Lessons Learnt and Mitigation Measures for the CERN LHC Equipment with RF fingers

Beam-induced RF heating has been observed in several LHC components when the bunch/beam intensity was increased and/or the bunch length reduced. In particular eight bellows, out of the ten double-bellow modules present in the machine in 2011, were found with the spring, which should keep the RF fing...

Descripción completa

Detalles Bibliográficos
Autores principales: Métral, E, Aberle, O, Assmann, R W, Baglin, V, Barnes, M J, Berrig, O E, Bertarelli, A, Bregliozzi, G, Calatroni, S, Carra, F, Caspers, F, Day, H A, Ferro-Luzzi, M, Gallilee, M A, Garion, C, Garlasche, M, Grudiev, A, Jimenez, J M, Jones, R, Kononenko, O, Losito, R, Nougaret, J L, Parma, V, Redaelli, S, Salvant, B, Strubin, P, Veness, R, Vollinger, C, Weterings, W
Lenguaje:eng
Publicado: 2013
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1588128
Descripción
Sumario:Beam-induced RF heating has been observed in several LHC components when the bunch/beam intensity was increased and/or the bunch length reduced. In particular eight bellows, out of the ten double-bellow modules present in the machine in 2011, were found with the spring, which should keep the RF fingers in good electrical contact with the central insert, broken. Following these observations, the designs of all the components of the LHC equipped with RF fingers have been reviewed. The lessons learnt and mitigation measures are presented in this paper.

Ejemplares similares