Vertical emittance reduction and preservation in electron storage rings via resonance driving terms correction

被引：30

作者：

Franchi, A. ^{[1
]}

Farvacque, L. ^{[1
]}

Chavanne, J. ^{[1
]}

Ewald, F. ^{[1
]}

Nash, B. ^{[1
]}

Scheidt, K. ^{[1
]}

Tomas, R. ^{[2
]}

机构：

[1] ESRF, Grenoble, France

[2] CERN, Geneva, Switzerland

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2011年 / 14卷 / 03期

关键词：

D O I：

10.1103/PhysRevSTAB.14.034002

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

In this paper the influence of betatron coupling on the transverse beam emittances is described using the resonance driving terms formalism. Betatron coupling and vertical dispersion generated by magnetic and installation errors are major sources of vertical emittance. A new scheme for minimizing the latter is presented here, together with results from measurements carried out in 2010 at the ESRF electron storage ring, which provided vertical emittance of about 4.4 pm, a record low for this machine. Two schemes for the automatic compensation of coupling introduced by insertion devices are also presented with results from the first implementation tests. This paper is also an attempt to clarify the various definitions and meanings of vertical emittance in the presence of coupling.

引用

页数：19

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