Puffin: A three dimensional, unaveraged free electron laser simulation code

Campbell, Laurence; McNeil, Brian

doi:10.1063/1.4752743

Cited by 65 publications

(76 citation statements)

References 31 publications

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“…The FEL simulation code Puffin [7,8] was also used in a steady-state mode, which has periodic boundary conditions applied over one wavelength of the radiation field/electron beam [12]. Full 3D-Puffin simulations were used to model a LPA driven FEL which assumed Gaussian distributions for the electron pulse duration and other electron parameters.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The following simulations were carried out using the code Puffin [7,8] which is a non-averaged FEL simulation code that may be used to simulate FEL parameters typical of those generated by LPA output . In contrast in [6] they used Genesis code.…”

Section: N Rmentioning

confidence: 99%

“…A beam of peak current I peak =9.6 kA , charge of = Q pC 40 , and unchirped energy of 600 MeV was used [6]. A planar undulator period of l = 15 u mm with an undulator pole gap of [7], so that the radiation output will then be in the weak superradiant mode of operation to give a single, short radiation pulse output [14]. Figure 4 shows the total radiated energy in the FEL for the Gaussian electron bunch.…”

Section: D Laser-wakefield Accelerator (Lwa) Driven Felmentioning

confidence: 99%

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Modelling a laser plasma accelerator driven free electron laser

et al. 2019

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Free-electron lasers (FEL) are the brightest, coherent sources of short wavelength radiation from the VUV into the x-ray. There is much research interest in reducing the cost and the size of FELs by utilising new accelerator techniques. Laser-plasma accelerator (LPA) are a promising accelerator for next generation compact FEL light sources with many potential advantages due to the high acceleration gradient and large peak currents they offer. The electron beams of a LPA typically have a smaller transverse emittance, a large energy spread and tend to be of shorter duration and higher current than conventional Radio Frequency (RF) accelerators. In this paper, a FEL driven by an electron beam from a typical LPA was simulated using the 3D FEL simulation code Puffin. It is shown that lowering the homogenous electron beam energy spread increases the radiation energy output in a short undulator and , as become less than the FEL, or Pierce parameter (r), then the peak radiation energy increases and the saturation length reduces significantly as expected.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: N Rmentioning

confidence: 99%

Section: D Laser-wakefield Accelerator (Lwa) Driven Felmentioning

confidence: 99%

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Modelling a laser plasma accelerator driven free electron laser

et al. 2019

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“…Due to the growing interest for the unaveraged FEL modeling, a number of approaches were developed for onedimensional simulations [12,14], and three-dimensional simulations [15,16]. One approach consists in using the multifrequency model, which is a pseudo-spectral time domain (PSTD) method, where the Maxwell equations are integrated in a predefined Fourier domain [17].…”

Section: Introductionmentioning

confidence: 99%

A spectral unaveraged algorithm for free electron laser simulations

Andriyash

Lehe

Malka

2015

Journal of Computational Physics

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We propose and discuss a numerical method to model electromagnetic emission from the oscillating relativistic charged particles and its coherent amplification. The developed technique is well suited for free electron laser simulations, but it may also be useful for a wider range of physical problems involving resonant field-particles interactions. The algorithm integrates the unaveraged coupled equations for the particles and the electromagnetic fields in a discrete spectral domain. Using this algorithm, it is possible to perform full three-dimensional or axisymmetric simulations of short-wavelength amplification. In this paper we describe the method, its implementation, and we present examples of free electron laser simulations comparing the results with the ones provided by commonly known free electron laser codes.Comment: submitted to J. Comp. Phy

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“…Recently, a simulation code without this assumption has been developed (Campbell & McNeil, 2012) for special applications such as FELs taking advantage of electron beams that can violate the above condition, which are not the scope of SIMPLEX. Instead, we have derived mathematical formulas facilitating the numerical implementation of FEL processes with undulators having an arbitrary field distribution, which can apply to any harmonic numbers.…”

Section: Numerical Implementation Of Fel Equations In Simplexmentioning

confidence: 99%

SIMPLEX: simulator and postprocessor for free-electron laser experiments

Tanaka

2015

J Synchrotron Radiat

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SIMPLEX is a computer program developed for simulating the amplification process of free-electron lasers (FELs). It numerically solves the so-called FEL equations describing the evolution of the radiation field and growth of microbunching while the electron beam travels along the undulator. In order to reduce the numerical cost, the FEL equations have been reduced to more convenient forms for numerical implementation by applying reasonable approximations. SIMPLEX is equipped with a postprocessor to facilitate the retrieval of desired information from the simulation results, which is crucial for practical applications such as designing the beamline and analyzing the experimental results.

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Puffin: A three dimensional, unaveraged free electron laser simulation code

Cited by 65 publications

References 31 publications

Modelling a laser plasma accelerator driven free electron laser

Modelling a laser plasma accelerator driven free electron laser

A spectral unaveraged algorithm for free electron laser simulations

SIMPLEX: simulator and postprocessor for free-electron laser experiments

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