SYSTEM AND METHOD FOR PROCESSING SIGNAL OF CAVITY-TYPE BEAM POSITION MONITOR WITH POSITION RESOLUTION OF NANOMETERS

摘要

A system and method for processing a cavity beam position monitor signal to obtain nanometer level beam position resolution is provided. In the beam position monitor signal processing method according to an embodiment, an analog RF (Radio Frequency) circuit is provided to measure the beam position resolution of the electron accelerator, and the RF signal output from the beam position monitor at the RF end of the RF circuit is provided. Processing to form two I signals (In phase signal) and Q signals (Out phase signal), and then extracting the DC component and adjusting the system gain; And the LO (Local Oscillator) stage of the RF circuit processes the LO signal output from the reference beam position monitor, selects the same frequency as the RF signal, forms a DC signal, and then sends the LO signal to the two I of the RF stage. And applying the signal to the Q signal.