Proton Calorimetry/Meetings/2017/01/11: Difference between revisions
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* Clatterbridge simulations: now running 1 million events: | * [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/mhentz_beamline_characterisation_11-01-2017.pdf Clatterbridge simulations: now running 1 million events:] | ||
** Split simulations and submitted to batch farm: reduced simulation time from 24 hrs to 30 mins. | ** Split simulations and submitted to batch farm: reduced simulation time from 24 hrs to 30 mins. | ||
** Will look into longer simulations using different batch farm queues. | ** Will look into longer simulations using different batch farm queues. | ||
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'''AK''': | '''AK''': | ||
* Finally dividing scope waveform files successfully: each waveform is 2,502 lines ie. 1000.4ns. | * [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/AKnoetze_11.01.2017.pdf Finally dividing scope waveform files successfully: each waveform is 2,502 lines ie. 1000.4ns.] | ||
* Converted data files from August and November: all correctly split up. | * Converted data files from August and November: all correctly split up. | ||
* Python conversion script runs much more quickly (<10mins). | * Python conversion script runs much more quickly (<10mins). | ||
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** Always constant fraction that arrive at photodiode. | ** Always constant fraction that arrive at photodiode. | ||
** Will check photodiode position with single layer. | ** Will check photodiode position with single layer. | ||
* Also looking at energy deposition as a function of depth in fine detail: | * [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/LK20170111_Geant4SegmentedCalo_PhotonCounting_EnergyDep.pdf Also looking at energy deposition as a function of depth in fine detail:] | ||
** Steps appearing in the '''middle''' of each layer... | ** Steps appearing in the '''middle''' of each layer... | ||
** Still investigating origin of error... | ** Still investigating origin of error... | ||
Latest revision as of 16:18, 11 January 2017
Minutes for UCL Proton Calorimetry Meeting, 11th January 2017 (D17, Physics & Astronomy, UCL)
Present
Simon Jolly, Laurent Kelleter, Adam Knoetze, Matthieu Hentz
MH:
- Clatterbridge simulations: now running 1 million events:
- Split simulations and submitted to batch farm: reduced simulation time from 24 hrs to 30 mins.
- Will look into longer simulations using different batch farm queues.
- Updated beamline construction with second dose monitor.
- Will put together diagram with coordinates, dimensions and materials to send to Clatterbridge to check dimensions.
- Will also collate results to send to Carsten Welsch at Liverpool for review.
AK:
- Finally dividing scope waveform files successfully: each waveform is 2,502 lines ie. 1000.4ns.
- Converted data files from August and November: all correctly split up.
- Python conversion script runs much more quickly (<10mins).
- Using this data as detector emulator input:
- Poisson distributed signal rate.
- Constant, actual rate.
- Will take waveforms from 20kHz dataset:
- Normalise magnitudes and overlay waveforms to check variation with amplitude;
- Use only waveforms with amplitude above 70% of max to compare large amplitude waveforms;
- Calculate "ideal" waveform for input to digitiser.
LK:
- Simulation took too long when simulating full internal reflections:
- Always constant fraction that arrive at photodiode.
- Will check photodiode position with single layer.
- Also looking at energy deposition as a function of depth in fine detail:
- Steps appearing in the middle of each layer...
- Still investigating origin of error...