RHIC Au operation in Run24
Year: 2025
Type: conference-paper
Abstract: 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.
Source: JACOW
Authors: Hock,Kiel, Becker,Eliorah, Drees,Kirsten, Fischer,Wolfram, Giorgio,Caitlin, Huang,Haixin, Hulsart,Robert, Lepore,Brendan, Liu,Chuyu, Lovelace III,Henry, Marr,Gregory, Marusic,Al, Mernick,Kevin, Mi,Chaofeng, Micolon,Frederic, Michnoff,Robert, Minty,Michiko, Morris,John, Robert-Demolaize,Guillaume, Sandberg,Jon, Schoefer,Vincent, Shrey,Travis, Severino,Freddy, Steski,Dannie, Talty,Patrick, Yip,Kin, Zeno,Keith, Nagle,Jamie, Hughes,Kevin, Haggerty,John, Dean,Cameron
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7104269656
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