SimonJolly at 14:59, 7 February 2018

2018-02-07T14:59:23Z

← Older revision		Revision as of 14:59, 7 February 2018
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	'''SJ''':		'''SJ''':
	* ~~Making progress~~ with [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/~~DW_LeCroyData_31-01-18~~.~~pptx extracting data from Leroy binary files~~]:		* Meeting with '''LK''' at TU Wien HEPHY on 1st February:
	** ~~Aim is to load LeCroy waveform files, identify pile-up~~, ~~calculate ADC counts and do it quickly~~.		** TU Wien have 26x26mm sensor developed for Belle they want to use for proton CT.
	** ~~Previously~~ used ~~χ<sup>2</sup>~~ for ~~selecting bad pulses; Schmitt trigger on rising edge faster~~.		** Sensor is very early in pCT development: readout is slow (~1,000 frames/s).
	** ~~Integrating whole pulse gives broader peak~~ with ~~larger mean than Caen~~.		** Potential for pCT collaboration.
	** ~~Shortening integration window makes LeCroy peak match with Caen, even~~ for ~~low counts~~.		** They are sharing experimental time with us at MedAustron on 22/23 March.
			** We will have 6 hours on Thursday night and ~4 hours on Friday night.
			** Will make single module measurements for them: MedAustron rate and pCT calorimetry.
			** Accommodation is booked: 4 rooms in Orange Wings (close to MedAustron).
			* Both Zarges enclosures are finally here:
			** Smaller one is painted: waiting on specs from ISDI to choose patch panel connectors.
			** Larger one just arrived: Derek will paint tomorrow.

			'''LK''':
			* Running tests on [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/LK20180207_ScintillatorSheetTestsWithLED.pdf Scintillator Sheets using LED]:
			** First tests with Nikon DSLR carried out on 5/6 February.
			** Some sheets not properly painted, so light leaks in around fibre.
			** Camera highly adjustable: '''RS''' suggests running tests with LED settings used for PRIAPUS saturation.
			** Lens aberrations seen with high light levels.
			** Variation seen across sheet but average light level approximately the same for all sheets.
	* ''To Do'':		* ''To Do'':
	** ~~Update information on Wiki.~~		** Some sheets need repainting: will speak to '''Derek Attree'''.
	** Badger '''~~Tony Price~~''' ~~for tracker files!~~!.		** Chasing up ISDI!
	** ~~Work out how~~ to ~~calculate incoming trigger rate for LeCroy scope~~.		** Test USB3 patch panel connector.
			** Finish off analysis.
			** Add Remote Desktop information to Wiki.

	'''JS''':		'''ABF''':
	* Reanalysed scintillator sheet thicknesses:
	** 3 mm sheets are closer to 2.75 mm but variation is mostly below 100 microns.
	** 2 mm sheets have 2 groupings:
	** 2.0 mm group has better flatness than 2.6 mm group.
	** Thickness sigma of 3 mm sheets 90% below 30 micron target.
	* Continuing to work on Clatterbridge simulations:
	** Needs a list of things to do!
	* ''To Do'':		* ''To Do'':
	** ~~Write~~ up scintillator ~~sheet measurements and post iPython notebook with analysis~~.		** Continue LED tests: rerun with settings that saturated PRIAPUS; set up radioactive source.
	** '''MH''' ~~will~~ but ~~'''JS''' in touch with '''Jactina Yap''' to include more components in beamline~~.		** Label scintillator sheets.
			** Polish scintillator sheets.
			** Analyse LED data.

			'''RS''':
			* Had meeting with Hamamatsu.
			* 2 potential products available:
			** Linear image sensor.
			** Position sensitive linear image sensor.
			* Both active pixel sensor strips.
			* Industrial devices: less than £50 each!
			* Readout available but expensive (£800).

