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| == Minutes for UCL Proton Beam Therapy Group Meetings, 4th February ==
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| === Present ===
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| '''Joe Bateman''', '''Sonia Escribano''', '''Simon Jolly''', '''Raffaella Radogna (via Teams)''', '''Kirsty Hall (from Hamamatsu)'''
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| * Discussion with Kirsty Hall from Hamamatsu about photodiode arrays for scintillating fibre array to allow for better integration with QuARC.
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| * Kirsty to investigate two possible routes for going forward:
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| ** Possibility of having on board DDC or way of connecting S13885-128 photodiode array to DDC board.
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| ** Possibility of having surface mounted photodiodes (such as S12859-021) shrunk to a smaller size so that pixel pitch is comparable with 0.5mm fibre diameter.
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| * Also will look into questions Raffy has a about current experience with S13885-128 photodiode array, i.e.:
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| ** If observed response at saturation (e.g., decreasing signal rather than plateau or charge sharing among neighbours) is expected
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| ** How response of individual photodiodes within array vary and how to characterise this.
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| === [[ELogs/RaffaellaRadogna|Raffaella Radogna]] ===
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| * Discussed with Bari mech eng Producing second prototype with resin material harry suggested - use inventor files (should be able to open fusion) will share with them once harry has finished with the fusion file
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| * Produce 2 new prototypes (frame + fibres + screws etc) and have one sent here
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| * Beam test in Trento
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| ** ~5s per beam
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| ** 10 beam deliveries each for CONV and UHDR calibrations (but may only need 8)
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| ** Background measurement at FSR for 12.5pC acquisition and for for FLASH
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| ** Happy to cut out as many pristine Bragg peaks as necessary to keep within FLASH time limits at Trento
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| ** I.e. 1 minute = 12 Bragg peaks at ~5s per measurements
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| ** Or Bragg peaks at lower measurement time per FLASH Bragg peak (i.e. <5 s)
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| ** Spot scanning at CONV dose rates
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| ** Potentially WET measurement of fibres at next UCLH if using giraffe on new QuARC electronics
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| === [[ELogs/SoniaEscribano|Sonia Escribano]] ===
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| * Looking at new calibration method - now works with txt file that is generated with calibration values
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| * Problem with calibration
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| ** Need calibRMS - need separate file with these values?
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| *** Important for the fit
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| *** Include rms beneath calibration coefficients
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| ** How do we save name of header file for calibration file
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| ** Include in header file which files were used to generate calibration coefficients
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| * In new file structure maybe have new file directory for background data, i.e. calibration, background, date
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| ** For now do it manually
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| * New calibration and fitting procedure
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| ** generate calibration txt files using shoot throughs
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| ** Apply calibration values generates calibrated txt with every single measurement
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| ** Fit data averaged at 25 Hz -read calibrated data and fit at desired frequency (default 25hz)
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| * Things for new experiment
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| ** Raw data = 160*8 (hex length and 8 modules)
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| ** Calibration: 4 calibration_i files
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| ** Calibrate data
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| ** Initially split the raw data in two files for each Bragg peak
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| * Messaged harry about scintillators waiting to hear from John and Wayne but still hasn't sent them scintillator sheets yet
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| * Simon and Sonia to check final design on fusion
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| * How do you ensure consistency between modules if there's difference in coupling etc
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| ** Take Manchester data and do shoot-through calibration in current way then apply it to one of the shoot-through calibration files and see how it looks for each module (i.e. treat each module independently)
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| ** Need to find a way to scale to dose in each of the modules
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| === [[ELogs/JoeBateman|Joe Bateman]] ===
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