2012年4月24日 · RHIC is the world's only machine capable of colliding beams of polarized protons to investigate the 'missing' spin of the proton. Before high-speed packets of heavy ions can be brought into collisions with one another, they first …

The Relativistic Heavy Ion Collider (RHIC / ˈ r ɪ k /) is the first and one of only two operating heavy-ion colliders, and the only spin-polarized proton collider ever built. Located at Brookhaven National Laboratory (BNL) in Upton, New York, and used by an international team of researchers, it is the only operating particle collider in the US.

The Relativistic Heavy Ion Collider (RHIC) is a world-class particle accelerator at Brookhaven National Laboratory where physicists are exploring the most fundamental forces and properties of matter and the early universe. RHIC accelerates beams of particles (e.g., the nuclei of heavy atoms such as gold) to nearly the speed of light, and ...

In RHIC, the beams get a final accelerator “kick up” in energy from radio waves. Once accelerated, the ions can "orbit" inside the rings for hours. RHIC can also conduct colliding-beam experiments with polarized protons.

Summary presentation and papers: C. Liu, "RHIC Beam Energy Scan II operation in 2020", RHIC Retreat (15 October 2020); K. Zeno, "The 2020 low energy gold run in the injectors", BNL-220777-2021-TECH, C-A/AP/638 (2020); C. Liu, E. Beebe, M. Blaskiewicz, D. Bruno, K.A. Brown, K.A. Drees, A.V. Fedotov, W. Fischer, C.J. Gardner, X. Gu, T. Hayes, H ...

Recently, we measured exclusive J/ψ, ψ(2s), and di-electron pair photoproduction in Au+Au ultra-peripheral collisions at RHIC using the STAR detector. For J/ψ production, both coherent (nucleus remains intact) and incoherent (nucleus breaks up) processes were observed.

PHENIX, the Pioneering High Energy Nuclear Interaction eXperiment, is the largest of the four experiments that have taken data at the Relativistic Heavy Ion Collider. Data-taking was finished in 2016 and the PHENIX Collaboration is currently …

• Operation of RHIC: exceeded accelerator availability goals • First (in the world) electron cooling with RF accelerated electron bunches demonstrated in support of Beam Energy Scan II - LEReC, presentation by A. Fedotov

2009年7月8日 · RHIC is the first machine in the world capable of colliding heavy ions, which are atoms which have had their outer cloud of electrons removed. RHIC primarily uses ions of gold, one of the heaviest common elements, because its nucleus is densely packed with particles.

Relativistic Heavy Ion Collider (RHIC) at BNL. The electron system will include a highly polarized room temperature photo-electron gun and a 400 MeV linear accelerator to be installed in an existing available straight section of the RHIC tunnel. It will include a transfer line that