Abstract
The mechanism of steady-state microbunching (SSMB) has been proposed [D. F. Ratner and A. W. Chao, Phys. Rev. Lett. 105, 154801 (2010)] to generate high-power coherent radiation at a high repetition rate or in continuous-wave mode using electron storage rings. In this paper, the related single-particle dynamics are theoretically and numerically studied, and important results are presented. The investigated effects are longitudinal quantum radiation excitation, nonlinear momentum compaction, and linear and nonlinear coupling of the transverse and longitudinal motion. Although this analysis is oriented toward SSMB, some of the analyzed effects are also crucial in cases such as coherent harmonic generation, bunch slicing, bunch compression, free-electron laser beam transport lines, and quasi-isochronous rings, which involve precise longitudinal phase-space manipulations.
Highlights
INTRODUCTIONMicrobunching has been one of the research focuses in accelerator physics and is expected to remain so in the years to come, as evidenced by the advent of free-electron lasers (FELs) and subsequent related developments [1,2,3]
The investigated effects are longitudinal quantum radiation excitation, nonlinear momentum compaction, and linear and nonlinear coupling of the transverse and longitudinal motion. This analysis is oriented toward steady-state microbunching (SSMB), some of the analyzed effects are crucial in cases such as coherent harmonic generation, bunch slicing, bunch compression, free-electron laser beam transport lines, and quasi-isochronous rings, which involve precise longitudinal phase-space manipulations
Microbunching has been one of the research focuses in accelerator physics and is expected to remain so in the years to come, as evidenced by the advent of free-electron lasers (FELs) and subsequent related developments [1,2,3]
Summary
Microbunching has been one of the research focuses in accelerator physics and is expected to remain so in the years to come, as evidenced by the advent of free-electron lasers (FELs) and subsequent related developments [1,2,3]. While the great power of microbunching originates from the collective radiation effect, it seems that a systematic investigation of the related single-particle dynamics of the formation, transportation and maintenance of microstructures in linacs and storage rings is necessary and will be of considerable value to allow greater benefits to be obtained from microbunching This is the motivation for the research work presented in this paper. Some of them have been studied or alluded to by other authors before in different contexts, here, we reinvestigate the relevance of these effects with an emphasis on microbunching dynamics, and some new and important results are presented This analysis is oriented toward SSMB, some of the analyzed effects are crucial in cases such as CHG, bunch slicing, bunch compression, and FEL beam transport lines, which require precise longitudinal phase-space manipulations.
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