Multipacting Simulation Study for 56 MHz Quarter Wave Resonator using 2D Code

Naik,D. ; Ben-Zvi, I.

关键词: BROOKHAVEN RHIC;    BEAM LUMINOSITY;    BEAM BUNCHING;    CAVITY RESONATORS;    COMPUTERIZED SIMULATION;    M CODES;   

DOI  :  10.2172/946779
RP-ID  :  BNL--81971-2009-IR
PID  :  OSTI ID: 946779
Others  :  R&D Project: 18054
Others  :  Other: KB0202011
Others  :  TRN: US0901311

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

A beam excited 56 MHz Radio Frequency (RF) Niobium Quarter Wave Resonator (QWR) has been proposed to enhance RHIC beam luminosity and bunching. Being a RF cavity, multipacting is expected; therefore an extensive study was carried out with the Multipac 2.1 2D simulation code. The study revealed that multipacting occurs in various bands up to peak surface electric field 50 kV/m and is concentrated mostly above the beam gap and on the outer conductor. To suppress multipacting, a ripple structure was introduced to the outer conductor and the phenomenon was successfully eliminated from the cavity.