Roger Dixon Roger Dixon, head of the Accelerator Division, wrote this column. The era of the Tevatron is about to come to a close. The Tevatron has certainly been the showcase of our physics program for more than 25 years, but it is only one of nine accelerators and storage rings that make up our complex. Fermilab’s plan for the future includes upgrading its lower-energy accelerators and using them for new experiments including the NOvA neutrino experiment and several other…