Beam Position on Target
From Hall A Wiki
- Check vertical beam position on target by centering X' (θtg) from the central sieve-slit hole.
- Horizontal target scan (LH2, dummy):
- With the liquid hydrogen target, move beam from 'nominal' center by -5mm, -2.5 mm, 0 mm, 2.5 mm, 5 mm and take 200k events.
- Scan beam to find edges of the dummy target.