St1 Before |
St1 After | St2 Before | St2 After |
X 6959nm | 41458 | -9643 | 2702 |
Y 8935nm | 9155 | 253 | 478 |
Z -22709nm | -22563 | -10660 | -10743 |
Rx 39467nrad | 39195 | 10198 | 10083 |
Ry -7904nrad | -5523 | 5845 | 7101 |
Rz 19481nrad | 20104 | 4123 | 4482 |
To help make the isolation of the ETMx less troublesome, this morning I reset the ETMX ISI position loop alignment targets to the tilted location. This way the ISI will not drive back to the untilted position putting larger outputs on the ISI and reliably running up the trilliums, tripping the WDs. If the local to cart matrices are somewhat correct, the position/alignment change is small & so far OK. Adding theStage1 & Stage2 cart position changes gives a 46um position shift of the ISI Optical Table with <4urads on the Ry. All the other dofs combine to 1um or 1 urad or less. Sheila did spend some time realigning but the ITM wasn't in nominal isolation either so that might have been hampering efforts there. Once the ITM was Isolated properly, the green locked much better.
So above is the before and afters.