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Title: Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and neutron stars. The standard model behind cosmological magnetic fields is the nonlinear amplification of seed fields via turbulent dynamo to the values observed. We have conceived experiments that aim to demonstrate and study the turbulent dynamo mechanism in the laboratory. Here, we describe the design of these experiments through simulation campaigns using FLASH, a highly capable radiation magnetohydrodynamics code that we have developed, and large-scale three-dimensional simulations on the Mira supercomputer at the Argonne National Laboratory. The simulation results indicate that the experimental platform may be capable of reaching a turbulent plasma state and determining the dynamo amplification. As a result, we validate and compare our numerical results with a small subset of experimental data using synthetic diagnostics.
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  1. Univ. of Chicago, Chicago, IL (United States); Univ. of Oxford, Oxford (United Kingdom)
  2. Univ. of Oxford, Oxford (United Kingdom)
  3. Rutherford Appleton Lab., Didcot (United Kingdom); Univ. of Strathclyde, Glasgow (United Kingdom)
  4. CEA, DAM, DIF, Arpajon (France)
  5. Univ. of Chicago, Chicago, IL (United States)
  6. Max Planck Institute for Astrophysics, Garching (Germany); Space Research Institute (IKI), Moscow (Russia)
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Univ. of Wisconsin, Madison, WI (United States)
  10. AWE, West Berkshire (United Kingdom)
  11. Univ. of Rochester, Rochester, NY (United States)
  12. Univ. Paris VI Ecole Polytechnique (France)
  13. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  14. UNIST, Ulsan (South Korea)
  15. Queens Univ. Belfast, Belfast (United Kingdom)
  16. ETH Zurich, Zurich (Switzerland)
  17. Univ. of Oxford, Oxford (United Kingdom); Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 1070-664X; PHPAEN
Grant/Contract Number:
AC02-76SF00515; PHY-0903997; PHY-1619573; 2016R1A5A1013277; B523820; AC02-06CH11357; NA0001944; NA0002724; SC0016566; FWP 57789; EP/M022331/1; EP/N002644/1; EP/N014472/1; AC52-07NA27344
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 4; Journal ID: ISSN 1070-664X
American Institute of Physics (AIP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
Country of Publication:
United States
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1363695; OSTI ID: 1374511