By adding an electron ring and other accelerator components to its existing Relativistic Heavy Ion Collider (RHIC), Brookhaven National Lab in Upton, New York, US, would create a high-energy electron-ion collider (EIC) to help explain what makes matter stick together.
Quantum chromodynamics (QCD) has led nuclear scientists to develop new tools that reveal the interactions of quarks and gluons inside protons and neutrons. For researchers at Brookhaven, these new tools could be further enhanced by the EIC. The EIC would be unique among such facilities worldwide, due to the 5- to 10-billion-electron-volt (GeV) electron ring inside the RHIC tunnel.