Symplectic integrators with adaptive time step applied to runaway electron dynamics
Sign Up to like & getrecommendations! Published in 2019 at "Numerical Algorithms"
DOI: 10.1007/s11075-018-0636-6
Abstract: Studying the dynamics of runaway electrons has theoretical and practical significance. As the system is highly relativistic, multi-scale and nonlinear, accurate and efficient numerical methods with long-term stability are necessary. In this paper, we develop… read more here.
Keywords: electron dynamics; runaway electron; step; adaptive time ... See more keywords
Pulsed Gas Lasers Pumped by a Runaway Electron Initiated Discharge
Sign Up to like & getrecommendations! Published in 2017 at "Russian Physics Journal"
DOI: 10.1007/s11182-017-1212-6
Abstract: The generation parameters are investigated in a runaway electron preionized diffuse discharge (REP DD). Laser generation is produced in different spectral bands from the IR to VUV range. New modes of the nitrogen laser operation… read more here.
Keywords: pulsed gas; runaway electron; lasers pumped; gas lasers ... See more keywords
Luminescence of crystals excited by a runaway electron beam and by excilamp radiation with a peak wavelength of 222 nm
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4996965
Abstract: This paper presents research data on cathodoluminescence, photoluminescence, and Cherenkov radiation at 200–800 nm excited in crystals with different refractive indices by a subnanosecond runaway electron beam and by KrCl excilamp radiation with a peak wavelength… read more here.
Keywords: runaway electron; radiation peak; excilamp radiation; peak wavelength ... See more keywords
Main modes of runaway electron generation during a breakdown of high-pressure gases in an inhomogeneous electric field
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0052686
Abstract: Using our recently proposed method, we have identified three modes of runaway electron generation. This method is based on the recording of a dynamic displacement current using a current collector. It makes it possible to… read more here.
Keywords: modes runaway; runaway electron; generation; electron generation ... See more keywords
Runaway electron mitigation by applied magnetic perturbations in RFX-mod tokamak plasmas
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Fusion"
DOI: 10.1088/0029-5515/57/1/016014
Abstract: Thanks to its advanced system for the control of magnetohydrodynamic modes, the RFX-mod device run as a tokamak is particularly suited to the study of the possible impact on runaway electron (RE) de-confinement in response… read more here.
Keywords: plasmas; runaway electron; applied magnetic; magnetic perturbations ... See more keywords
Generation and registration of runaway electron beams during the breakdown of highly overvoltaged gaps filled with dense gases
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/aad8dc
Abstract: The breakdown of the gaps providing inhomogeneous electric field strength distribution fed by voltage pulses with subnanosecond risetime has been experimentally studied. Using a four-channel ICCD camera and an ultrafast streak camera, the dynamics of… read more here.
Keywords: generation; runaway electron; electron beam; physics ... See more keywords
A new hard x-ray spectrometer for runaway electron measurements in tokamaks
Sign Up to like & getrecommendations! Published in 2023 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/acd46c
Abstract: Runaway electron gamma-ray detection system, a novel hard x-ray (HXR) spectrometer optimized for bremsstrahlung radiation measurement from runaway electrons in fusion plasmas, has been developed. The detector is based on a 1‘×1’ LaBr3:Ce scintillator crystal… read more here.
Keywords: spectrometer; hard ray; ray; runaway electron ... See more keywords
Adjoint method and runaway electron avalanche
Sign Up to like & getrecommendations! Published in 2017 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/59/2/024003
Abstract: The adjoint method for the study of runaway electron dynamics in momentum space Liu et al (2016 Phys. Plasmas 23 010702) is rederived using the Green's function method, for both the runaway probability function (RPF)… read more here.
Keywords: runaway electron; avalanche; method; method runaway ... See more keywords
Runaway electron experiments at COMPASS in support of the EUROfusion ITER physics research
Sign Up to like & getrecommendations! Published in 2018 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/aae04a
Abstract: The role of the COMPASS tokamak in research of generation, con nement and losses of Runaway Electron (RE) population is presented. Recently, two major groups of experiments aimed at improved understanding and control of the… read more here.
Keywords: compass support; support eurofusion; runaway electron; research ... See more keywords
Self-consistent simulation of resistive kink instabilities with runaway electrons
Sign Up to like & getrecommendations! Published in 2021 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ac2af8
Abstract: A new fluid model for runaway electron simulation based on fluid description is introduced and implemented in the magnetohydrodynamics code M3D-C1, which includes self-consistent interactions between plasma and runaway electrons. The model utilizes the method… read more here.
Keywords: runaway electron; self consistent; simulation; runaway electrons ... See more keywords
The impact of fusion-born alpha particles on runaway electron dynamics in ITER disruptions
Sign Up to like & getrecommendations! Published in 2023 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/acc4de
Abstract: In the event of a tokamak disruption in a D-T plasma, fusion-born alpha particles take several milliseconds longer to thermalise than the background. As the damping rates drop drastically following the several orders of magnitudes… read more here.
Keywords: fusion born; fusion; iter disruptions; alpha particles ... See more keywords