EMP control and characterisation on high-power laser systems

P Bradford, N. C. Woolsey, G. G. Scott, G. Liao, H. Liu, Y. Zhang, B. Zhu, C. Armstrong, S. Astbury, C. Brenner, P. Brummitt, F. Consoli, I. East, R. Gray, D. Haddock, P. Huggard, P. J. R. Jones, E. Montgomery, I. Musgrave, P. Oliveira & 8 others D. R. Rusby, C. Spindloe, B. Summers, E. Zemaityte, Z. Zhang, Y. Li, P. McKenna, D. Neely

Research output: Contribution to journalArticle

Abstract

Giant electromagnetic pulses (EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical mea- surements and equipment. EMP emission is caused by the acceleration of hot electrons in- side the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers (e.g. ELI, the Extreme Light Infrastructure). We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterisation of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parame- ters. We demonstrate that target stalk geometry, material composition and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3D particle-in-cell simulations are used to inform our conclusions about the effects of stalk geometry on EMP, providing an opportunity for comparison with existing charge separation models.
LanguageEnglish
Number of pages8
JournalHigh Power Laser Science and Engineering
Publication statusAccepted/In press - 19 Mar 2018

Fingerprint

Electromagnetic pulse
electromagnetic pulses
High power lasers
high power lasers
Lasers
Geometry
Hot electrons
polarization (charge separation)
geometry
hot electrons
Electromagnetic waves
electrical measurement
Metal foil
lasers
foils
repetition
electromagnetic radiation
direct current
broadband
Radiation

Keywords

  • electromagnetic pulses
  • EMP emission
  • high power lasers
  • extreme light infrastructure

Cite this

Bradford, P., Woolsey, N. C., Scott, G. G., Liao, G., Liu, H., Zhang, Y., ... Neely, D. (Accepted/In press). EMP control and characterisation on high-power laser systems. High Power Laser Science and Engineering.
Bradford, P ; Woolsey, N. C. ; Scott, G. G. ; Liao, G. ; Liu, H. ; Zhang, Y. ; Zhu, B. ; Armstrong, C. ; Astbury, S. ; Brenner, C. ; Brummitt, P. ; Consoli, F. ; East, I. ; Gray, R. ; Haddock, D. ; Huggard, P. ; Jones, P. J. R. ; Montgomery, E. ; Musgrave, I. ; Oliveira, P. ; Rusby, D. R. ; Spindloe, C. ; Summers, B. ; Zemaityte, E. ; Zhang, Z. ; Li, Y. ; McKenna, P. ; Neely, D. / EMP control and characterisation on high-power laser systems. In: High Power Laser Science and Engineering. 2018.
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abstract = "Giant electromagnetic pulses (EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical mea- surements and equipment. EMP emission is caused by the acceleration of hot electrons in- side the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers (e.g. ELI, the Extreme Light Infrastructure). We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterisation of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parame- ters. We demonstrate that target stalk geometry, material composition and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3D particle-in-cell simulations are used to inform our conclusions about the effects of stalk geometry on EMP, providing an opportunity for comparison with existing charge separation models.",
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author = "P Bradford and Woolsey, {N. C.} and Scott, {G. G.} and G. Liao and H. Liu and Y. Zhang and B. Zhu and C. Armstrong and S. Astbury and C. Brenner and P. Brummitt and F. Consoli and I. East and R. Gray and D. Haddock and P. Huggard and Jones, {P. J. R.} and E. Montgomery and I. Musgrave and P. Oliveira and Rusby, {D. R.} and C. Spindloe and B. Summers and E. Zemaityte and Z. Zhang and Y. Li and P. McKenna and D. Neely",
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Bradford, P, Woolsey, NC, Scott, GG, Liao, G, Liu, H, Zhang, Y, Zhu, B, Armstrong, C, Astbury, S, Brenner, C, Brummitt, P, Consoli, F, East, I, Gray, R, Haddock, D, Huggard, P, Jones, PJR, Montgomery, E, Musgrave, I, Oliveira, P, Rusby, DR, Spindloe, C, Summers, B, Zemaityte, E, Zhang, Z, Li, Y, McKenna, P & Neely, D 2018, 'EMP control and characterisation on high-power laser systems' High Power Laser Science and Engineering.

EMP control and characterisation on high-power laser systems. / Bradford, P; Woolsey, N. C.; Scott, G. G.; Liao, G.; Liu, H.; Zhang, Y.; Zhu, B. ; Armstrong, C.; Astbury, S.; Brenner, C.; Brummitt, P.; Consoli, F.; East, I.; Gray, R.; Haddock, D.; Huggard, P.; Jones, P. J. R.; Montgomery, E.; Musgrave, I.; Oliveira, P.; Rusby, D. R.; Spindloe, C.; Summers, B.; Zemaityte, E.; Zhang, Z.; Li, Y.; McKenna, P.; Neely, D.

In: High Power Laser Science and Engineering, 19.03.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - EMP control and characterisation on high-power laser systems

AU - Bradford, P

AU - Woolsey, N. C.

AU - Scott, G. G.

AU - Liao, G.

AU - Liu, H.

AU - Zhang, Y.

AU - Zhu, B.

AU - Armstrong, C.

AU - Astbury, S.

AU - Brenner, C.

AU - Brummitt, P.

AU - Consoli, F.

AU - East, I.

AU - Gray, R.

AU - Haddock, D.

AU - Huggard, P.

AU - Jones, P. J. R.

AU - Montgomery, E.

AU - Musgrave, I.

AU - Oliveira, P.

AU - Rusby, D. R.

AU - Spindloe, C.

AU - Summers, B.

AU - Zemaityte, E.

AU - Zhang, Z.

AU - Li, Y.

AU - McKenna, P.

AU - Neely, D.

PY - 2018/3/19

Y1 - 2018/3/19

N2 - Giant electromagnetic pulses (EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical mea- surements and equipment. EMP emission is caused by the acceleration of hot electrons in- side the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers (e.g. ELI, the Extreme Light Infrastructure). We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterisation of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parame- ters. We demonstrate that target stalk geometry, material composition and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3D particle-in-cell simulations are used to inform our conclusions about the effects of stalk geometry on EMP, providing an opportunity for comparison with existing charge separation models.

AB - Giant electromagnetic pulses (EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical mea- surements and equipment. EMP emission is caused by the acceleration of hot electrons in- side the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers (e.g. ELI, the Extreme Light Infrastructure). We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterisation of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parame- ters. We demonstrate that target stalk geometry, material composition and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3D particle-in-cell simulations are used to inform our conclusions about the effects of stalk geometry on EMP, providing an opportunity for comparison with existing charge separation models.

KW - electromagnetic pulses

KW - EMP emission

KW - high power lasers

KW - extreme light infrastructure

UR - https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering

M3 - Article

JO - High Power Laser Science and Engineering

T2 - High Power Laser Science and Engineering

JF - High Power Laser Science and Engineering

SN - 2095-4719

ER -

Bradford P, Woolsey NC, Scott GG, Liao G, Liu H, Zhang Y et al. EMP control and characterisation on high-power laser systems. High Power Laser Science and Engineering. 2018 Mar 19.