Proton Calorimetry/Meetings/2018/01/10

Minutes for UCL Proton Calorimetry Meeting, 6th December 2017 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Ruben Saakyan, Laurent Kelleter, Anastasia Basharina-Freshville, Jordan Silverman, Dan Walker

ABF:

• Update on single module detector simulations and scintillator paint tests:
  • Larger FWHM smearing now shows increase in spread in detected resolution.
  • Still a difference between MC Truth and reconstructed resolutions.
  • MC Truth calculated purely from detector resolution: reconstructed resolution also includes beam energy spread.
  • When subtracting in quadrature, offset is almost constant: intrinsic energy resolution in the beam?
  • Will check energy spread on Matthieu's beam and also rerun simulations with mono-energetic pencil beam.
  • Paint tests with scintillator show large decrease in light output.
  • Increase in signal/noise results from lower photon statistics.
• Paper should be ready in draft form by end of January.

LK:

• Set up Nikon D70 camera from Adam Gibson to take images remotely.
• Will check with Michaela Esposito whether we can use PRaVDA ISDI sensor.
• Spoken to ISDI about commercial sensors: waiting for datasheet.

JS:

• Working through CAD modelling in Geant4:
  • Should be able to import GDML files into Geant4.
  • Autodesk does not support GDML...
  • Need bridging software to do conversion: FreeCAD GDML and FastCAD, both of which have drawbacks...
• Running into problems with OpenGL visualisation for Clatterbridge simulations.

DW:

• Bug-hunting in binary conversion code: some integrals coming out negative...