IPAC2016 - List of Authors (Liu, G.)

Paper	Title	Page
WEPOR003	Voltage Control for the 4-Th Harmonic Cavity in Hls Storage Ring	2664
	K. Xuan, C. Li, J.Y. Li, G. Liu, W. Xu USTC/NSRL, Hefei, Anhui, People's Republic of China
	In order to increase the beam lifetime, a 4th harmonic RF cavity was installed in the HLS-II storage ring. The electrical fields in the principle cavity and high harmonic cavity stretch the beam in the longitudinal direction, and increase the beam volume in phase space, leading to a longer Touschek lifetime. Stable electrical voltage in the high harmonic cavity is essential for steady beam stretching and better beam lifetime. To get a stable high voltage in the high harmonic cavity, we develop a method to maintain steady resonance condition in the cavity using a PID scheme. This paper presents the details of this method. The feedback result is also reported.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOR003
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOY005	Virtual Accelerator System for Online and Offline Simulations	4094
	S. Ma, C. Li, G. Liu, J.G. Wang, W. Xu, K. Xuan USTC/NSRL, Hefei, Anhui, People's Republic of China
	Synchrotron radiation light sources have been becoming import scientific tools in various research areas. To build a state-of-the-art synchrotron radiation light source, one need to carefully study the linear and nonlinear dynamics of the charged beam in each of the light source components, such as the linac, transfer line, booster synchrotron and storage ring. There are many mature software tools, including MAD, elegant and Accelerator toolkit (AT), can be used to accomplish these tasks. In order to achieve a high performance light source, up-to-date technologies are adopt to build various subsystems. The integration of these subsystems need to be fully tested before the light source is operated. However, there lacks of a good software to perform this work. The virtual light source (VLS), a software based upon EPICS and AT, is developed at the National Synchrotron Radiation Laboratory (NSRL) to fulfill this purpose. This paper presents the details of this software. Some critical applications are also illustrated.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY005
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Voltage Control for the 4-Th Harmonic Cavity in Hls Storage Ring

2664

K. Xuan, C. Li, J.Y. Li, G. Liu, W. Xu
USTC/NSRL, Hefei, Anhui, People's Republic of China

In order to increase the beam lifetime, a 4th harmonic RF cavity was installed in the HLS-II storage ring. The electrical fields in the principle cavity and high harmonic cavity stretch the beam in the longitudinal direction, and increase the beam volume in phase space, leading to a longer Touschek lifetime. Stable electrical voltage in the high harmonic cavity is essential for steady beam stretching and better beam lifetime. To get a stable high voltage in the high harmonic cavity, we develop a method to maintain steady resonance condition in the cavity using a PID scheme. This paper presents the details of this method. The feedback result is also reported.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOR003

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOY005

Virtual Accelerator System for Online and Offline Simulations

4094

S. Ma, C. Li, G. Liu, J.G. Wang, W. Xu, K. Xuan
USTC/NSRL, Hefei, Anhui, People's Republic of China

Synchrotron radiation light sources have been becoming import scientific tools in various research areas. To build a state-of-the-art synchrotron radiation light source, one need to carefully study the linear and nonlinear dynamics of the charged beam in each of the light source components, such as the linac, transfer line, booster synchrotron and storage ring. There are many mature software tools, including MAD, elegant and Accelerator toolkit (AT), can be used to accomplish these tasks. In order to achieve a high performance light source, up-to-date technologies are adopt to build various subsystems. The integration of these subsystems need to be fully tested before the light source is operated. However, there lacks of a good software to perform this work. The virtual light source (VLS), a software based upon EPICS and AT, is developed at the National Synchrotron Radiation Laboratory (NSRL) to fulfill this purpose. This paper presents the details of this software. Some critical applications are also illustrated.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY005

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)