Canadian high energy electron ring (CHEER): Exploring the microcosm at 10−18 m

A large group of Canadian physicists has been studying the feasibility of building an electron storage ring (CHEER) tangent to a proton accelerator to study electron–quark collisions at extremely high energies. This article provides an overview of the physics, machine, and detector developments of the CHEER project along with a brief summary of the status of the project.