Speaker
Mr
Tomasz Czarski
(Warsaw University of Technology Institute of Electronic Systems)
Description
The LLRF – Low Level Radio Frequency cavity control system is still under
development in order to regulate accelerating fields of the superconductive
resonators. The first testing of the cavity driving applying the FPGA (Field
Programmable Gate Array) technology have been carried out in DESY Hamburg. The
experiments focused attention to the general recognition of the cavity features and
projected control methods. The electrical model of the resonator is taken as a
consideration origin. The calibration of the signal channel is considered as a key
preparation for an efficient cavity driving. The identification of the resonator
parameters is confirmed as a proper approach for the required performance: driving
on resonance during filling and field stabilization during flattop time with
reasonable power consumption. The feed-forward and feedback modes were applied
successfully for the CHECHIA cavity and ACC1 module driving. Representative results
of experiments are presented for different levels of the cavity field gradient.
Author
Mr
Tomasz Czarski
(Warsaw University of Technology Institute of Electronic Systems)
