Design and calculation of a side-coupled accelerating structure

Liu, Mingxuan; Wu, Cong-Feng; Tang, Yimeng; Huang, Guirong

doi:10.1007/s41365-017-0309-5

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…Similar to the coupling properties, the field asymmetries need to be conducted using 3D-EM codes either. According to dipole contribution to the electric field asymmetry, 28)…”

Section: Field Asymmetry Analysismentioning

confidence: 99%

Analysis and design considerations of coupler tuning based on improved equivalent circuit and 3D-EM simulations

Hu¹,

Zeng²,

Li³

et al. 2022

Jpn. J. Appl. Phys.

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Power coupler is critical for the successful development of high-intensity linacs. As a main task in its design, pulsed heating affects the beam brightness, even might damage the structures on high-repetition rates. Although shaping the incident RF-pulse can reduce such risk by speeding up the field filling time, a complicated RF sub-system is inevitable. While another mechanism of reducing the filling time, which is increasing the coupling factor, presents its advantages. In this context, based on the analysis of temperature rise for a coupled cavity, the resonant frequency variations have been qualitatively investigated by improving the equivalent circuit via adopting a mutual inductance, the results have been verified by electro-magnetic (EM) codes. Moreover, by taking a waveguide-coupler with an inserted-post for instance, further EM simulations have demonstrated that the tunable coupler can achieve a balance among a proper coupling range, a small frequency offset and an acceptable field-asymmetry.

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“…Similar to the coupling properties, the field asymmetries need to be conducted using 3D-EM codes either. According to dipole contribution to the electric field asymmetry, 28)…”

Section: Field Asymmetry Analysismentioning

confidence: 99%

Analysis and design considerations of coupler tuning based on improved equivalent circuit and 3D-EM simulations

Hu¹,

Zeng²,

Li³

et al. 2022

Jpn. J. Appl. Phys.

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“…A temperature-dependent parameterized free energy formula will also provide help, such as in the works of [138,139,140]. In a modified Fisher model, the free energy of fragment is parameterized as the Weiszäcker-Beth semiclassical mass formula with a density and temperature dependent coefficients [115,141,142,143,144,145,146,147,148]. One can refer to the systematic comparison of thermodynamic models in Refs.…”

Section: Thermaldynamics and Statistical Models 321 Thermaldynamicsmentioning

confidence: 99%

“…In the first stage of abrasion, they calculate the abrasion cross section with probability P Ns,Zs (b) (N s , Z s denote the neutrons and protons in the projectile-like fragment) at an impact parameter b. An improvement has been achieved by incorporating an impact-parameter-dependent temperature profile in the abrasion simulation [166] (the non-uniform temperature for primary fragments and cold fragments have also been shown [140,144,145,167,168,169,170]). In the second stage, the fragment in the first stage undergoes expanding and breaking up process, which turns into many excited composites and nucleons.…”

Section: Abrasion Plus Canonical Thermodynamic Modelmentioning

confidence: 99%

Shannon information entropy in heavy-ion collisions

2018

Progress in Particle and Nuclear Physics

101

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The general idea of information entropy provided by C.E. Shannon "hangs over everything we do" and can be applied to a great variety of problems once the connection between a distribution and the quantities of interest is found. The Shannon information entropy essentially quantify the information of a quantity with its specific distribution, for which the information entropy based methods have been deeply developed in many scientific areas including physics. The dynamical properties of heavy-ion collisions (HICs) process make it difficult and complex to study the nuclear matter and its evolution, for which Shannon information entropy theory can provide new methods and observables to understand the physical phenomena both theoretically and experimentally. To better understand the processes of HICs, the main characteristics of typical models, including the quantum molecular dynamics models, thermodynamics models, and statistical models, etc, are briefly introduced. The typical applications of Shannon information theory in HICs are collected, which cover the chaotic behavior in branching process of hadron collisions, the liquid-gas phase transition in HICs, and the isobaric difference scaling phenomenon for intermediate mass fragments produced in HICs of neutron-rich systems. Even though the present applications in heavy-ion collision physics are still relatively simple, it would shed light on key questions we are seeking for. It is suggested to further develop the information entropy methods in nuclear reactions models, as well as to develop new analysis methods to study the properties of nuclear matters in HICs, especially the evolution of dynamics system.

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Longitudinal impedance measurements and simulations of a three-metal-strip kicker

Liu

Tian

et al. 2023

NUCL SCI TECH

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Design and calculation of a side-coupled accelerating structure

Cited by 3 publications

References 8 publications

Analysis and design considerations of coupler tuning based on improved equivalent circuit and 3D-EM simulations

Analysis and design considerations of coupler tuning based on improved equivalent circuit and 3D-EM simulations

Shannon information entropy in heavy-ion collisions

Longitudinal impedance measurements and simulations of a three-metal-strip kicker

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