Multipactor Simulations for MYRRHA Spoke Cavity: Comparison Between SPARK3D, MUSICC3D, CST PIC and Measurement

Ningyuan Hu (1) , David Longuevergne (1) , Guillaume Olry (1) , Marin Chabot (1) , Jean-Louis Coacolo (1) , Mohamed E Belhaj (2)

1 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2 DPHY, ONERA, Université de Toulouse [Toulouse]

The multipactor effect can lead to thermal breakdown (quench), high field emission and limited accelerating gradient in superconducting accelerator devices. To determine the multipactor breakdown power level, multipactor simulations can be performed. The objective of this study is to compare the results given by different simulation codes with the results of vertical testing of SRF cavities. In this paper, Spark3D [1], MUSICC3D [2] and CST Studio PIC solver [3] have been used to simulate the multipactor effect in the single Spoke resonator developed within the framework of MYRRHA project [4]. Then, a benchmark of these three simulation codes has been made. The breakdown power level, the multipactor order and the most prominent location of multipactor are presented. Finally, the simulation results are compared with the measurements done during the vertical tests.

Mots clés: Multipactor; Secondary emission; Accelerator

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]

Ningyuan Hu, David Longuevergne, Guillaume Olry, Marin Chabot, Jean-Louis Coacolo, et al.. Multipactor Simulations for MYRRHA Spoke Cavity: Comparison Between SPARK3D, MUSICC3D, CST PIC and Measurement. 2th International Particle Accelerator Conference (IPAC 2021), Aug 2021, Virtual edition, Brazil. pp.WEPAB381 3606-3609, ⟨10.18429/JACoW-IPAC2021-WEPAB381⟩. ⟨hal-03346496⟩