Speaker
Description
During the Relativistic Heavy Ion Collider (RHIC) Run 24 operations with
100 GeV/u Au beams, significant backgrounds were observed at the sPHENIX
MAPS-based VerTeX (MVTX) detector. Extensive studies were performed dur-
ing RHIC operation to diagnose the source of the background. Through track-
ing simulations, the primary source of the backgrounds were found and removed
prior to beam operations for Run25. The removal of the obstruction resulted in
a reduction of backgrounds by an order of magnitude, similar to the best miti-
gation found during Run24. The tracking simulations that showed the location
of the obstruction and the resulting background reduction following its removal
are shown.
Funding Agency
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
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