Proton Calorimetry/Meetings/2017/03/15

Minutes for UCL Proton Calorimetry Meeting, 15th March 2017 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Ruben Saakyan, Laurent Kelleter, Adam Knoetze, Matthieu Hentz, Andreas Christou

Student talks on Friday 17th March: 14.00–15.00

AC:

• Working on waveform integration in ROOT:
  • ROOT can integrate pulses.
  • Possible to set short and long gate equivalent.
  • Preliminary results for integration seem to match Anastasia's results.
• FINALLY have info from LeCroy to read out multiple waveforms from a single binary file:
  • Waveforms are called segments.
  • Sets of waveforms are called sequences.
  • Single variable in binary header defines number of segments.

AK:

• [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/AKnoetze_15.03.2017.pdf Looking at Hamamatsu PMT response to LED:
  • Measurements over wide range of frequencies with fixed current.
  • Also took data with emulator.
  • Odd results from UCL base: probably broken by RS in transit from MedAustron...

MH:

• Looking at emittance and beam profile evolution along Clatterbridge beamline.
• Ignoring protons that fall outside the measurement region in simulations.
• Need to check initial parameters and beam density distributions: will plot intensity distributions to make it clearer.
• Updated geometry based on information from Andrzej.

ABF:

• Started looking at data from MedAustron experimental runs.
• 0.7% FWHM energy resolution at 252MeV!
• Will continue analysing results: can distribute to collaborators once complete.

LK:

• Still looking at photon depth curve in simulations.
• Improved y errors: includes fluctuation in energy deposition.
• Fit looks good but not perfect around Bragg peak.
• Errors on fitted energy underestimated but final range close to reality.
• SJ suggests contacting Roger Barlow (Huddersfield) to discuss fit accuracy.