Speaker
Description
As part of the modernization of the Los Alamos Neutron Science Center (LANSCE), a digital low level RF (LLRF) control system for the LANSCE proton storage ring (PSR) is designed. The LLRF control system is implemented in a Field Programmable Gate Array (FPGA). The high resolution tunable 2.8MHz reference RF is generated by a direct digital synthesizer at the LANSCE front end and is transmitted to the PSR control system located half mile away. Since the digital LLRF control system is synthesized in the In-phase/Quadrature coordinate, the I/Q reference RF signals are generated by the FIR filter based Hilbert Transformer (HT). For the stabilization of the cavity field, a Proportional-Integral (PI) feedback controller is implemented. In addition, for the future application, a Proportional-Derivative (PD) type beam feedforward controller is provided. The performance of the designed LLRF control system was tested on the LANSCE PSR at full RF power without beam operation
| Abstract Category | Measurement and Control |
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