A Future Muon-Ion Collider at Brookhaven National Laboratory

There has been significant discussion in the community regarding a future μ⁺μ^- collider. While such a facility is still decades away from realization, it is also understood that significant technological development and feasibility demonstrations are necessary at lower beam energies. Here we propose such a possibility coupled with a rich physics program. We propose a future Muon-Ion Collider that would serve as a natural extension to the EIC program currently planned in the 2030’s and 40’s. We envision this collider would be implemented as an upgrade to the EIC, with μ beam energies between 18 GeV and 200 GeV. In this presentation we discuss the physics reach of such a collider, which could reach x≈10^-5 with a luminosity approaching 10³³ cm⁻² s⁻¹. We argue that the physics reach of such a program is excellent and comparable to the LHeC, and it will facilitate accelerator technology development for the future muon collider.