Commissioning of the FRIB RFQ
Commissioning of the FRIB RFQ
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DOI：
10.1088/1742-6596/1067/5/052010
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发表时间：
2018-06
期刊：
影响因子：
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通讯作者：
H. Ren;E. Pozdeyev;D. Morris;S. Zhao;P. Morrison;R. Walker;N. Bultman;M. Konrad;X. Rao;J. Brandon;H. Maniar
中科院分区：
文献类型：
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作者：
H. Ren;E. Pozdeyev;D. Morris;S. Zhao;P. Morrison;R. Walker;N. Bultman;M. Konrad;X. Rao;J. Brandon;H. Maniar
稀有同位素束流装置（FRIB）中的射频四极杆腔是一个四叶片型腔，用于将电荷态Q/A在1/7 ~ 1/3之间的重离子束从12 keV/u加速到0.5 MeV/u。2016年11月，在FRIB隧道中组装。在低RF功率下进行珠拉测量和调谐。2017年8月，该加速器已被调整为59千瓦，足以加速关键性能参数（KPP）束流，氩气和氪气。2017年10月，KPP波束在CW波段成功投入使用。利用FRIB加速器在CW区将40 Ar ~（9+）和86 Kr_1 ~（17+）束流加速到0.5MeV/u的设计能量。随着多谐波聚束器的运行，FRIB聚束器调试已于2018年2月完成。光束通过反射镜的传输效率与PARMTEQ模拟结果吻合较好。本文将详细介绍FRIB束流调谐、高功率调节和束流调试的结果。
The radio-frequency quadrupole (RFQ) at the Facility for Rare Isotope Beams (FRIB) is a 4-vane type cavity designed to accelerate heavy ion beams with charge states Q/A between 1/7 and 1/3 from 12 keV/u to 0.5 MeV/u. The RFQ was assembled in the FRIB tunnel in November 2016. Bead-pull measurements and tuning were performed with low RF power. The RFQ has been conditioned to 59 kW in August 2017, which is sufficient to accelerate the Key Performance Parameter (KPP) beams, Argon and Krypton. The RFQ has been successfully commissioned with KPP beams in CW regime in October 2017. 40Ar9+ and 86Kr17+ beams were accelerated by the FRIB RFQ in the CW regime to the designed energy of 0.5 MeV/u. With the multi-harmonic buncher operational, the FRIB RFQ commissioning has been completed with bunched beam in February 2018. The beam transmission efficiency through the RFQ was in good agreement with PARMTEQ simulation results. The detailed results from the FRIB RFQ tuning, high power conditioning and beam commissioning will be presented in this paper.