LhARA Weekly Meeting 5th May 2020

Meeting details

14:00 Room 532, Blackett Lab.

Zoom details:

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Meeting ID: 981 6136 1260 Password: See meeting invite email

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Meeting ID: 981 6136 1260 Password: See meeting invite email

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Meeting ID: 981 6136 1260 Password: See meeting invite email

Agenda

• Capture section.
• Simulations.
  • Stage 1.
  • Plasma.
  • Space charge.
• A.O.B.
  • Status of the publication.
  • Future meetings.

Notes

Participants: A Kurup, K Long, J Hughes, T Descalu, J Parsons, G Hicks, HT Lau, O Ettlinger, R McLauchlan, W Shields, C Whyte, J Matheson, C Hardiman.
Apologies: J Pasternak, G Schettino.

• Capture
  • TD: Looking to simulate the electron cloud in the Gabor lens and look at plasma instabilities. Issue with getting access to the VSIM code on the SCARF cluster.
  • KL: do you run VSIM at Strathclyde? CW: Yes.
  • CW:
    • Now having weekly meetings.
    • Document on dimensions of initial design.
    • Bob will run some simulations to investigate diocotron instability.
    • Will try to look at how an e-beam can be used to fill the lens.
• Simulation
  • Stage 1
    • TD: replacing solenoid in the BDSIM simulation with Gabor lens fields.
      • Implemented transfer matrix and an idealised electric field map in BDSIM.
      • Issue with difference between ideal electric field map and the transfer matrix.
        • AK: Could this be due to the integrator?
        • WS: the matrix integrator will always be used for an r-matrix element.
    • HTL
      • Want to look at improving the input beam used in tracking simulations., i.e. look at using Smilei.
  • Laser-target simulations.
    • OE: Previous 2D distribution came from a simulation of TNSA using a thin foil using EPOCH.
    • OE: Resolution of a 3D simulation will be poor, 2D will be better resolved.
    • Discussion on generating 2D versus 3D.
    • GH: Documentation in the group to get Smilei up and running. Smilei can output at a different resolution than the simulation which EPOCH can't.
    • AK, OE, GH, HTL and TD to continue discussing details of how to proceed after this meeting.
  • Space charge
    • AK: would be good to investigate GPT algorithms (verify performance) and look at other algorithms/codes.
    • HTL: Would like to do this, depends if there's time.
    • KL: Is there still a plan to implement space charge in BDSIM?
      • WS: Yes but not immediately.
• AOB
  • Publication: deadline for comments is Monday and then will be finalised.
  • Future meetings.
    • AK: Need to think about other activities that can be progressed given the lockdown situation.
    • KL: Radiobiology?
      • JPar: Clatterbridge is still in lockdown. Maybe could get back in June.
        • Can keep everyone updated on ongoing analysis of previous experiments.
        • Discussion on how to coordinate this.
      • JPar to email regarding fixing the best time for regular meetings on radiobiology.

Action items

• AK, OE, GH, HTL and TD to continue discussing details of how to proceed with the laser-target simulations.
• JPar to email regarding fixing the best time for regular meetings on radiobiology.