| Autor: |
M. J. Wu, D. Y. Li, J. G. Zhu, T. Yang, X. Y. Hu, Y. X. Geng, K. Zhu, M. J. Easton, Y. Y. Zhao, A. L. Zhang, H. Y. Lu, W. J. Ma, C. Lin, X. Q. Yan |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Physical Review Accelerators and Beams, Vol 23, Iss 3, p 031302 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2469-9888 |
| DOI: |
10.1103/PhysRevAccelBeams.23.031302 |
| Popis: |
Particle emittance quantifies the ability to focus and transport a beam, and is one of the most important parameters for a beamline. The emittance of a proton beam produced by ultraintense laser irradiation of a micron-thick flat solid target has been measured systematically for the first time, using three different methods at different positions along the transport beamline: pepper-pot method, quadrupole triplet scan technique, and single-shot emittance measurement. Emittance growth is shown both in experiments and in simulations using CST. An over 3-fold emittance growth was found for 5 MeV laser-driven protons with an energy spread of ±2% and divergence of ±20 mrad after being transported 5.9 m in the experiment, due to the energy spread and angular dispersion of the protons. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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