Simulations of a meter-long plasma wakefield accelerator

Lee, S.; Katsouleas, T.; Hemker, R. G.; Mori, W. B.

doi:10.1103/physreve.61.7014

Cited by 60 publications

(74 citation statements)

References 9 publications

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“…These results show, clearly, the capability of PBA, and in particular, the capability of the blowout regime of PBA, to accelerate high-quality electron beams to high energies [23,24] in controlled acceleration scenarios. However, for a future plasma-based linear collider, or for a plasma afterburner [7,[25][26][27][28], it is important not only to achieve high final output energies, but also to achieve low and controlled depolarization rates.…”

Section: Introductionmentioning

confidence: 99%

Polarized beam conditioning in plasma based acceleration

Vieira¹,

Huang

Mori

et al. 2011

Phys. Rev. ST Accel. Beams

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The acceleration of polarized electron beams in the blowout regime of plasma-based acceleration is explored. An analytical model for the spin precession of single beam electrons, and depolarization rates of zero emittance electron beams, is derived. The role of finite emittance is examined numerically by solving the equations for the spin precession with a spin tracking algorithm. The analytical model is in very good agreement with the results from 3D particle-in-cell simulations in the limits of validity of our theory. Our work shows that the beam depolarization is lower for high-energy accelerator stages, and that under the appropriate conditions, the depolarization associated with the acceleration of 100-500 GeV electrons can be kept below 0.1%-0.2%.

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Section: Introductionmentioning

confidence: 99%

Polarized beam conditioning in plasma based acceleration

Vieira¹,

Huang

Mori

et al. 2011

Phys. Rev. ST Accel. Beams

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“…Although this relationship can be analytically derived only in the case of linear plasma behavior, simulations show that the scaling holds even in the non-linear regime [1,2]. Thus it is important in plasma wakefield experiments to accurately measure the bunch length.…”

Section: Introductionmentioning

confidence: 99%

Electron Bunch Length Measurements in the E-167 Plasma Wakefield Experiment

Blumenfeld¹,

Auerbach²,

Berry³

et al. 2006

AIP Conference Proceedings

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Abstract. Bunch length is of prime importance to beam driven plasma wakefield acceleration experiments due to its inverse relationship to the amplitude of the accelerating wake. We present here a summary of work done by the E167 collaboration measuring the SLAC ultra-short bunches via autocorrelation of coherent transition radiation. We have studied material transmission properties and improved our autocorrelation traces using materials with better spectral characteristics.

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“…On the other hand, until recently the plasma dynamics of the PWFA blowout regime, with their extreme nonlinearity, have been only qualitatively understood, mainly through both fluid and particle-in-cell (PIC) simulations [3,7,8]. The companion work [2] to this paper has made progress in moving toward an analytical understanding of the plasma response to very large beam charges.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the lack of analytical models for the nonlinear plasma response, it has been noted in a variety of studies that the accelerating and decelerating fields associated with the blowout regime obey a Cerenkov-like scaling [7,[9][10][11]. This scaling [12] predicts that the fields which produce energy loss and gain in the system are proportional to the square of the characteristic maximum frequency in the system (the plasma frequency, !…”

Section: Introductionmentioning

confidence: 99%

Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

Rosenzweig

Barov

Thompson

et al. 2004

Phys. Rev. ST Accel. Beams

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The energy loss and gain of a beam in the nonlinear, ''blowout'' regime of the plasma wakefield accelerator, which features ultrahigh accelerating fields, linear transverse focusing forces, and nonlinear plasma motion, has been asserted, through previous observations in simulations, to scale linearly with beam charge. Additionally, from a recent analysis by Barov et al., it has been concluded that for an infinitesimally short beam, the energy loss is indeed predicted to scale linearly with beam charge for arbitrarily large beam charge. This scaling is predicted to hold despite the onset of a relativistic, nonlinear response by the plasma, when the number of beam particles occupying a cubic plasma skin depth exceeds that of plasma electrons within the same volume. This paper is intended to explore the deviations from linear energy loss using 2D particle-in-cell simulations that arise in the case of experimentally relevant finite length beams. The peak accelerating field in the plasma wave excited behind the finite-length beam is also examined, with the artifact of wave spiking adding to the apparent persistence of linear scaling of the peak field amplitude into the nonlinear regime. At large enough normalized charge, the linear scaling of both decelerating and accelerating fields collapses, with serious consequences for plasma wave excitation efficiency. Using the results of parametric particle-in-cell studies, the implications of these results for observing severe deviations from linear scaling in present and planned experiments are discussed.

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Simulations of a meter-long plasma wakefield accelerator

Cited by 60 publications

References 9 publications

Polarized beam conditioning in plasma based acceleration

Polarized beam conditioning in plasma based acceleration

Electron Bunch Length Measurements in the E-167 Plasma Wakefield Experiment

Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

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