Proton Calorimetry/Meetings/2017/11/22

From PBTWiki
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Minutes for UCL Proton Calorimetry Meeting, 22nd November 2017 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Laurent Kelleter, Anastasia Basharina-Freshville, Jordan Silverman, Dan Walker, Matthieu Hentz

ABF:

  • Spoke to Ruben Saakyan about Nuvia sheets:
    • Ruben visiting Prague in the next few weeks.
    • Waiting for Nuvia to determine whether they can do 2 mm sheets.
  • Spoke to Hamamatsu about flat panel detectors:
    • Contact person might be called Simon...
    • Preferred detector 50x50 mm version: will check the differences.
  • Working on fitting to single module spectrum:
    • Issues with fitting in ROOT: version dependent...
    • Now fitting to tail as well as peak, but transition still needs work.
    • Will add in exponential term to 'join' two parts of fit.

JS:

  • Spoke to Glen Cowan at RHUL on ROOT curve fitting:
    • Suggested to add in another convolution;
    • If that doesn't work, try doing piecewise fit.
  • Will prototype in Python before moving over to ROOT.

DW:

  • Very close to finishing off producing spectra from Lecroy binary files.
  • Will then move on to curve fitting...

MH:

  • Running Clatterbridge simulations with changes in nozzle cap angle:
    • Very little difference in spectra.
    • OMA Monte Carlo school indicated overlap in geometry boundaries may be a problem...
  • Changed how particles recorded from stepping action to sensitive detector.
  • Given up on installing Geant4 on MacBook Pro: will switch over to piss poor Lenovo CDT laptop:
    • SJ will ask Tim Scanlon about swapping for a machine with more horsepower.

LK:

  • Discussing build-up paper with Adam Gibson:
    • Simplified definition of build-up to be based on Bragg curve.
    • Understanding more about the physics!
    • Reran simulations at higher energies: absorber too small.
    • Will contact various OMA colleagues to understand origin of high entrance dose for protons above 200 MeV.