Application of three-reflector beam waveguide to HPM radiating antenna

Shi, 秋实 Qiu; Guozhi, 刘国治 Liu; Yongchang, 焦永昌 Jiao; Wenhua, 黄文华 Huang; Qing, 侯青 Hou

doi:10.3788/hplpb20102201.0131

Cited by 4 publications

(3 citation statements)

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“…Most strong lasers are super-Gaussian beams, so they are approximately taken as flat-topped beams. [23,24] In order to reduce the calculated amount, here the influence of the nonuniform distribution of the light spot can be neglected. Meanwhile, considering that the transmission characteristics of the laser in water is exponential decay, the attenuation factor is set 074209-2 as γ (its size is relevant to the light wavelength and the characteristics of water), the correction factor of forward scattering is c f , the correction factor of backscattering is c b , and the expression for P(X,Y, Z) can be obtained…”

Section: Theoretical Analysismentioning

confidence: 99%

Phase transition model of water flow irradiated by high-energy laser in a chamber

Jin¹,

Sun²,

Zhang³

et al. 2014

Chinese Phys. B

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Section: Theoretical Analysismentioning

confidence: 99%

Phase transition model of water flow irradiated by high-energy laser in a chamber

Jin¹,

Sun²,

Zhang³

et al. 2014

Chinese Phys. B

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“…The information of simulated particle based on the grids obtained by MC simulation, such as particle flux, number and weight, is used to generate the global weight window parameters, which are in turn used to in the next iteration of MC simulation. The method has been widely used for global radiation environment calculation of complex models such as reactor devices [11][12][13], tokamak devices [7,14], nuclear power plants [15,16]and thick shields [17,18].…”

Section: Introductionmentioning

confidence: 99%

Global variance reduction method based on volume and non-counting area corrections for global Monte Carlo simulations

Liu,

Zuo,

Niu

et al. 2023

Second International Conference on Applied Statistics, Computational Mathematics, and Software Engineering (ASCMSE 2023)

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A Global Variance Reduction (GVR) method based on volume and non-counting area corrections is proposed to improve the efficiency of the Monte Carlo simulation of the radiation field in the large space. The volume correction factor is introduced to modify the global weight window parameters to solve the over-splitting problem caused by the volume difference of counting grids. The GVR method based on volume correction yields a global figure of merit G FOM about 39 times larger than the direct simulation, and the standard relative error  is reduced by about two orders of magnitude.For the problem of the excessive computational resources occupied by the non-counting area, the non-counting area correction method is proposed, which results in a further 40% improvement of the G FOM factor. The average error and maximum error of the radiation field in the large space obtained by three iterations of simulations using the corrected GVR method are 1.2% and 4.2%, respectively. And the G FOM factor is improved by about 561 times compared with the direct simulation. The GVR method based on volume and non-counting area corrections can effectively guide the simulated particle transport, which improves the accuracy and efficiency of the global Monte Carlo simulation of the radiation field.

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“…In addition, the dielectric layer can absorb and shield electrons emitted from the cathode surface or attenuate the intensity. Experiments are performed on the 2-MV inductive voltage adder (IVA) [11] to test the above methods. The rod-pinch diode and vacuum tank configuration is illustrated in Fig.…”

mentioning

confidence: 99%

Electron Emission Suppression from Cathode Surfaces of a Rod-Pinch Diode

Gao

Yin

Sun

et al. 2010

Chinese Phys. Lett.

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The theory and method of suppressing electron emission from cathode surfaces is introduced, including increasing the emission threshold, reducing the surface electric field and shielding the emitted electrons. The stainless steelgraphite and Teflon-graphite composite cathodes are designed to test the above methods for a rod-pinch diode. The experiments are performed on the inductive voltage adder, and the results indicate that the Teflon-graphite composite cathode is effective in suppressing electron emission from the specified cathode surface, while the stainless steel-graphite composite cathode fails. The reasons are analyzed theoretically.

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Application of three-reflector beam waveguide to HPM radiating antenna

Cited by 4 publications

References 0 publications

Phase transition model of water flow irradiated by high-energy laser in a chamber

Phase transition model of water flow irradiated by high-energy laser in a chamber

Global variance reduction method based on volume and non-counting area corrections for global Monte Carlo simulations

Electron Emission Suppression from Cathode Surfaces of a Rod-Pinch Diode

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