CERN Accelerating science

Article
Title	The Measurement of Tune and Phase Space at HLS
Author(s)	Yang Yong Li ; Hong Liu, Jian ; Hua Wang, Jun ; Liu, Zu-ping ; Sun Bao Gen ; Zheng, Kai
Affiliation	(USTC/NSRL, Hefei, Anhui)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3114
Subject category	Accelerators and Storage Rings
Abstract	Tune and phase space online monitor at the electronic storage ring of Hefei Light Source (HLS) have been realized by using of turn-by-turn beam position data. In this paper, we have compared many methods to compute tune and discussed how to choose the best fitting method for our online tune computing. We can compute and display tune online, at the same time, beam tracks were obtained on the transverse phase space by using turn-by-turn beam position data at two differently-located beam-position-monitor electrodes. With these instruments we can precise and attractive study machine instabilities