RF measurements and control of higher order modes in accelerating cavities

Author

Veshcherevich, V. ; Krutikhin, S. ; Kuptsov, I. ; Nosyrev, S. ; Novikov, A. ; Sedlyarov, I.

Author_Institution

Budker Inst. of Nucl. Phys., Novosibirsk, Russia

Volume

3

fYear

1995

fDate

1-5 May 1995

Firstpage

1678

Abstract

In RF cavities, built at BINP for electron-positron storage rings, special tuners are provided for higher order modes (HOMs). The HOM tuners effect on different modes in different ways. Electrical characteristics and tuning curves of cavity modes are measured. Using these experimental data, the beam-cavity interaction at higher order modes is analyzed for different HOM tuner positions. There are combinations of HOM tuner positions, at which the cavity caused beam instabilities may occur, and there are combinations, at which they may not. The last ones are recommended for routine cavity operation

Keywords

accelerator cavities; colliding beam accelerators; electron accelerators; particle beam diagnostics; particle beam stability; storage rings; RF measurements; accelerating cavities; beam instabilities; beam-cavity interaction; electron-positron storage rings; higher order modes; Acceleration; Damping; Electric variables; Electric variables measurement; Impedance; Nuclear physics; Particle beams; Radio frequency; Storage rings; Tuners;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505325

Filename

505325