Proton Calorimetry/Meetings/2018/01/10: Difference between revisions

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== Minutes for UCL Proton Calorimetry Meeting, 6th December 2017 (D17, Physics & Astronomy, UCL) ==
== Minutes for UCL Proton Calorimetry Meeting, 10th January 2018 (D17, Physics & Astronomy, UCL) ==


=== Present ===
=== Present ===
Line 7: Line 7:
'''ABF''':
'''ABF''':
* Update on [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/ABF_groupMeeting_10.01.2018.pdf single module detector simulations and scintillator paint tests]:
* Update on [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/ABF_groupMeeting_10.01.2018.pdf single module detector simulations and scintillator paint tests]:
** Was smearing pre and post simulations: post-simulation always used 8.5%; now only smearing pre-simulation with variable resolution.
** Larger FWHM smearing now shows increase in spread in detected resolution.
** Now correlation between Monte Carlo truth and reconstructed energy spectrum.
** Still a difference between MC Truth and reconstructed resolutions.
** Still seeing low energy tail.
** 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''':
'''LK''':
* PPRIG was good!
* Set up Nikon D70 camera from Adam Gibson to take images remotely.
** Mike Merchant wants particle spectra for Geant4-DNA simulations.
* Will check with '''Michaela Esposito''' whether we can use PRaVDA ISDI sensor.
** Very helpful comments during evening meal...
* Spoken to ISDI about commercial sensors: waiting for datasheet.
** Not sure whether initial proton retains 'primary proton' ID.
* Everything should be finished with paper:
** Waiting for Adam to write his parts and polish off.
** Clinical part needed from Richard Amos.
** No answer from Tracey Underwood: becoming less likely...
* Lots of code housekeeping!
* Will contact '''Michaela Esposito''' and '''Tony Price''' about ISDI sensors.


'''JS''':
'''JS''':
* Gone back to looking into CAD modelling in Geant4.
* Working through CAD modelling in Geant4:
* Going through Matthieu's Clatterbridge simulations:
** Should be able to import GDML files into Geant4.
** Learning how simulations run.
** Autodesk does not support GDML... 
** Investigating introducing sensitive detectors for particle measurements.
** 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''':
'''DW''':
* Improved code to integrate waveforms.
* Bug-hunting in binary conversion code: some integrals coming out negative...
* Reconstructed Caen ADC spectrum: needs corresponding LeCroy binary files.

Latest revision as of 12:06, 17 January 2018

Minutes for UCL Proton Calorimetry Meeting, 10th January 2018 (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...
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