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Round beams generated by vertical dispersion

 

作者: P. Bagley,  

 

期刊: AIP Conference Proceedings  (AIP Available online 1990)
卷期: Volume 214, issue 1  

页码: 298-308

 

ISSN:0094-243X

 

年代: 1990

 

DOI:10.1063/1.39780

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Simulations suggest that ine+e−storage rings collisions of round beams (equal emittances and equal &bgr;*) can produce very large tune shifts and luminosities. We understand how to make equal &bgr;*s, but generating equal emittances is more difficult. We describe an equal emittance scheme that uses several skew quads to couple horizontal dispersion into vertical dispersion. These skew quads also produce a coupling bump. At the interaction point and at other points outside the coupling bump, the motion is not coupled, so that the ‘A’ normal mode corresponds to horizontal motion and the ‘B’ normal mode corresponds to vertical motion. We present a round beam lattice for CESR that incorporates this scheme.

 

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