CERN Accelerating science

Article
Title	A Method to Calibrate Beam Position Monitor at HLS 200 MeV LINAC
Author(s)	Li, Ji-Hao ; Cao, Yong ; He, Duo-hui ; Jin, Kai ; Lu, Ping ; Sun Bao Gen ; Wang, Jianping ; Wang, Yong ; Zheng, P
Affiliation	(USTC/NSRL, Hefei, Anhui)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2896
Subject category	Accelerators and Storage Rings
Abstract	In order to improve injection efficiency of HLS 200Mev LINAC, we redesign a new strip line beam position monitor system, which is consisted of a strip line structure and a signal processing system. We decide on an online calibration method based on beam to find out the geometry centre displacement and relative gain offset. Before the BPM testing bench has been prepared, we make a simulation based on the model accounted for all factors influencing signal amplitudes and get the calibrating results. At last, we analyze the nonlinearity effect on the calibration results.