Zach and Koji,
We finally aligned the incident beam enough close to the center of the all MC mirrors! Uraaaaah!
MC1H = -0.12mm
MC1V = -0.13mm
MC2H = -0.15mm
MC2V = +0.14mm
MC3H = -0.14mm
MC3V = -0.11mm
The aperture right before the vacuum window has been adjusted to the beam position. This will ensure that any misalignment on the PSL table can have the correct angle to the mode cleaner as far as it does resonate to the cavity. (This is effectively true as the small angle change produces the large displacement on the PSL table.)
If we put an aperture at the reflection, it will be perfect.
Now we can remove the MZ setup and realign the beam to the mode cleaner!
Method:
- The beam axis rotation has been adjusted by the method that was used yesterday.
Differential: SM2Y and IM1Y
Common: SM2Y only
- We developped scripts to shift the MC2 spot without degrading the alignment.
/cvs/cds/caltech/users/zach/MCalign/MC2_spot/MC2_spot_up
/cvs/cds/caltech/users/zach/MCalign/MC2_spot/MC2_spot_down
/cvs/cds/caltech/users/zach/MCalign/MC2_spot/MC2_spot_left
/cvs/cds/caltech/users/zach/MCalign/MC2_spot/MC2_spot_right
These scripts must be upgraded to the slow servo by the SURF students.
- These are the record of the alignment and the actuator balances
C1:SUS-MC1_PIT_COMM = 2.4005
C1:SUS-MC1_YAW_COMM = -4.6246
C1:SUS-MC2_PIT_COMM = 3.4603
C1:SUS-MC2_YAW_COMM = -1.302
C1:SUS-MC3_PIT_COMM = -0.8094
C1:SUS-MC3_YAW_COMM = -6.7545
C1:SUS-MC1_ULPIT_GAIN = 0.989187
C1:SUS-MC1_ULYAW_GAIN = 0.987766
C1:SUS-MC2_ULPIT_GAIN = 0.985762
C1:SUS-MC2_ULYAW_GAIN = 1.01311
C1:SUS-MC3_ULPIT_GAIN = 0.986771
C1:SUS-MC3_ULYAW_GAIN = 0.990253
|