|WEPP022||A Method of Correcting the Beam Transverse Offset for the Cavity Bunch Length Monitor||565|
Funding: Supported by National Key R&D Program of China (Grant No. 2016YFA0401900 and No. 2016YFA0401903) and The National Natural Science Foundation of China (Grant No. U1832169 and No. 11575181)
Cavity bunch length monitor uses monopole modes excited by bunches within the cavities to measure the bunch longitudinal root mean square (rms) length. It can provide a very high accuracy and high resolution. However, when the bunch passes through the cavities with transverse offset (that is, the bunch moves off the cavity axis), the amplitude of the monopole modes will change and cannot reflect the bunch length precisely. In this paper, a method of correcting the beam transverse offset is proposed. Simulation results show that the method can reduce the error of the bunch length measurement significantly.
|DOI •||reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP022|
|About •||paper received ※ 03 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019|
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