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• In the Tevatron, protons are injected from a ring that uses conventional magnets into the final superconducting ring with about 150 GeV. They then gain roughly 1 MeV per orbit as they move around the final ring. (a) Roughly how many orbits does a proton have to make in the final ring to gain the full energy of 1 TeV? (b) Given that the ring has radius 1 km, how far does the proton travel inside the final ring, and how long does this final acceleration take?
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