تقرير
Monte Carlo modelling of the linear Breit-Wheeler process within the GEANT4 framework
| العنوان: | Monte Carlo modelling of the linear Breit-Wheeler process within the GEANT4 framework |
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| المؤلفون: | Watt, R. A., Rose, S. J., Kettle, B., Mangles, S. P. D. |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Plasma Physics, High Energy Physics - Experiment, Physics - Accelerator Physics |
| الوصف: | A linear Breit-Wheeler module for the code Geant4 has been developed. This allows signal-to-noise ratio calculations of linear Breit-Wheeler detection experiments to be performed within a single framework. The interaction between two photon sources is modelled by treating one as a static field, then photons from the second source are sampled and tracked through the field. To increase the efficiency of the module, we have used a Gaussian process regression, which can lead to an increase in the calculation rate by a factor of up to 1000. To demonstrate the capabilities of this module, we use it to perform a parameter scan, modelling an experiment based on that recently reported by Kettle et al. [1]. We show that colliding $50\,$fs duration $\gamma$-rays, produced through bremsstrahlung emission of a $100\,$pC, $2\,$GeV laser wakefield accelerator beam, with a $50\,$ps X-ray field, generated by a germanium burn-through foil heated to temperatures $>\,150\,$eV, this experiment is capable of producing $>1\,$ Breit-Wheeler pair per shot. Comment: 7 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevAccelBeams.26.054601 |
| URL الوصول: | http://arxiv.org/abs/2302.04950 |
| رقم الأكسشن: | edsarx.2302.04950 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevAccelBeams.26.054601 |
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