= LhARA Weekly Meeting 5th May 2020 =

== Meeting details ==

14:00 Room 532, Blackett Lab.

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== 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.