HAM4 HWS STEER M1 4" mirror mount replacement and DCBS 2" Siskiyou mount install and alignment plan

Per Workpermit 7158

Our plan of action today:

Prep work:

1. Remove PR3 baffle [TJ]

2. Wipe down goosenecks and assemble them with corner cubes [Jason]

3. TVo finds out channels to use to steer BS and SR3

 

The order of operations will be as follows:

1. Jason into BSC1 to align laser to ITMY

2. TJ into HAM5 to guide Jason into aligning laser to cross-hairs on SR3

3. TJ removes cross-hairs from SR3 and transfers to PR3 in HAM2. Close HAM5 cover.

4. TJ guides TVo (on computer) to steer BS so alignment laser is centered on PR3 cross hairs. Close HAM2 cover

5. Jason attaches first gooseneck to BS TMD and centers the corner cube on the BS reflection beam with iris mostly closed.

6. Jason attaches second gooseneck onto BS TMD and centers the corner cube on transmission through BS (heading to ITMX).

7. Aidan [HAM4 South] guides TVo to adjust SR3 alignment so main laser is aligned to the center of SR2.

8. Aidan replaces and aligns HWS STEER M1 making sure optic is in the correct position. Jon [HAM4 North] guides alignment to HWSX STEER M2

9. Jon remove 2” Siskioyu mount from HAM4 ISI OPLEV

10. Jon installs replacement DCBS mount on HWSX and aligns reflection halfway down the scraper baffle. Make sure laser is centered on the DCBS

11. Jon repeats step 9 for the HWSY path. Laser might be 6mm low from center on DCBS but beam is still about 2-3 beam diameter from the edge.

12. Jason removes corner cubes from BS

13. TJ removes cross-hairs from PR3 and reinstalls baffle.