Beam steering correction of the quarter wave resonator in the HISCL

LIU Shu-Hui; WANG Zhi-Jun; ZHANG Cong; HE Yuan

doi:10.1088/1674-1137/38/10/107007

Chinese Physics C> 2014, Vol. 38> Issue(10) : 107007 DOI: 10.1088/1674-1137/38/10/107007

Beam steering correction of the quarter wave resonator in the HISCL

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Abstract：
The Intensity Heavy Ion Superconducting Linear Accelerator as the injector of the High Intensity Heavy-Ion Accelerator Facility, which is a new project proposed in China has been designed. One of the design options in the low energy part is based on Quarter Wave Resonators (QWRs). However, because of the unsymmetrical geometry of the cavity, there are dipole fields near the beam hole, which may steer the beam vertically, thus leading to emittance growth and beam loss. The effect of the dipole mode field is analyzed, and a method to overcome the beam steering effect by placing QWRs with opposite orientation is proposed in this paper. The simulation results show that the beam steering effect is reduced effectively by this method, and the deviation of the beam centroid is decreased from 2.87 mm to 0.1 mm. The emittance growth is also smaller.

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LIU Shu-Hui, WANG Zhi-Jun, ZHANG Cong and HE Yuan. Beam steering correction of the quarter wave resonator in the HISCL[J]. Chinese Physics C, 2014, 38(10): 107007. doi: 10.1088/1674-1137/38/10/107007

LIU Shu-Hui, WANG Zhi-Jun, ZHANG Cong and HE Yuan. Beam steering correction of the quarter wave resonator in the HISCL[J]. Chinese Physics C, 2014, 38(10): 107007. doi: 10.1088/1674-1137/38/10/107007 shu

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Received: 2013-11-06
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Beam steering correction of the quarter wave resonator in the HISCL

Corresponding author: LIU Shu-Hui,

Corresponding author: WANG Zhi-Jun,

Corresponding author: HE Yuan,

Received Date: 2013-11-06

Accepted Date: 1900-01-01

Available Online: 2014-10-05

Abstract: The Intensity Heavy Ion Superconducting Linear Accelerator as the injector of the High Intensity Heavy-Ion Accelerator Facility, which is a new project proposed in China has been designed. One of the design options in the low energy part is based on Quarter Wave Resonators (QWRs). However, because of the unsymmetrical geometry of the cavity, there are dipole fields near the beam hole, which may steer the beam vertically, thus leading to emittance growth and beam loss. The effect of the dipole mode field is analyzed, and a method to overcome the beam steering effect by placing QWRs with opposite orientation is proposed in this paper. The simulation results show that the beam steering effect is reduced effectively by this method, and the deviation of the beam centroid is decreased from 2.87 mm to 0.1 mm. The emittance growth is also smaller.

Beam steering correction of the quarter wave resonator in the HISCL

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通讯作者: 陈斌, bchen63@163.com

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