Measurement of amplitude detuning at flat-top and beta star = 0.6 m using AC dipoles

This paper reports on the first direct measurement of amplitude detuning using AC dipoles. The only means in the LHC at high energy to excite large betatron oscillations is using AC dipoles. In the linear regime a perfect AC dipole does not excite the natural tune of the machine. This seriously chal...

Descripción completa

Detalles Bibliográficos
Autores principales: Bach, T, Giovannozzi, M, Langner, A, Levinsen, Z I, Miyamoto, R, Maclean, E H, McAteer, M J, Redaelli, R, Skowronski, P K, Tomas, R, Persson, T H B, White, S
Lenguaje:eng
Publicado: 2013
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1528610
Descripción
Sumario:This paper reports on the first direct measurement of amplitude detuning using AC dipoles. The only means in the LHC at high energy to excite large betatron oscillations is using AC dipoles. In the linear regime a perfect AC dipole does not excite the natural tune of the machine. This seriously challenges the measurement of the amplitude detuning by having to rely on imperfections in order to observe the natural tune. The measurements were carried out at $\beta$*=0.6 m and at flat-top during two MD sessions in 12-10-2012 and 27-11-2012, respectively.

Ejemplares similares