Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session GO7: Relativistic Laser Plasma Interaction and Particles (ions, electrons, positrons, neutrons) II
9:30 AM–11:54 AM,
Tuesday, November 6, 2018
OCC
Room: B117-119
Chair: Derek Mariscal, Lawrence Livermore National Lab
Abstract ID: BAPS.2018.DPP.GO7.10
Abstract: GO7.00010 : Laser-Driven Proton Acceleration and Focusing using the Orion laser facility
11:18 AM–11:30 AM
Presenter:
Adam Higginson
(Univ. of Strathclyde, UC San Diego)
Authors:
Adam Higginson
(Univ. of Strathclyde, UC San Diego)
Christopher S McGuffey
(UC San Diego)
Ross J Gray
(Univ. of Strathclyde)
Gabriel Schaumann
(TU Darmstadt)
Thomas Hodge
(Queen's Univ. Belfast)
Steve Gales
(AWE plc)
Matthew P Hill
(AWE plc)
Steven F James
(AWE plc)
Jonas Ohland
(TU Darmstadt)
Christopher Spindloe
(CLF, STFC Rutherford)
David Neely
(CLF, STFC Rutherford)
Colin Danson
(AWE plc)
Mingsheng Wei
(GA, San Diego)
Markus Roth
(TU Darmstadt)
Farhat N Beg
(UC San Diego)
Paul McKenna
(Univ. of Strathclyde)
The study of ion acceleration driven by intense (>1020 Wcm-2) laser-solid interactions has received considerable interest over the past decade, motivated by potential applications of the resulting compact ion source in sectors including industry, medicine and defence. Specifically, the work detailed here is of broad relevance to multiple avenues of high energy density physics, as well as the proton fast ignition (PFI) approach to inertial confinement fusion. Presented is a study of laser-driven proton acceleration and focusing using conical targets. Using the Orion laser system at AWE in the UK, delivering a peak intensity of 1021 Wcm-2, a spectrally broad focused component in the range 10 - 30 MeV is measured, with a clear annular structure in the proton beam's spatial distribution near the cut-off energy. An auxiliary laser-driven proton beam, generated using a second short pulse beam, is used to transversely probe the target, to characterize the field structure responsible for the focusing.
To close in on a realistic PFI scenario, multiple long pulsed beams are used to induce plasma expansion around the cone walls, to measure the effect of a dense, long scale-length plasma on the focusing of the proton beam. This is found to quench any focusing effect.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.GO7.10
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2025 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700