17–22 May 2026
C.I.D
Europe/Zurich timezone

Determination of the sPHENIX background source with tracking

WEP1308
20 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC1.A01: Hadron Colliders Poster session

Speaker

Kiel Hock (Brookhaven National Laboratory)

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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Author

Kiel Hock (Brookhaven National Laboratory)

Co-authors

Brendan Lepore (Brookhaven National Laboratory) Guillaume Robert-Demolaize (Brookhaven National Laboratory) Haixin Huang (Brookhaven National Laboratory) Kevin Mernick (Brookhaven National Laboratory) Kirsten Drees (Brookhaven National Laboratory) Travis Shrey (Brookhaven National Laboratory) Vincent Schoefer (Brookhaven National Laboratory)

Presentation materials

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