Simulation experiment on low-level RF control for dual-harmonic acceleration at CSNS RCS

Shen Sirong; Li Xiao; Zhang Chunlin; Sun Hong; Tang Jingyu

doi:10.3788/HPLPB20132511.2986

Volume 25 Issue 11

Dec. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(11): 2986-2990

Xu Degang, Jiang Hao, Zhang Hao, et al. Miniature tunable extracavity terahertz parametric oscillator[J]. High Power Laser and Particle Beams, 2013, 25: 1465-1468. doi: 10.3788/HPLPB20132506.1465

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Shen Sirong, Li Xiao, Zhang Chunlin, et al. Simulation experiment on low-level RF control for dual-harmonic acceleration at CSNS RCS[J]. High Power Laser and Particle Beams, 2013, 25: 2986-2990. doi: 10.3788/HPLPB20132511.2986

Xu Degang, Jiang Hao, Zhang Hao, et al. Miniature tunable extracavity terahertz parametric oscillator[J]. High Power Laser and Particle Beams, 2013, 25: 1465-1468. doi: 10.3788/HPLPB20132506.1465

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Simulation experiment on low-level RF control for dual-harmonic acceleration at CSNS RCS

doi: 10.3788/HPLPB20132511.2986

1.
Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2013-04-25
Rev Recd Date: 2013-07-03
Publish Date: 2013-10-28

Abstract

Abstract

The design and test of the low-level RF (LLRF) control system for the dual-harmonic acceleration at the rapid cycling synchrotron (RCS) of China Spallation Neutron Source (CSNS) at phase Ⅰ is introduced. In order to implement the mode switch from the second harmonic to the fundamental during the acceleration cycle for one of the eight RF cavities, the LLRF system for the cavity has been designed differently from the others. Several technical measures such as the opening of the control loops during the mode switch and the reclosing of two tuning circuits of the RF amplifier at different moments, have been taken. The experimental results on the testing platform based on an RF prototype show good dynamic performance of the LLRF system and prove the feasibility of dual-harmonic operation.
- China Spallation Neutron Source,
- rapid cycling synchrotron,
- dual-harmonic acceleration,
- RF system,
- low-level control

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