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The wakefield and energy loss study of micro‐bunch trains passing through plasmas
Author(s) -
Sun KunXiang,
Zhao XiaoYing,
Xu ChengYe,
Xie ZaiPeng,
Qi Xin,
Wang ZhiJun,
He Yuan,
Zhao YongTao
Publication year - 2021
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.202000187
Subject(s) - bunches , physics , plasma , wavelength , atomic physics , plasma acceleration , energy (signal processing) , excited state , nuclear physics , computational physics , optics , electron , quantum mechanics
Particle‐in‐cell simulations are performed to study the wakefield and the energy loss of a train of micro‐bunches passing through background plasmas. The wakefield and the energy loss are found to be directly connected to the interval of each micro‐bunch. If the interval is once the length of the wakefield wavelength, the wakefield excited by each micro‐bunch will be superimposed. The energy loss of the micro‐bunch increases along the bunch train. On the other hand, if the interval is 1.5 times the length of the wakefield wavelength, the wakefield almost disappears. Micro‐bunches on the odd position of the train will transfer their energies to the plasma, and then, these energies are absorbed by the subsequent even micro‐bunches. Thus, the total energy loss of the train is greatly reduced.