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Every time a new ROI has been selected, one has to grab new references.
HeNe: Manual alignment procedure
- Find reference in the laser alignment reference tab
Note the coordinates are for NEGATIVE, NEGATIVE which indicates the direction of the axes.
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IR: Matching IR to HeNe beam path
Now after aligning the HeNe, we can proceed with using the IR laser and overlapping its beam path with the HeNe.
- Check references on DMNear and Far for both pulsed and CW
- Stop/Pause auto aligner
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- Close Iris near the DM to -5 mm (now motorised).
- Increase exposure on B0 and B1 to 2 s (or see Laser cameras and alignment references)
- Now someone has to bring on the laser in the tunnel (close laser curtains and turn key)
- Open shutter on Laser → LI20→ Laser and then the shutter next to LSS EPS EPICS from High to Low
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- For main beam alignment, align now to references on CompNear/Far and PBNear/Far. Suitable iris setting is -10 mm.