Proton Calorimetry/Meetings/2024/09/18

Minutes for UCL Proton Beam Therapy Group Meetings, 18th September

Present

Joe Bateman, Sonia Escribano, Febian, Simon Jolly, Raffaella Radogna (via zoom)

Raffaella Radogna

• Pushing for masters student to complete analysis of SciFi monitor (but not with protons from Linear Beam)
• It is okay for measurement of the beam spot position through the centroid of the cluster
• Beam size measurements very sensitive to geometric variation between coupling between pixels and fibres - need to find a way to calibrate fibre response
  • Pixel sharing between fibres due to pixel pitch
• Potential calibration method through shining collimated light onto each of the fibres
• Noticing reduced intensity on the central pixels
• Has travel money to use up before end of 2024 - plans to come to UCL.
  • w/b of 28th October to look at SciFi tracker and discuss integrated design
  • Possible second trip in December for beam test if new electronics and scintillator sheets are ready

Febian

• Upcoming CDT event on 24/10 to present a 2 minute presentation and poster

Joseph Bateman

• Working on scripting for sourcing the relevant environments to run Geant4 via CVMFS on the cluster.
• Joe and Simon had meeting w/ Ilaria and Giorgio from Maastro to discuss more about FRED-MC for dose reconstruction from QuADProBe measurements and the hardware requirements etc.

Sonia Escribano

• Preparing a talk for the Science Slam session at the DKFZ Medical Physics Summer School
• Suggestions for QuARC Calibration Issues:
  • Compare the method Saad was using and the new method with the old shoot through files
  • Check with the Manchester and PARTREC data
• To check up on status of scintillators and follow up with Harry & Martin

Simon Jolly

• Harry has been in charge of dealing with scintillator sheets but has been occupied by SuperNEMO
• Have rough cuts from nuvia - either go to Daytron high precision machinery or to someone who has one of these machines. Daytron can do better 10 um flatness
• Need Martin to machine the flatness

• Things needed to sort before next beam test:
  • Oxford to do small changes to zmod board
  • Pete Hastings have new ddc boards
  • New scintillators for a full stack -
  • If doing full QuADProBe test only need two stacks

• Plan for PTCOG Argentina Talk:
  • Full 3D treatment plan MC reconstruction with log file data and QuADProBe measurements at Maastro and at PSI
  • Unsure whether SciFi tracker will be available so will likely have to use Tony's CMOS sensor again if available.

• Aim for QuARC beam test before end of 2024 - at UCLH