	'''MH''':		'''MH''':
	* ~~Update from '''Jacinta Yap'''~~ on ~~Clatterbridge:~~		* Focussing on buffered event writing in Geant4 to speed up simulations.
	** Spoken to Andrzej Kacperek about positions of ~~cap and nozzle~~: ~~positions and locations shouldn't make difference to treatment~~.		* Fixed issue by avoiding use of pointers: needed a custom accumulator class.
	** ~~Dose monitor foils are 20 microns with air gap in between of 2 mm~~.		* Factor of 30 speed up with buffering!
	** '''~~Jacinta~~'~~'' needs to know input parameters, particularly energy and energy spread.~~		* Code needs tidying up..
	* ~~Trying to replicate bug in buffered readout for~~ Geant4.		* ''To Do'':
	* ~~Currently compiling Geant4 on Virtual Machine on~~ '''~~new~~''' ~~MacBook~~.		** Tidy up Geant4 buffering code.
			** Update Wiki.

			'''JS''':
			* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/JS_07_02_18.pptx Reanalysed scintillator sheet thicknesses after painting]:
			** Difference in thickness of 10 to 70 microns after painting.
	* ''To Do'':		* ''To Do'':
	** ~~Buffering of readout in Geant4~~.		** Write up scintillator sheet measurements on Wiki page.
	** ~~Put '''JS'''~~ in ~~touch with '''Jacinta Yap'''~~.		** CAD import/export in Geant4.

SimonJolly: Created page with "== Minutes for UCL Proton Calorimetry Meeting, 7th February 2018 (D17, Physics & Astronomy, UCL) == === Present === '''Simon Jolly''', '''Ruben Saakyan''', '''Matthieu Hentz'''..."

2018-02-07T13:32:01Z

Created page with "== Minutes for UCL Proton Calorimetry Meeting, 7th February 2018 (D17, Physics & Astronomy, UCL) == === Present === '''Simon Jolly''', '''Ruben Saakyan''', '''Matthieu Hentz'''..."

New page

== Minutes for UCL Proton Calorimetry Meeting, 7th February 2018 (D17, Physics & Astronomy, UCL) ==

=== Present ===

'''Simon Jolly''', '''Ruben Saakyan''', '''Matthieu Hentz''', '''Jordan Silverman''', '''Anastasia Basharina-Freshville''', '''Laurent Kelleter'''

'''SJ''':
* Making progress with [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2018/DW_LeCroyData_31-01-18.pptx extracting data from Leroy binary files]:
** Aim is to load LeCroy waveform files, identify pile-up, calculate ADC counts and do it quickly.
** Previously used χ<sup>2</sup> for selecting bad pulses; Schmitt trigger on rising edge faster.
** Integrating whole pulse gives broader peak with larger mean than Caen.
** Shortening integration window makes LeCroy peak match with Caen, even for low counts.
* ''To Do'':
** Update information on Wiki.
** Badger '''Tony Price''' for tracker files!!.
** Work out how to calculate incoming trigger rate for LeCroy scope.

'''JS''':
* Reanalysed scintillator sheet thicknesses:
** 3 mm sheets are closer to 2.75 mm but variation is mostly below 100 microns.
** 2 mm sheets have 2 groupings:
** 2.0 mm group has better flatness than 2.6 mm group.
** Thickness sigma of 3 mm sheets 90% below 30 micron target.
* Continuing to work on Clatterbridge simulations:
** Needs a list of things to do!
* ''To Do'':
** Write up scintillator sheet measurements and post iPython notebook with analysis.
** '''MH''' will but '''JS''' in touch with '''Jactina Yap''' to include more components in beamline.

'''MH''':
* Update from '''Jacinta Yap''' on Clatterbridge:
** Spoken to Andrzej Kacperek about positions of cap and nozzle: positions and locations shouldn't make difference to treatment.
** Dose monitor foils are 20 microns with air gap in between of 2 mm.
** '''Jacinta''' needs to know input parameters, particularly energy and energy spread.
* Trying to replicate bug in buffered readout for Geant4.
* Currently compiling Geant4 on Virtual Machine on '''new''' MacBook.
* ''To Do'':
** Buffering of readout in Geant4.
** Put '''JS''' in touch with '''Jacinta Yap'''.

Proton Calorimetry/Meetings/2018/02/07 - Revision history

SimonJolly at 14:59, 7 February 2018

SimonJolly: Created page with "== Minutes for UCL Proton Calorimetry Meeting, 7th February 2018 (D17, Physics & Astronomy, UCL) == === Present === '''Simon Jolly''', '''Ruben Saakyan''', '''Matthieu Hentz'''..."