# Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame

## Abstract

Laser wakefield acceleration modeling using the Lorentz-boosted frame technique in the particle-in-cell code has demonstrated orders of magnitude speedups. A convergence study was previously conducted in cases with external injection in the linear regime and without injection in the nonlinear regime, and the obtained results have shown a convergence within the percentage level. Here, a convergence study is carried out to model electron self-injection in a 2D–3V configuration. It is observed that the Lorentz-boosted frame technique is capable of modeling complex particle dynamics with a significant speedup. This result is crucial to curtail the computational time of the modeling of future chains of laser wakefield accelerator stages with high accuracy.

- Authors:

- Publication Date:

- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

- OSTI Identifier:
- 1547919

- Alternate Identifier(s):
- OSTI ID: 1527360

- Grant/Contract Number:
- AC0205CH11231

- Resource Type:
- Publisher's Accepted Manuscript

- Journal Name:
- Computer Physics Communications

- Additional Journal Information:
- Journal Name: Computer Physics Communications Journal Volume: 238 Journal Issue: C; Journal ID: ISSN 0010-4655

- Publisher:
- Elsevier

- Country of Publication:
- Netherlands

- Language:
- English

- Subject:
- 43 PARTICLE ACCELERATORS; Lorentz-boosted frame; LWFA; numerical convergence

### Citation Formats

```
Lee, P., and Vay, J. -L. Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame. Netherlands: N. p., 2019.
Web. doi:10.1016/j.cpc.2018.12.013.
```

```
Lee, P., & Vay, J. -L. Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame. Netherlands. doi:10.1016/j.cpc.2018.12.013.
```

```
Lee, P., and Vay, J. -L. Wed .
"Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame". Netherlands. doi:10.1016/j.cpc.2018.12.013.
```

```
@article{osti_1547919,
```

title = {Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame},

author = {Lee, P. and Vay, J. -L.},

abstractNote = {Laser wakefield acceleration modeling using the Lorentz-boosted frame technique in the particle-in-cell code has demonstrated orders of magnitude speedups. A convergence study was previously conducted in cases with external injection in the linear regime and without injection in the nonlinear regime, and the obtained results have shown a convergence within the percentage level. Here, a convergence study is carried out to model electron self-injection in a 2D–3V configuration. It is observed that the Lorentz-boosted frame technique is capable of modeling complex particle dynamics with a significant speedup. This result is crucial to curtail the computational time of the modeling of future chains of laser wakefield accelerator stages with high accuracy.},

doi = {10.1016/j.cpc.2018.12.013},

journal = {Computer Physics Communications},

number = C,

volume = 238,

place = {Netherlands},

year = {2019},

month = {5}

}

DOI: 10.1016/j.cpc.2018.12.013