scholarly journals Transverse Optics Measurement and Correction

Author(s):  
Michiko G. Minty ◽  
Frank Zimmermann

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.

2014 ◽  
Vol 26 (10) ◽  
pp. 105101
Author(s):  
邓庆勇 Deng Qingyong ◽  
曹建社 Cao Jianshe ◽  
岳军会 Yue Junhui ◽  
魏源源 Wei Yuanyuan ◽  
麻惠洲 Ma Huizhou ◽  
...  

2009 ◽  
Vol 24 (05) ◽  
pp. 1057-1067
Author(s):  
HE ZHANG ◽  
MARTIN BERZ

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.


Author(s):  
Ying Wu ◽  
Vladimir N. Litvinenko ◽  
Etienne Forest ◽  
John M.J. Madey

1991 ◽  
Author(s):  
J.A. Jendrzejczyk ◽  
M.W. Wambsganss ◽  
R.K. Smith

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