Proton Calorimetry/Meetings/2017/01/25: Difference between revisions

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* Detector emulator time resolution much coarser than scope data (~160MHz): need to extract subset of individual waveform data to produce approximation of our waveforms.
* Detector emulator time resolution much coarser than scope data (~160MHz): need to extract subset of individual waveform data to produce approximation of our waveforms.
* Next step is to put output of detector emulator into digitiser and try and recreate Clatterbridge results.
* Next step is to put output of detector emulator into digitiser and try and recreate Clatterbridge results.
* Will also replicate Anastasia's experiments with LED light pulser injected into scintillator+PMT.


'''MH''':
'''MH''':
* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/mhentz_doc_full_beamline_a4_25-01-2017.pdf Clatterbridge simulations: now running 1 million events:]
* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/mhentz_doc_full_beamline_a4_25-01-2017.pdf Specification of components for Clatterbridge beamline.]
** Split simulations and submitted to batch farm: reduced simulation time from 24 hrs to 30 mins.  
* Need to check position and construction of dose monitors.
** Will look into longer simulations using different batch farm queues.
* '''SJ''' will send current document to '''Clatterbridge''' and '''Carsten Welsch''' (Liverpool) for checking.
* Updated beamline construction with second dose monitor.
 
** Will put together diagram with coordinates, dimensions and materials to send to Clatterbridge to check dimensions.
'''ABF''':
** Will also collate results to send to '''Carsten Welsch''' at Liverpool for review.
* Looking into frequency-dependent gain from scope data for last Clatterbridge run.
* Using LED light pulser to inject light into scintillator+PMT to corroborate gain changes:
** Results seem to confirm gain variation seen with experimental results.
** Drop in gain somewhere around 20kHz.
* Finished analysing Caen ADC and waveform data from November 2016 runs:
** [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2016/clatterbridge_nov2016_analysis.pdf]
** [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2016/clatterbridge_nov2016_waveform_analysis.pdf]

Revision as of 14:55, 25 January 2017

Minutes for UCL Proton Calorimetry Meeting, 25th January 2017 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Anastasia Basharina-Freshville, Andreas Christou, Adam Knoetze, Matthieu Hentz

AC:

  • Working on analysis of scope waveform data.
    • ROOT will now identify bad pulses!
    • ROOT TSpectrum will analyse waveforms for double peaks based on histogram distribution.
  • Will next try and fit to good waveforms to train pulse filtering and integration.
  • Anastasia suggests looking at low and high rate files with no absorber.
  • Will also complete Java code to import binary files directly into ROOT: need to include input arguments.

AK:

  • Looking at various output spectra from Caen detector emulator.
  • Trying to set spectrum of waveform magnitudes (Caen instructions plus trial and error...).
  • Taking average of "large" waveforms to produce mean waveform for emulator.
  • Detector emulator time resolution much coarser than scope data (~160MHz): need to extract subset of individual waveform data to produce approximation of our waveforms.
  • Next step is to put output of detector emulator into digitiser and try and recreate Clatterbridge results.
  • Will also replicate Anastasia's experiments with LED light pulser injected into scintillator+PMT.

MH:

ABF:

  • Looking into frequency-dependent gain from scope data for last Clatterbridge run.
  • Using LED light pulser to inject light into scintillator+PMT to corroborate gain changes:
    • Results seem to confirm gain variation seen with experimental results.
    • Drop in gain somewhere around 20kHz.
  • Finished analysing Caen ADC and waveform data from November 2016 runs:
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