Proton Calorimetry/Meetings/2017/03/29 - Revision history

SimonJolly at 14:11, 29 March 2017

2017-03-29T14:11:39Z

← Older revision		Revision as of 14:11, 29 March 2017
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	** Secondary particles in Geant4 difficult to characterise due to range cut.		** Secondary particles in Geant4 difficult to characterise due to range cut.
	** <code>GetTotalEnergyDeposit()</code> doesn't include energy from secondary particles...		** <code>GetTotalEnergyDeposit()</code> doesn't include energy from secondary particles...
			** Need to check whether 20 micron range cut is short enough with '''Adam Gibson'''.
			* Clear build-up effect from secondary protons:
			** Need to check RBE of the resulting short-range protons.
			** Effect of hadronic build-up means Bragg curve incorrect for entrance dose.

SimonJolly at 13:35, 29 March 2017

2017-03-29T13:35:24Z

← Older revision		Revision as of 13:35, 29 March 2017
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	'''ABF''':		'''ABF''':
	*		* Looking at specific peak PMT current:
			** Acquire data with different rates:
			** Calculate average current to compare at what point saturation occurs.
			** Matches predictions almost exactly!
			** Small rise at "saturation" current before drop off.
			* Will pass on information to Hamamatsu to "guide" them in producing lower gain PMTs.

	'''LK''':		'''LK''':
	* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/LK20170329_ProtonBuildUp.pdf Looking at dose build-up effect in proton therapy and secondary particles].		* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/LK20170329_ProtonBuildUp.pdf Looking at dose build-up effect in proton therapy and secondary particles].
	** ~~Dose increases at start of X-ray depth dose curve~~ due to ~~short-~~range ~~electron shower~~.		** Secondary particles in Geant4 difficult to characterise due to range cut.
	** ~~Effect present for protons but much smaller.~~		** <code>GetTotalEnergyDeposit()</code> doesn't include energy from secondary particles...
	* Managed to reproduce results over 10mm from ~~Benjamin Tham's previous simulations~~.
	* Build-up effect present for both electrons and secondary hadrons, but build-up much shorter for electron shower (~1mm).
	* Will run simulations for 100MeV and 200MeV with higher statistics.

SimonJolly at 13:15, 29 March 2017

2017-03-29T13:15:48Z

← Older revision		Revision as of 13:15, 29 March 2017
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	=== Present ===		=== Present ===

	'''Simon Jolly''', '''Laurent Kelleter'''		'''Simon Jolly''', '''Laurent Kelleter''', '''Anastasia Basharina-Freshville'''

			'''ABF''':
			*

	'''LK''':		'''LK''':

SimonJolly: Created page with "== Minutes for UCL Proton Calorimetry Meeting, 29th March 2017 (D17, Physics & Astronomy, UCL) == === Present === '''Simon Jolly''', '''Laurent Kelleter''' '''LK''': * [http:/..."

2017-03-29T13:05:35Z

Created page with "== Minutes for UCL Proton Calorimetry Meeting, 29th March 2017 (D17, Physics & Astronomy, UCL) == === Present === '''Simon Jolly''', '''Laurent Kelleter''' '''LK''': * [http:/..."

New page

== Minutes for UCL Proton Calorimetry Meeting, 29th March 2017 (D17, Physics & Astronomy, UCL) ==

=== Present ===

'''Simon Jolly''', '''Laurent Kelleter'''

'''LK''':
* [http://www.hep.ucl.ac.uk/pbt/wikiData/presentations/2017/LK20170329_ProtonBuildUp.pdf Looking at dose build-up effect in proton therapy and secondary particles].
** Dose increases at start of X-ray depth dose curve due to short-range electron shower.
** Effect present for protons but much smaller.
* Managed to reproduce results over 10mm from Benjamin Tham's previous simulations.
* Build-up effect present for both electrons and secondary hadrons, but build-up much shorter for electron shower (~1mm).
* Will run simulations for 100MeV and 200MeV with higher statistics.