Energy Saver Prototype Accelerating Resonator

A fixed frequency RF accelerating resonator has been built and tested for the Fermilab Energy Saver. Table I shows the design parameters and prototype resonator test results. The resonator features a high permeability nickel alloy resistor which damps unwanted modes and corona rolls designed with the aid of the computer code SUPERFISH. In bench measurements, the prototype resonator has achieved peak accelerating voltages of 500 kV for a 1% duty cycle and CW operation at 360 kV. The prototype has also been successfully operated with beam in the FNAL Main Ring.