Proton deflectometry of a capacitor coil target along two axes

P. Bradford*, M. P. Read, M. Ehret, L. Antonelli, Matthew Khan, N. Booth, K. Glize, D. Carroll, R.J. Clarke, R. Heathcote, S. Ryazantsev, S. Pikuz, C. Spindloe, J.D. Moody, B. B. Pollock, V. T. Tikhonchuk, C. P. Ridgers, J. J. Santos, N. C. Woolsey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A developing application of laser-driven currents is the generation of magnetic fields of picosecond-nanosecond duration with magnitudes exceeding. Single-loop and helical coil targets can direct laser-driven discharge currents along wires to generate spatially uniform, quasi-static magnetic fields on the millimetre scale. Here, we present proton deflectometry across two axes of a single-loop coil ranging from 1 to 2 mm in diameter. Comparison with proton tracking simulations shows that measured magnetic fields are the result of kiloampere currents in the coil and electric charges distributed around the coil target. Using this dual-axis platform for proton deflectometry, robust measurements can be made of the evolution of magnetic fields in a capacitor coil target.

Original languageEnglish
Article numbere11
Number of pages9
JournalHigh Power Laser Science and Engineering
Publication statusPublished - 2 Apr 2020

Bibliographical note

© The Author(s) 2020.


  • laboratory astrophysics
  • laser-driven coil targets
  • laser-plasma interaction
  • proton deflectometry
  • strong magnetic field

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