8.4e-03 -40
1.92e+01
150
1.78e-01
97
REFL_B_RF45_Q_PIT
4.2e+01 110
3.6e+00 -51
8.94e+00
140
5.1e-02 180
8.6e-01 -79
2.1e+00 -170
6.32e+01
-26
1.3e+01 -110
8.8e+00 68
7.08e-03
-24
9.12e+00
160
6.46e-02
97
POP_A_PIT
3.4e-04 150
1.46e-05
9
1.0e-05 61
1.4e-06 120
3.0e-05 170
1.5e-04 -46
3.45e-03
-26
1.8e-04 25
1.1e-03 -180
1.61e-07
120
1.87e-04
150
7.59e-08
100
POP_B_PIT
3.1e-04 -45
9.3e-06 -170
1.9e-05 -39
2.6e-06 -120
3.4e-06 -50
9.4e-05 -94
1.72e-03
150
2.1e-04 170
9.2e-04 24
3.41e-07
120
1.28e-04
-33
1.21e-07
99
X_TR_A_PIT
1.0e-04 43
4.3e-06 -28
1.6e-05 79
2.0e-05 11
4.3e-05 -76
3.8e-05 -170
5.74e-03
150
8.8e-05 160
5.74e-03
160
4.4e-09 -170
1.73e-05
150
8.9e-09 25
X_TR_B_PIT
7.6e-05 97
1.7e-06 -9
1.3e-05 22
1.7e-05 13
7.7e-06 -93
1.9e-04 160
5.36e-03
150
2.3e-04 150
5.36e-03
150
2.4e-10 15
1.55e-05
150
3.7e-09 25
Y_TR_A_PIT
5.7e-05 110
5.63e-06
170
6.6e-06 130
2.36e-05
-170
4.3e-06 -120
4.02e-04
150
5.17e-03
150
3.64e-04
-34
5.17e-03
-31
3.0e-09 -86
1.78e-05
140
1.1e-08 63
Y_TR_B_PIT
3.7e-05 12
4.31e-06
170
1.9e-06 170
1.20e-05
-180
4.1e-06 -170
8.23e-04
150
8.42e-04
150
8.42e-04
-32
9.19e-04
-37
3.8e-09 -34
4.56e-06
130
1.1e-08 73
AS_A_RF90_PIT
1.9e-02 -34
7.6e-04 -180
1.2e-03 -22
2.6e-03 16
2.8e-03 42
3.3e-02 110
1.1e-02 -160
4.8e-02 150
9.4e-02 -27
1.4e-06 -69
1.05e-03
160
1.1e-06 95
AS_B_RF90_PIT
7.6e-03 140
1.4e-03 170
8.9e-03 12
4.7e-04 150
5.8e-03 61
8.4e-03 -7
6.1e-02 160
6.3e-02 -51
1.9e-01 -120
1.6e-06 -80
4.2e-04 130
1.1e-06 50
Sheila, Rob
The OMC locking trouble turned out to be due to highly excited violin modes saturating the whitening filters for the OMC DCPD signals.