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2021•JACOWOpen access

Solution to Beam Transmission Decline in the CSNS Linac Operation Using Measurements and Simulations

Jun Peng, Yuwen An, Shinian Fu, Liangsheng Huang, Ming-Yang Huang, Mingtao Li, Yong Li, Zhiping Li, Xiaohan Lu, Xibao Luo, Sheng Wang, Shou Xu, Yue Yuan

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Abstract

The CSNS linac operation at its design average power currently. However, the beam transmission is declining and the beam loss is increasing during the operation. With simulations and experiments, we found there is a long longitudinal tail exist in the beam bunch output from the RFQ. And this tail caused the beam loss in the following linac. After inhibition of the longitudinal tail in the beam bunch, the beam transmission in operation can keep stable.

About this research paper

What this paper is about

The CSNS linac operation at its design average power currently. However, the beam transmission is declining and the beam loss is increasing during the operation. With simulations and experiments, we found there is a long longitudinal tail exist in the beam bunch output from the RFQ. And this tail caused the beam loss in the following linac. After inhibition of the longitudinal tail in the beam bunch, the beam transmission in operation can keep stable.

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Available abstract

The CSNS linac operation at its design average power currently. However, the beam transmission is declining and the beam loss is increasing during the operation. With simulations and experiments, we found there is a long longitudinal tail exist in the beam bunch output from the RFQ. And this tail caused the beam loss in the following linac. After inhibition of the longitudinal tail in the beam bunch, the beam transmission in operation can keep stable.

Key concepts: Linear particle accelerator, Beam (structure), Transmission (telecommunications), Computer science, Optics, Physics, Telecommunications

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