Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Ronald H. Cohen"'
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 9, p 091301 (2015)
A stack of thin, closely spaced conducting foils has been investigated by Lund et al. [Phys. Rev. ST Accel. Beams 16, 044202 (2013)] as a passive focusing lens for intense ion beams. The foils mitigate space-charge defocusing forces to enable the bea
Externí odkaz:
https://doaj.org/article/e9129931ad3c468f8b78071bf4c791cc
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 4, p 044202 (2013)
Ion beams (including protons) with low emittance and high space-charge intensity can be propagated with normal incidence through a sequence of thin metallic foils separated by vacuum gaps of order the characteristic transverse beam extent to transpor
Externí odkaz:
https://doaj.org/article/658c9b347cd447a68689d9b02e6393f9
Autor:
M. R. Dorr, Ronald H. Cohen, Wonjae Lee, T.D. Rognlien, Sergei Krasheninnikov, Mikhail Dorf, Jeffrey Hittinger, Maxim Umansky
Publikováno v:
Contributions to Plasma Physics. 58:445-450
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c21135a5f738809971bc098973140cdb
https://doi.org/10.1002/ctpp.201700161
https://doi.org/10.1002/ctpp.201700161
Publikováno v:
Contributions to Plasma Physics. 54:517-523
Here, COGENT is a continuum gyrokinetic code for edge plasma simulations being developed by the Edge Simulation Laboratory collaboration. The code is distinguished by application of a fourth-order finite-volume (conservative) discretization, and mapp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6935a43eeb9844a369aa350ab358bb5
https://doi.org/10.1002/ctpp.201410023
https://doi.org/10.1002/ctpp.201410023
Autor:
Jean-Luc Vay, Steven M. Lund, Ronald H. Cohen, R. A. Kishek, David P. Grote, W.M. Sharp, Alex Friedman, Irving Haber
Publikováno v:
IEEE Transactions on Plasma Science. 42:1321-1334
The Warp code (and its framework of associated tools) was initially developed for particle-in-cell simulations of space-charge-dominated ion beams in accelerators, for heavy-ion-driven inertial fusion energy, and related experiments. It has found a b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a2611f80c8a832ebf121d6dba1c96ab
https://doi.org/10.1109/tps.2014.2308546
https://doi.org/10.1109/tps.2014.2308546
Autor:
David P. Grote, S.M. Lund, J.-L. Vay, Ronald H. Cohen, Aharon Friedman, W.L. Waldron, W.M. Sharp
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:147-152
NDCX-II is a newly completed accelerator facility at LBNL, built to study ion-heated warm dense matter, as well as aspects of ion-driven targets and intense-beam dynamics for inertial-fusion energy. The baseline design calls for using 12 induction ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55fb33d8c6d31009533a51405fd58819
https://doi.org/10.1016/j.nima.2013.05.081
https://doi.org/10.1016/j.nima.2013.05.081
Autor:
Ronald H. Cohen
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 733:129-133
We review some previous results on electron-cloud dynamics and accumulation and the impact of electron clouds on ion beam dynamics, and assess these in the context of a magnetic-quadrupole-based heavy-ion fusion driver. We present a new analysis whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b03f47d18fa97f5979a4659c643d587f
https://doi.org/10.1016/j.nima.2013.05.084
https://doi.org/10.1016/j.nima.2013.05.084
Autor:
Markus Roth, Gabriel Schaumann, S.M. Lund, F.M. Bieniosek, B.G. Logan, Pavel Ni, Ronald H. Cohen, Neil Alexander
Publikováno v:
Laser and Particle Beams. 31:81-88
This paper investigates prospects of utilizing a high-power laser-driven target-normal-sheath-acceleration proton beam for the experimental demonstration of the magnetic self-focusing phenomenon in charged particle beams. In the proposed concept, foc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3933257ec31085b75cc9813f344da29
https://doi.org/10.1017/s0263034612001000
https://doi.org/10.1017/s0263034612001000
Autor:
P. McCorquodale, J. R. Angus, T.D. Rognlien, Sergei Krasheninnikov, Daniel F. Martin, J. C. Compton, M. R. Dorr, Ronald H. Cohen, Phillip Colella, Mikhail Dorf
Publikováno v:
Contributions to Plasma Physics. 52:518-522
In this study, COGENT is a continuum gyrokinetic code for edge plasmas being developed by the Edge Simulation Laboratory collaboration. The code is distinguished by application of the fourth order conservative discretization, and mapped multiblock gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37153ca594f990a51b36c7d5dcdb21bd
https://doi.org/10.1002/ctpp.201210042
https://doi.org/10.1002/ctpp.201210042
Publikováno v:
Contributions to Plasma Physics. 52:539-543
A snowflake magnetic configuration is created in a tokamak when the poloidal magnetic field and its first spatial derivatives become zero at a certain point. The separatrix then acquires a characteristic hexagonal shape reminiscent of a snowflake. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48c71db93efd26d2a03ab40980a0ab93
https://doi.org/10.1002/ctpp.201210046
https://doi.org/10.1002/ctpp.201210046