Experimental study of collective effects in BEP storage ring with high stored current

2002 ◽  
Author(s):  
V. Danilov ◽  
I. Koop ◽  
A. Lysenko ◽  
B. Militsyn ◽  
I. Nesterenko ◽  
...  
Keyword(s):  
Experimental Study ◽  
Storage Ring ◽  
Collective Effects

Collective effects in HLS-II storage ring

2015 ◽  
pp. 1785-1788
Author(s):  
Qingkun Zhang ◽  
Lin Wang ◽  
Weimin Li
Keyword(s):  
Storage Ring ◽  
Collective Effects

scholarly journals Collective effects in the NSLS-II storage ring

2007 ◽  
Author(s):  
S. Krinsky ◽  
J. Bengtsson ◽  
J.S. Berg ◽  
M. Blaskiewicz ◽  
A. Blednykh ◽  
...  
Keyword(s):  
Storage Ring ◽  
Collective Effects

scholarly journals Single bunch collective effects in PLS storage ring

2002 ◽  
Author(s):  
C. Kim ◽  
Yujong Kim ◽  
K.H. Kim ◽  
J.Y. Huang ◽  
M.H. Cho ◽  
...  
Keyword(s):  
Storage Ring ◽  
Collective Effects

scholarly journals Collective effects in a diffraction-limited storage ring

2014 ◽  
Vol 21 (5) ◽  
pp. 937-960 ◽  
Author(s):  
Ryutaro Nagaoka ◽  
Karl L. F. Bane
Keyword(s):  
Storage Ring ◽  
Transverse Mode ◽  
Collective Effects ◽  
Coupling Impedance ◽  
Machine Performance ◽  
Coherent Synchrotron Radiation ◽  
Resistive Wall ◽  
Mode Coupling Instability ◽  
Beam Instabilities ◽  
Low Emittance

This paper gives an overview of collective effects that are likely to appear and possibly limit the performance in a diffraction-limited storage ring (DLSR) that stores a high-intensity ultra-low-emittance beam. Beam instabilities and other intensity-dependent effects that may significantly impact the machine performance are covered. The latter include beam-induced machine heating, Touschek scattering, intra-beam scattering, as well as incoherent tune shifts. The general trend that the efforts to achieve ultra-low emittance result in increasing the machine coupling impedance and the beam sensitivity to instability is reviewed. The nature of coupling impedance in a DLSR is described, followed by a series of potentially dangerous beam instabilities driven by the former, such as resistive-wall, TMCI (transverse mode coupling instability), head–tail and microwave instabilities. In addition, beam-ion and CSR (coherent synchrotron radiation) instabilities are also treated. Means to fight against collective effects such as lengthening of the bunch with passive harmonic cavities and bunch-by-bunch transverse feedback are introduced. Numerical codes developed and used to evaluate the machine coupling impedance, as well as to simulate beam instability using the former as inputs are described.

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