Journal ArticleDOI
Study of radio frequency breakdown in pressurized L-band waveguide for the International Linear Collider
TLDR
In this paper, an L-band (1.3 GHz) radio frequency (RF) waveguide system was assembled at SLAC to test components of a high power distribution scheme proposed for the International Linear Collider (ILC).Abstract:
An L-band (1.3 GHz) radio frequency (rf) waveguide system was assembled at SLAC to test components of a high power distribution scheme proposed for the International Linear Collider (ILC). All parts were made of aluminum and pressurized with dry nitrogen. The rf breakdown rate measured in this resonantly powered system is presented as a function of field level at different gas pressures and rf pulse widths (typically, only breakdown thresholds are reported.). The data are compared to predictions of a simple model which relates the breakdown phenomenon to the rate at which the free electron density builds in the gas.read more
Citations
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Journal ArticleDOI
rf conditioning and breakdown analysis of a traveling wave linac with collinear load cells
TL;DR: Huang et al. as mentioned in this paper proposed two methods to analyze the breakdown site mainly based on the forward and the reflected power signals, which indicate the breakdown events happened at the end of the linac and more likely in the first or the second load cell.
Journal ArticleDOI
Design of a compact short pulse positron source based on laser plasma accelerators
Chengzhi Xie,Xiao Chaofan,Zhongyao Xu,Jiaxin Liu,Zheng Gong,H. G. Lu,Sheng Huang,Min Chen,T. Q. Xu,K. D. Wang,X. Q. Yan,Hailong Lu +11 more
TL;DR: In this paper, a collection and transmission system based on laser plasma accelerators is proposed to intensify and narrow the beam divergence for positrons generated from converters, which is composed of a converter, a collimator, a solenoid, quadrupoles, and a slit in the exit.
References
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The mathematical theory of electrical discharges in gases
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Intense and Short Pulse Electric Field (DC and Microwave) Air Breakdown Parameters
TL;DR: In this article, experimental data for the drift velocity and Townsend ionization coefficient in N2 and O2 are utilized to obtain the ionization rates in N 2, O 2 and air.
Journal ArticleDOI
Monte Carlo versus bulk conductivity modeling of RF breakdown of helium
TL;DR: In this paper, a Monte Carlo collision model and a bulk conductivity model have been implemented in the finite-difference time-domain code Lsp to allow simulation of weakly ionized plasmas.
Journal ArticleDOI
High-pressure RF cavities for muon beam cooling
K. Yonehara,M. Alsharo'a,Charles M. Ankenbrandt,R.E. Hartline,Rolland Johnson,Daniel M. Kaplan,M. Kuchnir,Alfred Moretti,Milorad Popovic +8 more
TL;DR: In this article, an 800 MHz RF test cell filled with high pressure gaseous hydrogen was used to study RF breakdown phenomena in hydrogen and helium gases as a function of pressure and temperature.