I put together this  T1400371 procedure for aligning the 90/10 BS in HAM3. It describes the way they did the alignment at Livingston (Option 1, green beam from HAM1, IOTR table would need to move) and the way that Keita would like to do it here (IR beam from HAM3, no need to move IOTR).


All the parts needed are "mostly" ready. Here is a summary:

- BS 90/10, post, clamp (mirror is cleaned and installed in mirror mount)
- V-shaped dump, post, clamp (ready)
- IR laser diode source (in optics lab)
- spare clean sled (in optics lab, can be used to mount the laser source and collimator in HAM3, if needed)
- 2 spare 2" HR 1064 clean optics (on optics table in OSB optics lab - I left there also a clean 2" HR 532)
- Missing: IO style posts for mounting the steering optics (Corey and Cheryl working on it)