LhARA Weekly Meeting 12th May 2020

Meeting details

14:00 BST

Zoom details:

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

• Action items from previous meeting.
  • 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.
• Status of the publication.
• Capture section.
• Simulations.
  • Stage 1.
  • Laser-target.
• A.O.B.
  • Micro-beam simulations from T. Schneider and Y. Prezado of the Curie Institut

Notes

Participants: A Kurup, K Long, J Hughes, O Ettlinger, G Aymar, TD, CW, HTL, JPas, WS, JPar, T Greenshaw, G Schettino, J Matheson, J Pozimski, G Jones
Apologies: K Kirkby, K Gleason,

• Previous action items:
  • AK, OE, GH, HTL and TD to continue discussing details of how to proceed with the laser-target simulations.
    • Plan to run simulation in 3D and compare the resolution to what we can get for an equivalent 2D simulation.
    • HTL just got an example Smilei input file from George Hicks and will go through it.
  • JPar to email regarding fixing the best time for regular meetings on radiobiology.
    • Will send an email to determine interest in setting up a separate meeting to discuss radiobiology activities. Need to see if we have a separate meeting or keep this in the weekly meetings.
• Publication
  • Deadline was Monday. AK and KL received comments and is in the process of updating the paper.
  • JPas still checking and will send comments soon.
  • HTL checked dose rate calculations and found an error.
    • Discussion on calculation
      • See slides from HT.
      • JPas: Can look at SRIM. JPo has used this before.
      • OE: We use SRIM for modelling radiochromic films. Problem is it only works on Windows.
      • HT ran native Geant4 and saw same results as the BDSIM simulations.
      • JPo: have SRIM on the tablet and will look at checking the energy deposition.
      • Will continue discussion on this after the rest of the meeting.
• Capture - CW
  • Getting things set up to do modelling. Making the right contacts to push this through.
  • Looking at VSIM. Strathclyde has an old version. May want a newer one but it's very expensive. Cluster at Strathclyde has 300Gb RAM and may be available to run simulations on.
  • Bob has physical dimensions to look at back of envelope calculations re diocotron.
  • TD: Working on defining input file in prep for running.
• Stage 1 simulations
  • TD: looking at tracking simulations using a transfer matrix and an idealised electric field for the lens. Discrepancy is much smaller now after discussing with WS (mainly due to the aperture needed to match the optics).
  • Laser-target
    • HTL: See above
    • OE: GH is looking at estimating how long 3D takes, 8 years. Will look at optimising the calculation.
• AOB
  • KL: micro-beams
    • See slides on Micro-beam simulations from T. Schneider and Y. Prezado of the Curie Institut.
    • Want to consider other energies.
      • JPas: to calculate the beam properties properly will require some effort. Can think about incorporating the scanning magnet details in our simulations.
  • Dose rate calculations
    • HTL: May have found a bug, wrong value was used for the mass of the carbon beam.
    • AK to install SRIM on the group's server.
  • TG: Made contact with Carsten Welsch who is interested in scintillating fibre beam monitors.

Action items

• JPar to email regarding fixing the best time for regular meetings on radiobiology.
• AK to install SRIM on the group's server.