Proton Calorimetry/Meetings/2023/03/15: Difference between revisions

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=== [[ELogs/SaadShaikh|Saad Shaikh]] ===
=== [[ELogs/SaadShaikh|Saad Shaikh]] ===
*Delivered update on Geant4 simulation development, slides can be found here.
*Delivered update on Geant4 simulation development, slides can be found [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2023/SS230315_Geant4.pptx here].
**Found a list of values for Gaussian energy straggling to produce curves similar to those measured at UCLH, across clinical energy range.
**Found a list of values for Gaussian energy straggling to produce curves similar to those measured at UCLH, across clinical energy range.
**Added detector messenger to allow Birks' constant to be set at runtime.
**Added detector messenger to allow Birks' constant to be set at runtime.
*Gave presentation on analysis on PARTREC beam test, slides can be found here.
*Gave presentation on analysis on PARTREC beam test, slides can be found [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2023/SS230315_PARTREC.pptx here].
**Beam quality worsens at lower energies, possibly due to aluminium beam degrader.
**Beam quality worsens at lower energies, possibly due to aluminium beam degrader.
**Appear to have linear scaling of average charge measured with beam current.
**Appear to have linear scaling of average charge measured with beam current.
Line 15: Line 15:
**There is some interplay with Birks' constant and range – worse values of Birks' constant give worse range results.
**There is some interplay with Birks' constant and range – worse values of Birks' constant give worse range results.
**Possibly have 0.8mm systematic offset from reference data, but need more reference data to confirm.
**Possibly have 0.8mm systematic offset from reference data, but need more reference data to confirm.
*Programmed flash memory on USB104 board so that device is programmed with DDC232 code on power-up.
**Updated Raspberry Pi and loaded latest versions of DAQ code: set up works with Sonia's GUI.
*Will start PBT journal club with Sonia to start consolidating research from other groups on scintillators for proton therapy & ionisation quenching.
*Organised first meeting of UCL HEP Climate Change projects and drafted a call for proposals for 4 small funded projects for PhD students.

Latest revision as of 10:18, 16 March 2023

Minutes for UCL Proton Calorimetry Meetings, 15th March

Present

Saad Shaikh, Simon Jolly, Sonia Escribano, Maya Maciurzynska

Saad Shaikh

  • Delivered update on Geant4 simulation development, slides can be found here.
    • Found a list of values for Gaussian energy straggling to produce curves similar to those measured at UCLH, across clinical energy range.
    • Added detector messenger to allow Birks' constant to be set at runtime.
  • Gave presentation on analysis on PARTREC beam test, slides can be found here.
    • Beam quality worsens at lower energies, possibly due to aluminium beam degrader.
    • Appear to have linear scaling of average charge measured with beam current.
    • Fit results do vary with different beam current: effect is more pronounced at lower (worse) energies, best results still have 0.1-0.2 mm difference in range.
    • There is some interplay with Birks' constant and range – worse values of Birks' constant give worse range results.
    • Possibly have 0.8mm systematic offset from reference data, but need more reference data to confirm.
  • Programmed flash memory on USB104 board so that device is programmed with DDC232 code on power-up.
    • Updated Raspberry Pi and loaded latest versions of DAQ code: set up works with Sonia's GUI.
  • Will start PBT journal club with Sonia to start consolidating research from other groups on scintillators for proton therapy & ionisation quenching.
  • Organised first meeting of UCL HEP Climate Change projects and drafted a call for proposals for 4 small funded projects for PhD students.