1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

RHIC Au operation in Run24

MOPM001
2 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC1.A01 Hadron Colliders Monday Poster Session

Speaker

Kiel Hock (Brookhaven National Laboratory)

Description

The Relativistic Heavy Ion Collider (RHIC) Run 24 was 27 weeks, operating with collisions at the STAR and sPHENIX detectors. The secondary running mode was gold at 100 GeV/u, where there was 3 weeks of operation. The goals of this run were to: reach an intensity of 1.8e9 ions/bunch and fully commission the 56 MHz cavity, ensure sPHENIX systems are ready for Run25,and deliver 1-2e9 minimum bias events for STAR. Beam was delayed 1 week due to two simultaneous failures of essential kicker systems: an AGS extraction bump power supply, and the yellow RHIC abort kicker. Elevated backgrounds at sPHENIX’s MAPS-based VerTeX (MVTX) detector required extensive studies and diagnostics. With a combination of local steering at sPHENIX and a large amplitude bump in the sector 10 and 12 arcs, the background levels with 12 bunches were reduced by a factor of 18. STAR was able to collect over 1.5e9 minimum bias events and the 56 MHz cavity was operated near its full voltage at 700 kV with 1.3e9 ions/bunch. This paper provides a summary of the run and details of the background studies.

Funding Agency

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

Region represented America
Paper preparation format LaTeX

Author

Kiel Hock (Brookhaven National Laboratory)

Co-authors

Eliorah Becker (Brookhaven National Laboratory) Kirsten Drees (Brookhaven National Laboratory) Wolfram Fischer (Brookhaven National Laboratory) Caitlin Giorgio (Brookhaven National Laboratory) Haixin Huang (Brookhaven National Laboratory) Robert Hulsart (Brookhaven National Laboratory) Brendan Lepore (Brookhaven National Laboratory) Chuyu Liu (Brookhaven National Laboratory) Henry Lovelace III (Brookhaven National Laboratory) Gregory Marr (Brookhaven National Laboratory) Al Marusic (Brookhaven National Laboratory) Kevin Mernick (Brookhaven National Laboratory) Chaofeng Mi (Brookhaven National Laboratory) Frederic Micolon (Brookhaven National Laboratory) Robert Michnoff (Brookhaven National Laboratory) Michiko Minty (Brookhaven National Laboratory) John Morris (Brookhaven National Laboratory) Guillaume Robert-Demolaize (Brookhaven National Laboratory) Jon Sandberg (Brookhaven National Laboratory) Vincent Schoefer (Brookhaven National Laboratory) Travis Shrey (Brookhaven National Laboratory) Freddy Severino (Brookhaven National Laboratory) Dannie Steski (Brookhaven National Laboratory) Patrick Talty (Brookhaven National Laboratory) Kin Yip (Brookhaven National Laboratory) Keith Zeno (Brookhaven National Laboratory) Jamie Nagle (University of Colorado Boulder) Kevin Hughes (Brookhaven National Laboratory) John Haggerty (Brookhaven National Laboratory) Cameron Dean (Brookhaven National Laboratory)

Presentation materials

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