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, M., Mostacci, A., Palumbo, L.. - (2013), pp. 2726-2728. (4th International Particle Accelerator Conference, IPAC 2013 Shanghai 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.
