Abstract: A beam automatic detection wire scanner system was developed to improve the measurement resolution and shorten the data processing time. The system managed the sampling process by multi-process priority mechanism, using Allen function to amplify signal variation characterization after signal processing. Fitting range was recognized based on short time average/long time average and Akaike information criterion, and fitting parameter initial values were determined by energy gradient curve. It is found that the system detects beam accurately and improves the measurement resolution and shortens data processing time.

Key words: synchrotron radiation, wire scanner, signal processing, resolution