SAP2014 - List of Authors (Yan, F.)

Paper	Title	Page
WEPH20	Mismatch Study of C-ADS Main Linac	65
	C. Meng, S. Pei, J.Y. Tang, F. Yan IHEP, Beijing, People's Republic of China
	The C-ADS accelerator is a CW (Continuous-Wave) proton linac of 1.5 GeV in beam energy, 10 mA in beam current, and 15 MW in beam power. To meet the extremely low beam loss rate and high reliability, it is very important to study the beam halo caused by beam mismatch. To avoid the envelope instability, the phase advances per period are smaller than 90 degree in the design of main linac. In this paper, we reported the results of emittance growth and the envelope oscillations caused by mismatch in the main linac section. According to the simulation results, the transverse mismatch factor should be smaller than 0.4 and longitudinal mismatch factor smaller than 0.3 to meet the emittance growth requirement.

FRAMH4	Progress on the Beam Dynamics Studies for the ADS Injector I and the Main Linac	124
	S. Pei, P. Cheng, H. Geng, C. Meng, B. Sun, F. Yan, Z. Yang, Y.L. Zhao IHEP, Beijing, People's Republic of China
	Funding: Supported by the ADS project in China (XDA03020000). The ADS project in China is to build a proton Accelerator Driven sub-critical System around 2032. By using superconducting (SC) accelerating structures except the normal conducting (NC) RFQ, the driver accelerator runs in CW mode and accelerates the 10 mA proton beam from 35 keV at the ECR ion source exit to 1.5 GeV at the main linac exit to bombard the target to produce neutrons. To satisfy the restrict requirement on the stability, availability and reliability, two identical injectors will operate in parallel as hot spare for each other at the low energy stage, while local compensation method will be used to accomplish beam dynamics rematch at the high energy stage when certain device failure happens. Currently, there are two injector testing facility are being built at IHEP and IMP, respectively. The task of IHEP is to build a 10 MeV/325 MHz Injector I testing facility and accomplish the main linac design. Here, the progress on the beam dynamics studies for the ADS injector I and the main linac are presented. *peisl@ihep.ac.cn

Paper

Title

Page

Mismatch Study of C-ADS Main Linac

65

C. Meng, S. Pei, J.Y. Tang, F. Yan
IHEP, Beijing, People's Republic of China

The C-ADS accelerator is a CW (Continuous-Wave) proton linac of 1.5 GeV in beam energy, 10 mA in beam current, and 15 MW in beam power. To meet the extremely low beam loss rate and high reliability, it is very important to study the beam halo caused by beam mismatch. To avoid the envelope instability, the phase advances per period are smaller than 90 degree in the design of main linac. In this paper, we reported the results of emittance growth and the envelope oscillations caused by mismatch in the main linac section. According to the simulation results, the transverse mismatch factor should be smaller than 0.4 and longitudinal mismatch factor smaller than 0.3 to meet the emittance growth requirement.

FRAMH4

Progress on the Beam Dynamics Studies for the ADS Injector I and the Main Linac

124

S. Pei, P. Cheng, H. Geng, C. Meng, B. Sun, F. Yan, Z. Yang, Y.L. Zhao
IHEP, Beijing, People's Republic of China

Funding: Supported by the ADS project in China (XDA03020000).
The ADS project in China is to build a proton Accelerator Driven sub-critical System around 2032. By using superconducting (SC) accelerating structures except the normal conducting (NC) RFQ, the driver accelerator runs in CW mode and accelerates the 10 mA proton beam from 35 keV at the ECR ion source exit to 1.5 GeV at the main linac exit to bombard the target to produce neutrons. To satisfy the restrict requirement on the stability, availability and reliability, two identical injectors will operate in parallel as hot spare for each other at the low energy stage, while local compensation method will be used to accomplish beam dynamics rematch at the high energy stage when certain device failure happens. Currently, there are two injector testing facility are being built at IHEP and IMP, respectively. The task of IHEP is to build a 10 MeV/325 MHz Injector I testing facility and accomplish the main linac design. Here, the progress on the beam dynamics studies for the ADS injector I and the main linac are presented.
*peisl@ihep.ac.cn