Stable bunch trains for plasma wakefield acceleration

Lotov, K. V.

doi:10.1088/1361-6587/aa9f97

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…As the plasma frequency may not couple with the bunch repetition, some micro-bunch will not reside in the focusing phase of the plasma wave. [19] The transport of bunch trains in plasmas still needs to be investigated in details.…”

Section: Introductionmentioning

confidence: 99%

The wakefield and energy loss study of micro‐bunch trains passing through plasmas

Sun

Zhao

et al. 2021

Contributions to Plasma Physics

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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.

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Section: Introductionmentioning

confidence: 99%

The wakefield and energy loss study of micro‐bunch trains passing through plasmas

Sun

Zhao

et al. 2021

Contributions to Plasma Physics

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“…There is a competing effect that could also lead to similar behavior of the wave phase. The period of forced oscillations in a growing wave is longer than the period of free oscillations, because each micro-bunch not only increases the wave amplitude, but also shifts the phase backward [11,21]. The wave period at the leading half of the beam is longer precisely because of this effect (figure 5(b)).…”

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confidence: 99%

Plasma wakefield acceleration beyond the dephasing limit with 400 GeV proton driver

Lotov¹,

Tuev²

2021

Plasma Phys. Control. Fusion

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A new regime of proton-driven plasma wakefield acceleration is discovered, in which the plasma nonlinearity increases the phase velocity of the excited wave compared to that of the protons. If the beam charge is much larger than minimally necessary to excite a nonlinear wave, there is sufficient freedom in choosing the longitudinal plasma density profile to make the wave speed close to the speed of light. This allows electrons or positrons to be accelerated to about 200 GeV with a 400 GeV proton driver.

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“…There is a competing effect that could also lead to similar behaviour of the wave phase. The period of forced oscillations in a growing wave is longer than the period of free oscillations, because each micro-bunch not only increases the wave amplitude, but also shifts the phase backward [11,21]. The wave period at the leading half of the beam is longer precisely because of this effect [Fig.…”

mentioning

confidence: 99%