Proton Calorimetry/Meetings/2018/11/14: Difference between revisions

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** Contact '''Adam Gibson''' for existing Geant4 Cherenkov simulations.
** Contact '''Adam Gibson''' for existing Geant4 Cherenkov simulations.
** Find optimal [https://satechi.net/collections/usb-type-c Satechi USB-C adapter].
** Find optimal [https://satechi.net/collections/usb-type-c Satechi USB-C adapter].
'''MH''':
* Pure Geant4 pCT simulation matches results from GATE.
* Reconstruction not quite working: resulting image does not represent actual object.
* Possibly to do with matching up pairs of protons from pre/post object: might be possible to assign individual proton ID.
* Issues with merging results from multiple simulations: cannot use more than 70,000 particles per simulation.
* '''To Do''':
** Contact '''Simon Rit''' to discuss reconstruction issues.
** Contact '''Ben Morgan''' at Warwick to find solutions to simulation merging issues.


'''OM''':
'''OM''':
* Starting working on Geant4 simulations.
* Finished working through first Geant4 tutorial on photon beam: will look at proton simulations.
* Reading up on C++: '''SJ''' suggested getting started with the same tutorials as '''JO''' and '''MH'''.
* Plan of action is to work from Geant4 to BDSIM, then add in CAD modelling, before improving CAD model.
* Plan of action is to work from Geant4 to BDSIM, then add in CAD modelling, before improving CAD model.
* '''To Do''':
** Proton Geant4 tutorials.
** Take a look at BDSIM: will contact '''SJ''' when ready to move on to BDSIM tutorials.


'''SS''':
'''SS''':
* Looking through data from [[Proton_Calorimetry/Experimental_Runs/2018/Oct25-6|Birmingham experimental runs]].
* Started reconstructing spectra from LeCroy waveform data from [[Proton_Calorimetry/Experimental_Runs/2018/Oct25-6|Birmingham experimental runs]]:
* Results generally look good:
** Parameters need tweaking in '''Dan Walker's''' reconstruction code to match Caen spectra.
** Clear double peak for eyepatch data.
** Needed to widen window in which pulse arrives: '''SJ''' suggests contacting '''Dan''' to implement code to find pulse rising edge.
** Some spectra show unexpected double peaks: '''SJ''' suggests PMT rate effects.
* Still trying to quantify LeCroy scope dead time: will contact '''SJ''' when next tests need to be made to check setup.
* '''To Do''':
** Talk to '''Dan Walker''' about pulse rising edge finding.
** Check total number of protons in each peak for eyepatch data.
** Send spectra to '''Tony Price'''.
** Plan to have all Birmingham data analysed by Christmas: both spectra and tracker.
 
'''MH''':
* Still checking through Geant4 simulations:
** Phantom rotating in visualiser but not in actual simulation...
** Rotation now fixed: managed to reconstruct and view images of phantom.
* Need to convert ITK format to something with 2D slices to analyse data:
** '''SJ''' suggests contacting '''Jamie McClelland''' for DICOM conversion and viewing tools.
* Probably don't need to run on Legion: better reconstruction using fan beam with 10 million protons.
* '''To Do''':
* '''To Do''':
** Analyse scope data by Christmas.
** Assign ID to each proton to speed up pre and post matching.
** Take data for LeCroy scope trigger rate test.
** Contact '''Simon Rit''' and '''Niels Krah''' to convert ITK images to DICOM.
** Contact '''Jamie McClelland''' for DICOM image conversion and reconstruction tools.
** Transfer report due 30th November.


'''FFF''':
'''FFF''':
* Will be working on front end detector electronics design and readout for project.
* Met '''Daniel Spring''' from Hamamatsu to look into optimal photodiodes:
* Identified possible photodiodes for range calorimeter.
** New products ''may'' be available that fit our needs.
* Contacted Hamamatsu but specific photodiode not available: will discuss with '''Anastasia Basharina-Freshville''' and '''SJ''' to contact Hamamatsu rep directly.
** Custom photodiode also possible: removing resin that covers photodiode reduces transverse size but makes it ''much'' more sensitive.
 
'''LK''':
* Working on build-up simulation paper.
* Preparing detector for HIT trip.

Latest revision as of 16:30, 14 November 2018

Minutes for UCL Proton Calorimetry Meeting, 14th November 2018 (D17, Physics & Astronomy, UCL)

Present

Simon Jolly, Raffaella Radogna, Laurent Kelleter, Jeremy Ocampo, Saad Shaikh, Fernando Franco Felix, Ohie Mayenin, James Golbourn

Everybody introduced themselves to James; James introduced himself to everyone.

JG

  • Reading through relevant chapters of Proton Therapy Physics by Paganetti.
  • Lots of background reading on QA devices and processes: LK promises to forward on paper on PSI QA systems.
  • To Do:
    • Read through QA paper from LK.
    • 4 days a week of MSc courses: Advanced QM, Molecular BioPhys, Physics of Stars; Climate and Energy, Advanced Stats, Molecular Physics. Also studying particle physics.

JO:

  • Almost finished Geant4 tutorials:
    • Geant4 installed on laptop.
    • Installed MacPorts and ROOT on Mac.
  • Had questions about how Geant4 calculates dose deposition.
  • Still going through reading list provided by Jamie McClelland and Adam Gibson.
  • To Do:
    • Build Geant4 simulations of Cherenkov emission in water and scintillation light output from scintillator block.
    • Contact Adam Gibson for existing Geant4 Cherenkov simulations.
    • Find optimal Satechi USB-C adapter.

OM:

  • Finished working through first Geant4 tutorial on photon beam: will look at proton simulations.
  • Plan of action is to work from Geant4 to BDSIM, then add in CAD modelling, before improving CAD model.
  • To Do:
    • Proton Geant4 tutorials.
    • Take a look at BDSIM: will contact SJ when ready to move on to BDSIM tutorials.

SS:

  • Started reconstructing spectra from LeCroy waveform data from Birmingham experimental runs:
    • Parameters need tweaking in Dan Walker's reconstruction code to match Caen spectra.
    • Needed to widen window in which pulse arrives: SJ suggests contacting Dan to implement code to find pulse rising edge.
  • Still trying to quantify LeCroy scope dead time: will contact SJ when next tests need to be made to check setup.
  • To Do:
    • Talk to Dan Walker about pulse rising edge finding.
    • Check total number of protons in each peak for eyepatch data.
    • Send spectra to Tony Price.
    • Plan to have all Birmingham data analysed by Christmas: both spectra and tracker.

MH:

  • Still checking through Geant4 simulations:
    • Phantom rotating in visualiser but not in actual simulation...
    • Rotation now fixed: managed to reconstruct and view images of phantom.
  • Need to convert ITK format to something with 2D slices to analyse data:
    • SJ suggests contacting Jamie McClelland for DICOM conversion and viewing tools.
  • Probably don't need to run on Legion: better reconstruction using fan beam with 10 million protons.
  • To Do:
    • Assign ID to each proton to speed up pre and post matching.
    • Contact Simon Rit and Niels Krah to convert ITK images to DICOM.
    • Contact Jamie McClelland for DICOM image conversion and reconstruction tools.
    • Transfer report due 30th November.

FFF:

  • Met Daniel Spring from Hamamatsu to look into optimal photodiodes:
    • New products may be available that fit our needs.
    • Custom photodiode also possible: removing resin that covers photodiode reduces transverse size but makes it much more sensitive.
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