The Side Coupled Drift Tube Linac (SCDTL) is a 3 GHz accelerating structure for proton therapy linac designed for TOP-IMPLART, an Intensity Modulated Proton Linear Ac- celerator for Radio-Therapy. The structure is made up of short DTL accelerating tanks for low current proton beams, coupled by side coupling cavities. The purpose of this pa- per is to report on the analysis of electromagnetic and the thermo-mechanical behavior for the SCDTL structure. The 3D electromagnetic analysis is used to derive the power dis- sipation on the structure; then one can infer the temperature distribution and deformation field in order to eventually eval- uate their feedback on the electromagnetic properties of the structure as, for instance, the cavity resonant frequency shift. Such a "multi-physics” analysis has been performed for dif- ferent supporting stem geometries in order to optimize the shunt impedance and the R/Q for SCDTL cavities.
Electromechanical analysis of SCDTL structures / Cardelli, Fabio; Ciambrella, M.; Ficcadenti, L.; Migliorati, Mauro; Mostacci, Andrea; Palumbo, Luigi; Pettinacci, V.; Picardi, L.; Ronsivalle, C.. - (2014), pp. 3250-3252. (Intervento presentato al convegno 5th International Particle Acceleration Conference tenutosi a Dresden (Ge) nel June 15-20 2014).
Electromechanical analysis of SCDTL structures
CARDELLI, FABIO;L. Ficcadenti;MIGLIORATI, Mauro;MOSTACCI, Andrea;PALUMBO, Luigi;
2014
Abstract
The Side Coupled Drift Tube Linac (SCDTL) is a 3 GHz accelerating structure for proton therapy linac designed for TOP-IMPLART, an Intensity Modulated Proton Linear Ac- celerator for Radio-Therapy. The structure is made up of short DTL accelerating tanks for low current proton beams, coupled by side coupling cavities. The purpose of this pa- per is to report on the analysis of electromagnetic and the thermo-mechanical behavior for the SCDTL structure. The 3D electromagnetic analysis is used to derive the power dis- sipation on the structure; then one can infer the temperature distribution and deformation field in order to eventually eval- uate their feedback on the electromagnetic properties of the structure as, for instance, the cavity resonant frequency shift. Such a "multi-physics” analysis has been performed for dif- ferent supporting stem geometries in order to optimize the shunt impedance and the R/Q for SCDTL cavities.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
