Dynamic aperture study for the Duke FEL storage ring

1993 ◽  
Vol 331 (1-3) ◽  
pp. 287-292 ◽  
Author(s):  
Ying Wu ◽  
Vladimir N. Litvinenko ◽  
Etienne Forest ◽  
John M.J. Madey
Keyword(s):  
Storage Ring ◽  
Dynamic Aperture

scholarly journals Transverse Optics Measurement and Correction

2003 ◽  
pp. 17-67
Author(s):  
Michiko G. Minty ◽  
Frank Zimmermann
Keyword(s):  
Storage Ring ◽  
Beam Quality ◽  
Beam Loss ◽  
Quadrupole Magnet ◽  
Accurate Knowledge ◽  
Dynamic Aperture ◽  
Beam Envelope

AbstractIn order to preserve the beam quality, accurate knowledge of the transverse optics and its correction is most often mandatory. For example, if the distribution of a beam injected into a storage ring is not matched to the ring optics, the emittance will grow due to filamentation. Or, if there is a significant optics error, e.g., induced by a strength error in a quadrupole magnet, the beam envelope may vary strongly. The resulting reduction in dynamic aperture may then lead to enhanced beam loss.

EFFECTS OF THE WIGGLER ON THE HEFEI LIGHT SOURCE STORAGE RING

2009 ◽  
Vol 24 (05) ◽  
pp. 1057-1067
Author(s):  
HE ZHANG ◽  
MARTIN BERZ
Keyword(s):  
Magnetic Field ◽  
Light Source ◽  
Storage Ring ◽  
Field Model ◽  
Beta Function ◽  
Nonlinear Effects ◽  
Magnetic Field Model ◽  
Dynamic Aperture ◽  
Linear Effects ◽  
The Magnetic Field

The Hefei light source (HLS) is a second generation synchrotron radiation light source, in which a superconducting wiggler is installed and operating. The effects of the wiggler on the beam dynamics on the HLS storage ring are studied, in order to make sure the wiggler can operate properly when the ring is working in the high brilliance mode. We generate a model of the magnetic field in the midplane of the wiggler. The 3D magnetic field model is also builded up by COSY infinity 9.0. Both the linear and nonlinear effects of the wiggler are discussed. The vertical tune is changed from 2.535 to 2.567 and the vertical beta function is heavily distorted, while a symplectic tracking study shows the dynamic aperture is only slightly affected by the wiggler. And the wiggler should be able to run on the high brilliance mode after the linear effects get compensated.

scholarly journals Multi-objective dynamic aperture optimization for storage rings

2016 ◽  
Vol 31 (33) ◽  
pp. 1644019 ◽  
Author(s):  
Yongjun Li ◽  
Lingyun Yang
Keyword(s):  
Genetic Algorithm ◽  
Storage Ring ◽  
Storage Rings ◽  
Optimization Approach ◽  
Multi Objective ◽  
Multi Objective Genetic Algorithm ◽  
Dynamic Aperture ◽  
Low Order

We report an efficient dynamic aperture (DA) optimization approach using multi-objective genetic algorithm (MOGA), which is driven by nonlinear driving terms computation. It was found that having small low order driving terms is a necessary but insufficient condition of having a decent DA. Then direct DA tracking simulation is implemented among the last generation candidates to select the best solutions. The approach was demonstrated successfully in optimizing NSLS-II storage ring DA.

Dynamic aperture of the storage ring VEPP-2M in round beam mode

2002 ◽  
Author(s):  
I.A. Koop ◽  
A.P. Lysenko ◽  
I.N. Nesterenko ◽  
Yu.M. Shatunov ◽  
A.A. Valishev
Keyword(s):  
Storage Ring ◽  
Dynamic Aperture ◽  
Beam Mode

scholarly journals Investigation of the damping wiggler effect and application on the PAL fourth-generation storage ring

2020 ◽  
Vol 27 (6) ◽  
pp. 1510-1517
Author(s):  
Gyeongsu Jang ◽  
M. Yoon ◽  
J. Lee ◽  
B.-H. Oh ◽  
J. Kim ◽  
...  
Keyword(s):  
Storage Ring ◽  
Fourth Generation ◽  
Light Sources ◽  
Dynamic Aperture ◽  
Pohang Accelerator Laboratory ◽  
Pal Xfel

An investigation of the damping wiggler effect to reduce the emittance in the Pohang Accelerator Laboratory (PAL), a fourth-generation storage ring (4GSR) that uses a multi-bend achromat, is presented. A 4GSR lattice which has reduced emittance and increased dynamic aperture to amplify the synergy with two existing light sources (PLS-II and PAL-XFEL) at PAL is described.

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