Pulsed Power Performance Of The New RLA

The Recirculating Linear Accelerator (RLA) is returning to operation with a now relativistic electron beam (REB) injector and a modified accelerating cavity. Upon completion of our pulsed-power test program, we will capture the injected beam on an Ion Focussed Regime (IFR) guiding channel in either a spiral or a closed racetrack drift tube. The relativistic beam will recirculate for up to four passes through two accelerating cavities, in phase with the ringing cavity voltage, and increase to 8-12 MeV before being extracted. We designed the inductively isolated four- stage injector to produce a REB of 4 MeV, 10-20 kA, and a FWHM of 40-55 ns. The three-line radial cavity is being modified to improve the 1-MV accelerating voltage pulse shape while an advanced cavity design study is in progress. The actual versus predicted pulsed-power performance of the RLA and the associated pulse charging and compression hardware are discussed.