No beam until 11:00pm, then started the studies of ion polarimeter
with unpol H and D. The results were attached.
For H, there is a mysterious mass=3 peak. During D measurement, ligit
was unstable, causing one HV keeps tripping. If possible, neet to
check the connection of wires for ion lenses inside the vacuum pipe.
More study need to be done tomorrow.
T.Z. & Y.X.
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