Accelerator energy conservation at Fermilab

The Fermilab Accelerator Division has adopted an energy conservation plan in an attempt to reduce power levels during extended periods of beam downtime. The plan was implemented for the first time during the 1990 Fixed Target program. The authors describe how accelerator power levels were reduced, and attempts to assess the impact of the plan on accelerator operations and energy consumption. The modes of operation are discussed. Site power consumption data are given. Operational experience is discussed. Data on power savings are included. A substantial amount of energy was saved with minimal impact on machine reliability.<>