Experimental demonstration of an electromagnetic pulse mitigation concept for a laser driven proton source
| Autor: | Jerzy Wolowski, Marcin Rosinski, P. Tchórz, J. Ribolzi, A. Zaraś-Szydłowska, J. L. Dubois, L. Ryć, Vladimir Tikhonchuk, D. Makaruk, S. Hulin, Piotr Parys, P. Rączka, J. Badziak |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Range (particle radiation) Proton business.industry Laser 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas Intensity (physics) law.invention Optics law 0103 physical sciences Physics::Accelerator Physics Proton emission 010306 general physics business Instrumentation Astrophysics::Galaxy Astrophysics Beam (structure) Electromagnetic pulse |
| Zdroj: | The Review of scientific instruments. 89(10) |
| ISSN: | 1089-7623 |
| Popis: | The targets that are used to produce high-energy protons with ultra-high intensity lasers generate a strong electromagnetic pulse (EMP). To mitigate that undesired side effect, we developed and tested a concept called the "birdhouse." It consists in confining the EMP field in a finite volume and in dissipating the trapped electromagnetic energy with an electric resistor. A prototype was tested at a 10 TW 50 fs laser facility. The recorded average EMP mitigation ratio is about 20 for frequencies from 100 MHz to 6 GHz. The EMP mitigation ratio attains the level of 50 in the frequency range of 1-2 GHz where microwave emission is maximal. We measured the intensity of proton emission in two directions: along the laser propagation direction and along the edge of the proton beam. We observed that the "birdhouse" induces a two-fold increase of the intensity in the center of the proton beam and a two-fold reduction of the intensity on its edge. We did not observe any modification of the proton beam normalized spectrum. |
| Databáze: | OpenAIRE |
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