There was an indication that the beam position was moved on Monday (day 096, April 6) morning around 10am. We looked at the runs taken in the store Monday night through Tuesday morning. Previous studies are here:
https://drupal.star.bnl.gov/STAR/blog/dongx/vpdmb-purity-check-and-vertex-position-check-update-march-31

Here are the findings from recent runs:

Conclusion:
- It doesn't seem the movement if done was sufficient to correct the beam position to the center of PXL. Reflected on both the hit density and the offline vertex distributions.

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