Proton Calorimetry/Meetings/2018/02/14

Minutes for UCL Proton Calorimetry Meeting, 7th February 2018 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Ruben Saakyan, Matthieu Hentz, Jordan Silverman, Dan Walker, Laurent Kelleter

DW:

• Looking into measuring rate of acquisitions for LeCroy scope:
  • No built-in function to do this.
  • Should be possible calculate it using built-in math functions.
  • Manual not particularly clear...
• Looking at tracker data from Tony Price:
  • Structure very simple: each timestamp also has 5 sets of X-Y-Z data for 4 trackers.
• To Do:
  • Make up a list of all equipment needed for Proton_Calorimetry/Experimental_Runs/2018/Feb21

RS:

• Discussions in Sheffield with John MacMillan regarding low gain PMT.
• Low gain tubes are available from RCA, who are long out of business:
  • Designed for use at very high light levels.
  • Only 1 ever made: RS has obtained it from John.
  • Tube has 5 dynode stages.
• We should take to MedAustron! May not have time to test it before though...

LK:

• Running tests on 2mm Scintillator Sheets using LED:
  • All sheets marked with thickness.
  • Sheets clamped then aligned to make sure they are perfectly square to camera.
  • Using minimum aperture with 6s acquisition.
  • Using different fibres: very different light output.
  • Choosing fibre 8 gives more uniform light output from each sheet.
  • Some measurements have much higher light levels.
  • Repeating measurements gives highly repeatable light level for each sheet.
  • Light levels within +/-25% for each sheet (+-10% for 3mm sheets).
• To Do:
  • Visit ISDI on Friday.
  • Run through sensor setup.
  • Bring back to UCL.
  • Get sensor working.

JS:

• Scintillator sheet thickness measurements added to [2018/FebScintSheets Wiki page].
• Autodesk Inventor currently installing for model construction and STEP-file export.
• To Do:
  • Make CAD models of Clatterbridge beamline components.
  • Export models as Geant4-compatible components.
  • Rerun simulations to check differences in simulations with CAD components.

MH:

• Finished cleaning up simulation:
  • Properly commented, neat code.
  • Buffered readout also cleaned up: just needs to specify certain variables in run macro.
• Wiki needs updating.
• In contact with Jacinta Yap about Clatterbridge simulations:
  • Had contact with Oleg regarding previous simulations.
  • A file has been sent, but probably completely wrong...
• Finishing off CDT courses and coursework.
• Reading up on CT reconstruction: Inverse Problems course still running.
• To Do:
  • Update Wiki.
  • Finish off Exception handling.
  • Group project submitted end of March.