Author/Authors :
Czarski، نويسنده , , Tomasz and Koprek، نويسنده , , Waldemar and Po?niak، نويسنده , , Krzysztof T. and Romaniuk، نويسنده , , Ryszard S. and Simrock، نويسنده , , Stefan and Brandt، نويسنده , , Alexander and Chase، نويسنده , , Brian and Carcagno، نويسنده , , Ruben and Cancelo، نويسنده , , Gustavo and Koeth، نويسنده , , Timothy W.، نويسنده ,
Abstract :
A digital control of superconducting cavities for a linear accelerator is presented. FPGA-based controller, supported by Matlab system, was applied. Electrical model of a resonator was used for design of a control system. Calibration of the signal path is considered. Identification of cavity parameters has been carried out for adaptive control algorithm. Feed-forward and feedback modes were applied in operating the cavities. Required performance has been achieved; i.e. driving on resonance during filling and field stabilization during flattop time, while keeping reasonable level of the power consumption. Representative results of the experiments are presented for different levels of the cavity field gradient.
Keywords :
TESLA cavity control , CHECHIA driving , FPGA , System identification , LLRF control
