Emittance coupling driven by space charge in the CSNS linac

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YIN Xue-Jun, FU Shi-Nian and PENG Jun. Emittance coupling driven by space charge in the CSNS linac[J]. Chinese Physics C, 2009, 33(9): 811-814. doi: 10.1088/1674-1137/33/9/020
YIN Xue-Jun, FU Shi-Nian and PENG Jun. Emittance coupling driven by space charge in the CSNS linac[J]. Chinese Physics C, 2009, 33(9): 811-814.  doi: 10.1088/1674-1137/33/9/020 shu
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Received: 2008-12-03
Revised: 2009-02-18
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Emittance coupling driven by space charge in the CSNS linac

    Corresponding author: YIN Xue-Jun,

Abstract: 

In the conventional design of RF linacs, the bunched beams are not in thermal equilibrium. The space charge forces couple the particle motions between the transverse and the longitudinal directions. Furthermore it will cause the equipartitioning process which leads to emittance growth and halo formation. In the design of the China Spallation Neutron Source (CSNS) linac, three cases are investigated using the Hofmann stability charts. In this paper, we present the equipartitioning beam study of the CSNS Alvarez DTL linac.

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