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User name Yi Qiang
Log entry time 19:36:13 on November 08, 2008
Entry number 247639
keyword=Suggestions on target spin flip while moving targetMoving the target to location other than production position (3He) will introduce inaccurate NMR measurements and larger AFP loss due to field gradient. This will bring trouble to interpolate polarization for the production data in between the target movements. (see picture taken by Chiranjib, target was moved to optics from 26 to 30)
So I suggest to do a manual flip (NMR measurement) every time before we move target from production and do another one after we move target back to production before taking data.
I also suggest to pause the automatic flip while target is in other
places to reduce AFP loss.
A copy of this log entry has been emailed to: jpchen@jlab.org, chiran@jlab.org, jinhuang@jlab.org,jkatich@jlab.org, zhangyi@jlab.org
Figure 1
