SAP2014 - List of Authors (Xu, H.S.)

Paper	Title	Page
WEPH27	Lattice Design of Low Beta Function at Interaction Point for TTX Compact Ring	78
	T. Rui, W.-H. Huang, H.S. Xu TUB, Beijing, People's Republic of China
	A storage ring is being designed at Accelerator Laboratory in Tsinghua University to increase the average photon flux generated by Tsinghua Thomson scattering x-ray source (TTX). To achieve a small beta function at the interaction point(IP), four pairs of quadrupole magnets are added to the baseline design. Global scan of all stable settings and genetic algorithm(GA) techniques are utilized to optimize the design. The lattice design is presented in this work.

THAMH3	Nonlinear Effects in the TTX-LESR	99
	H.S. Xu, W.-H. Huang, C.-X. Tang TUB, Beijing, People's Republic of China
	We are designing a Laser Electron Storage Ring (LESR) for Tsinghua Thomson scattering X-ray source (TTX). A very compact LESR is designed to increase the average flux of the generated X-ray photons through the way of increasing the repetition frequency of scattering. Considering to reduce the lengths and the number of the magnets is necessary in designing a small ring. However, we find that the nonlinear effects of dipole field become significant when the bending radii of the dipole magnets are small. In this paper, we first present the baseline design of the LESR for TTX. Both analytical analysis and simulation are carried out to study the particles' behavior around the third-order systematic resonance line 3νx = 4. The analytical results of the resonance strengths are found to agree well with results from numerical particle tracking.

Paper

Title

Page

Lattice Design of Low Beta Function at Interaction Point for TTX Compact Ring

78

T. Rui, W.-H. Huang, H.S. Xu
TUB, Beijing, People's Republic of China

A storage ring is being designed at Accelerator Laboratory in Tsinghua University to increase the average photon flux generated by Tsinghua Thomson scattering x-ray source (TTX). To achieve a small beta function at the interaction point(IP), four pairs of quadrupole magnets are added to the baseline design. Global scan of all stable settings and genetic algorithm(GA) techniques are utilized to optimize the design. The lattice design is presented in this work.

THAMH3

Nonlinear Effects in the TTX-LESR

99

H.S. Xu, W.-H. Huang, C.-X. Tang
TUB, Beijing, People's Republic of China

We are designing a Laser Electron Storage Ring (LESR) for Tsinghua Thomson scattering X-ray source (TTX). A very compact LESR is designed to increase the average flux of the generated X-ray photons through the way of increasing the repetition frequency of scattering. Considering to reduce the lengths and the number of the magnets is necessary in designing a small ring. However, we find that the nonlinear effects of dipole field become significant when the bending radii of the dipole magnets are small. In this paper, we first present the baseline design of the LESR for TTX. Both analytical analysis and simulation are carried out to study the particles' behavior around the third-order systematic resonance line 3νx = 4. The analytical results of the resonance strengths are found to agree well with results from numerical particle tracking.