Note: Experimental platform for magnetized high-energy-density plasma studies at the omega laser facility

Fiksel, G.; Agliata, A.; Barnak, D. H.; Brent, G.; Chang, Po-Yu; Folnsbee, L.; Gates, Greg; Hasset, D.; Lonobile, D. J.; Magoon, J.; Mastrosimone, D.; Shoup, M. J.; Betti, R.

doi:10.1063/1.4905625

Cited by 61 publications

(30 citation statements)

References 9 publications

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“…In addition, we notice that strong magnetic fields on the order of a few tens of Tesla in a small volume can be generated by discharging a high-voltage capacitor through a small wire-wound coil in laboratories [35][36][37], and a pulsed non-destructive magnetic field above 100 Tesla was recently recorded in the Pulsed Field Facility at Los Alamos National Laboratory [38]. Such high magnetic fields are of great interest for controlling laser-plasma interactions [39,40].…”

Section: Discussionmentioning

confidence: 99%

Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field

et al. 2018

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The effect of an external transverse magnetic field on ionization injection of electrons in a laser wakefield accelerator (LWFA) is investigated by theoretical analysis and particle-in-cell simulations. On application of a few tens of Tesla magnetic field, both the electron trapping condition and the wakefield structure changes significantly such that injection occurs over a shorter distance and at an enhanced rate. Furthermore, beam loading is compensated for, as a result of the intrinsic trapezoidal-shaped longitudinal charge density profile of injected electrons. The nonlinear ionization injection and consequent compensation of beam loading lead to a reduction in the energy spread and an enhancement of both the charge and final peak energy of the electron beam from a LWFA immersed in the magnetic field.

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Section: Discussionmentioning

confidence: 99%

Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field

et al. 2018

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“…Based on this understanding it is now becoming possible to control these processes in order to optimize the particle bursts for specific applications. For example, the high numbers (10 12 ) of energetic (> 10 MeV) electrons and positron produced by laser-matter interactions represent an attractive source for pair plasma trapping experiments 11 ; however, existing pulsed-power driven magnetic coils 12 at short-pulse laser facilities achieve magnetic fields that can confine pairs of only a few MeV. To lower the energy of laser-matter interaction generated pairs the sheath on the back side of the target needs to be manipulated to reduce the TNSA.…”

Section: Introductionmentioning

confidence: 99%

Dispersion calibration for the National Ignition Facility electron–positron–proton spectrometers for intense laser matter interactions

Linden

Ramos-Méndez

Faddegon

et al. 2021

Review of Scientific Instruments

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Electron-positron pairs, produced in intense laser-solid interactions, are diagnosed using magnetic spectrometers with image plates, such as the National Ignition Facility (NIF) Electron Positron Proton Spectrometers (EPPS). Although modeling can help infer the quantitative value, the accuracy of the models needs to be verified to ensure measurement quality. The dispersion of low-energy electrons and positrons may be affected by fringe magnetic fields near the entrance of the EPPS. We have calibrated the EPPS with six electron beams from a Siemens Oncor linear accelerator (linac) ranging in energy from 2.7-15.2 MeV as they enter the spectrometer. A Geant4 TOPAS Monte-Carlo simulation was set up to match depth dose curves and lateral profiles measured in water at 100 cm source-surface distance. An accurate relationship was established between the bending magnet current setting and the energy of the electron beam at the exit window. The simulations and measurements were used to determine the energy distributions of the six electron beams at the EPPS slit. Analysis of the scanned image plates together with the determined energy distribution arriving in the spectrometer provide improved dispersion curves for the EPPS.

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“…Even the National Ignition Facility (NIF) is currently considering various possibilities for creating external fields [181]. Different technologies have been used at various research facilities for producing such fields e (a) In vacuum coils which implode every shot and produce fields < 15 T over a volume of < 1 cm 3 [179,182], (b) In vacuum Bitter coils which are held with high voltage epoxy and lucite to produce uniform magnetic fields of < 13 T over a volume of z1 cm 3 [183], and (c) Re-entrant Helmholtz coil which produce uniform magnetic fields up to 40 T over a volume of z1 cm 3 [64]. While the first option provides an exciting possibility of producing fields with non-trivial structures, the risk of debris damage from the coils is very high.…”

Section: Pulsed Power Devicementioning

confidence: 99%

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

Weber

Bechet

Borneis

et al. 2017

Matter and Radiation at Extremes

141

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ELI-Beamlines (ELI-BL), one of the three pillars of the Extreme Light Infrastructure endeavour, will be in a unique position to perform research in high-energy-density-physics (HEDP), plasma physics and ultra-high intensity (UHI) (1022W/cm2) laser–plasma interaction. Recently the need for HED laboratory physics was identified and the P3 (plasma physics platform) installation under construction in ELI-BL will be an answer. The ELI-BL 10 PW laser makes possible fundamental research topics from high-field physics to new extreme states of matter such as radiation-dominated ones, high-pressure quantum ones, warm dense matter (WDM) and ultra-relativistic plasmas. HEDP is of fundamental importance for research in the field of laboratory astrophysics and inertial confinement fusion (ICF). Reaching such extreme states of matter now and in the future will depend on the use of plasma optics for amplifying and focusing laser pulses. This article will present the relevant technological infrastructure being built in ELI-BL for HEDP and UHI, and gives a brief overview of some research under way in the field of UHI, laboratory astrophysics, ICF, WDM, and plasma optics.

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Note: Experimental platform for magnetized high-energy-density plasma studies at the omega laser facility

Cited by 61 publications

References 9 publications

Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field

Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field

Dispersion calibration for the National Ignition Facility electron–positron–proton spectrometers for intense laser matter interactions

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

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