2017•JACOWOpen access
High Power Conditioning and First Beam Acceleration of the CSNS DTL-1
Yun Wang, Qiang Chen, Mengxu Fan, Keyun Gong, Ahong Li, Bo Li, Hua Liu, Jun Peng, Peihua Qu, Xiao Guang Wu
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Abstract
The CSNS DTLs are divided into 4 cavities. The DTL-1 was transferred and installed in the CSNS Linac tunnel in August of 2015. The RF high power conditioning of DTL-1 started in December 2015 and ended in February 2016. At the end, we finished DTL-1 high power conditioning mission with peak power 1.5MW (1.1 times design value), 1.625% duty factor (650us, 25Hz). And the first beam has been successfully accelerated to the design value 21.6MeV with nearly 100% transmission efficiency. In this paper, the details of conditioning process were presented and one severe RF discharge breakdown was described specifically, which occurred during high power conditioning.