wiki:Research/LhARA/RadiationBiology/Meetings/2025-10-02

LhARA radiobiology; meeting: 02Oct25; 14:00 BST

ZOOM: https://imperial-ac-uk.zoom.us/j/98220889714?pwd=SM90vOF7BKSXoU3mD9q7OwBQo4IVB3.1

Present: CD, EM, JP, DA, AFr, TP, TP(Jnr), RW, MH, JMcG, KL

Agenda

  1. Minutes and actions:
  • CD: Upload Technical Summary
    • Done
  • MH: Send Calvin the CAD of the cell carousel
    • Done
  • DA: Investigate increasing Mylar window thickness
    • Done
  • JP: Consumables plan
    • Done
  • CW: Check service and testing of hoods
    • Stands?
  • JMcG/KL: Remove old calendar invites
    • Done
  • KL/CD: Update angular divergence in LLO
    • Stands
  1. Strathclyde : BT, ED, RW
  • Processing the RCF from Phase 1
    • All the RCF scanned on the relevant scanner now
    • Calvin, Nick and Robbie to meet to discuss
    • Robbie to send the RCF data to Tony as well - he can calculate the calibration curve
    • Once we understand the dose:
      • Organise Robbie, Emma and Jason to discuss irradiation plan
  • Alter PMQ/target mounts
    • ~5cm closer after moving the mounts
  • Add position referencing systems to PMQ drives
    • Robbie has built this in
  • Install cell rotation mount
    • Fine alignment and checking rotation works correctly still to be done
  • Further updates:
  • TP now setup to switch on quite quickly. Can pump it down easily
  1. Simulation CD, DA, AFr:
  • Results of an Au foil in the beamline
    • Mean dose drops by a factor of 10 minimum
    • Diaza to sample transverse distribution at several points along the beamline
    • Source production to be improved
  • Calvin to investigate defocussing the quads further
  • Practicality of implementing a scattering foil
    • For Biology
      • Reduced mean dose only a problem if still aiming to do FLASH
    • Physically
      • SCAPA have an arm to use to place the foil in
      • The simplest position is in the vacuum tube (or maybe entry to tube)
        • Robbie to provide the viable positions of the foil in the beamline for simulations
      • Can obtain 10um Gold easily (Goodfellas)
      • Chris Spindloe to be the help if the transverse size needs to be reduced down
  1. BioPrep EM, JP:
  • Dry-run
    • Delayed due to hood availability
    • To be done at the beginning of the actual run.
    • Should not cause a delay to the actual run if the dry run cannot be completed
  • Dates for actual run
    • 27th Oct - 21st Nov
    • Emma on annual leave 24th to 31st Oct
    • Jason tied up on the week of 10th. Might be available on week of 3rd.
    • Dates can be pushed back if necessary
  • Plan for run
    • First week is obtaining proton focus again
    • Next two weeks is irradiation
  1. Beam Diagnostics KL, CD:
  • Show RCF holder idea
    • Could do with something to fix the holder to the cell carousel
    • Robbie and Calvin to sit down and discuss this
  • Ken update on a sparse beam diagnostic
    • Jessel Patel is a good man to talk to at RAL about this
    • Ken going to chase Chris and try and find money too
  1. DoNM
  • 16th October
  1. AoB
  • Tony's baby has officially joined LhARA!

Summary of actions

  • CD/RW/ND: Meet to discuss RCF calibration
  • RW: Send TP RCF data
  • RW: Fine tune installation of cell carousel
  • DA: Sample simulated beamline more frequently
  • CD: Investigate defocussing to improve uniformity
  • CD/RW: Design RCF holder
  • KL: Discuss sparse diagnostic at CLF

Last modified 5 days ago Last modified on Oct 2, 2025, 4:11:27 PM
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