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The linear accelerator (LINAC) at the Los Alamos Neu-tron Science Center(LANSCE) consists of Pre-buncher, Main-Buncher, low-energy beam transport(LEBT), four 201.25-MHz Drift Tube Linacs (DTLs) and forty-four 805-MHz CoupledCavity Linacs (CCLs). As a part of the upcoming LANSCE Modernization project,low-level RF (LLRF) systems of four 201-MHz DTLs and twenty-six 805-MHz SCLshave been digitized. Hence the net-work-based control of the cavity field andRF commis-sioning are possible. Each LLRF and high-power RF (HPRF) systems havemany process variables (PVs) lo-cated on different computer control screensprovided by the Extensible Display Manager (EDM). Several MATLAB m-scripts havebeen developed to efficiently process the necessary PVs while auto-start,ampli-tude/phase calibration, gain tuning of the cavity field feedbackcontrollers, gain and phase tuning of the beam feedforward controllers, andhigh power RF trip recovery, processes are configured and validated. This paperad-dresses the sequence of RF commissioning of the LANSCE LINAC from the timeof RF-turn-on to beam feedforward control and its relevant EDMs and MATLABm-scripts.

MATLAB Scripts for RF Commissioning at the LANSCE LINAC