HUPTI is the eighth proton facility in the U.S. At full operation, HUPTI is expected to treat approximately 1,500 patients per year. HUPTI's 200-ton cyclotron originates and spins the protons at 60 percent of the speed of light, sending the resulting beam down a beam-line to the treatment room. The actual treatment of protons lasts less than two minutes. Patients are treated five days a week, from one to nine weeks.