TJ Shaffer, Camilla Compton
- Photo of ETMY reflected HWS beam with ITMY aligned (getting a LOT of ITM beam which isn't unusal)
- Photo of ETMY reflected HWS beam with ITMY misaligned
- Photo of ISCTEY outgoing beam before changes. We set up a temporary retro-reflector after the ALS iris and aligned back to the camera with the cameras frequency set to 57Hz (nominal now is 1Hz) wiki.
- We removed HWS-M1B and M1C (drawing) to remove the dog leg that has caused us some clipping. Before and after photos. The outgoing beam still looks like it's clipping somewhere but I think we've improved it. More work still needs to be done on alignment and we felt constrained on the angle we could send the beam though ALS-M11 (the ALS/HWS BS). With the beam at a 45deg angle to the BS the beam was fully reflected. We had to have a steeper angle to get any transmitted beam - maybe this is a property from sending a polarized beam through a polarizing BS?
- Photo of ISCTEY outgoing beam after dog leg removed.
- Photo of ETMY reflected HWS beam after dog leg removed with ITMY aligned (camera back to 1Hz). Hartmann plate left off.