10–15 Aug 2025
SAFE Credit Union Convention Center
America/Los_Angeles timezone

A higher momemtum aperture lattice proposed for the sPHENIX background problem

TUP006
12 Aug 2025, 16:00
2h
SAFE Credit Union Convention Center

SAFE Credit Union Convention Center

1401 K St, Sacramento, CA 95814
Poster Presentation MC1 - Colliders and other Particle and Nuclear Physics Accelerators TUP: Tuesday Poster Session

Speaker

Chuyu Liu (Brookhaven National Laboratory)

Description

During the 2024 Au+Au 100 GeV physics run, the sPHENIX MVTX detector experienced background issues originating from the Yellow beam, leading to frequent auto-recoveries during streaming mode operation. One hypothesis attributes the background to the loss of off-momentum particles. An evaluation of the momentum apertures in both RHIC rings revealed that the Yellow ring had a worse momentum acceptance compared to the Blue ring. To address this, a new lattice design with a reduced W-function was proposed. This report presents the momentum aperture comparison between the two rings, the proposed new lattice design considering additional constraints, and the resulting momentum and dynamic apertures.

Funding Agency

Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.

I have read and accept the Privacy Policy Statement Yes
Please consider my poster for contributed oral presentation Yes
Would you like to submit this poster in student poster session on Sunday (August 10th) No

Authors

Chuyu Liu (Brookhaven National Laboratory) Guillaume Robert-Demolaize (Brookhaven National Laboratory) Xiaofeng Gu (Brookhaven National Laboratory) Yun Luo (Brookhaven National Laboratory)

Presentation materials

There are no materials yet.