The gamma beam system of the European ELI-NP proposal foresees the use of a multi-bunch train colliding with a high intensity recirculated laser pulse. The linac energy booster is composed of 12 travelling wave C-Band structures, 1.8 m long with a field phase advance per cell of 2π/3 and a repetition rate of 100 Hz. Because of the multi-bunch operation, the structures have been designed with a damping of the HOM dipoles modes in order to avoid beam break-up (BBU). In the paper we discuss the design criteria of the structures also illustrating the effectiveness of the damping in the control of the BBU. Prototype activity is finally illustrated. Copyright © 2013 by JACoW- cc Creative Commons Attribution 3.0 (CC-BY-3.0).
The damped C-Band RF structures for the European ELI-NP proposal / Alesini, D.; Boni, R.; Di Raddo, R.; Lollo, V.; Vaccarezza, C.; Ficcadenti, L.; Pettinacci, V.; Migliorati, Mauro; Mostacci, Andrea; Palumbo, Luigi. - (2013), pp. 2726-2728. (Intervento presentato al convegno 4th International Particle Accelerator Conference, IPAC 2013 tenutosi a Shanghai nel 12 May 2013 through 17 May 2013).
The damped C-Band RF structures for the European ELI-NP proposal
L. Ficcadenti;MIGLIORATI, Mauro;MOSTACCI, Andrea;PALUMBO, Luigi
2013
Abstract
The gamma beam system of the European ELI-NP proposal foresees the use of a multi-bunch train colliding with a high intensity recirculated laser pulse. The linac energy booster is composed of 12 travelling wave C-Band structures, 1.8 m long with a field phase advance per cell of 2π/3 and a repetition rate of 100 Hz. Because of the multi-bunch operation, the structures have been designed with a damping of the HOM dipoles modes in order to avoid beam break-up (BBU). In the paper we discuss the design criteria of the structures also illustrating the effectiveness of the damping in the control of the BBU. Prototype activity is finally illustrated. Copyright © 2013 by JACoW- cc Creative Commons Attribution 3.0 (CC-BY-3.0).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
