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Re: Position calculations on start/stop scintillators [message #18250 is a reply to message #18233]

Tue, 19 May 2015 12:19

thuyuk
Messages: 68
Registered: July 2014

continuous participant

From: *ific.uv.es

Hi Michael,

Thanks for the explanation in detail.

For the anomaly you detected regarding to the time delay for each PMT, this might be due to the scintillator material, that it seems to have 1.58 of refraction index according to the data sheet of the BC420 of Saint Gobain. So the theoretical formula would allready need a correction just because of the n constant, what do you think? Considering that there might be imperfections inside the scintillator plastic, the times from the PMTs would differ slightly. This is my first impression, maybe I'm totally wrong.

Regarding to the part that you explained how should one treat the data without any reference interaction point, I think I'm lost when you say;

Quote:

... all possible combinations of the 64 calibration coefficients ...

What are the all possible combinations? Do you mean all combinations of the PMT pairs?

Thanks!
Tayfun

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[Message index]

		Position calculations on start/stop scintillators By: LScruton on Wed, 08 April 2015 18:24
		Re: Position calculations on start/stop scintillators By: miree on Thu, 09 April 2015 15:16
		Re: Position calculations on start/stop scintillators By: thuyuk on Thu, 07 May 2015 17:29
		Re: Position calculations on start/stop scintillators By: miree on Fri, 08 May 2015 11:23
		Re: Position calculations on start/stop scintillators By: miree on Mon, 11 May 2015 13:12
		Re: Position calculations on start/stop scintillators By: thuyuk on Tue, 12 May 2015 13:06
		Re: Position calculations on start/stop scintillators By: miree on Tue, 12 May 2015 15:24
		Re: Position calculations on start/stop scintillators By: thuyuk on Tue, 12 May 2015 15:39
		Re: Position calculations on start/stop scintillators By: miree on Tue, 12 May 2015 16:40
		Re: Position calculations on start/stop scintillators By: thuyuk on Wed, 13 May 2015 10:56
		Re: Position calculations on start/stop scintillators By: miree on Wed, 13 May 2015 14:56
		Re: Position calculations on start/stop scintillators By: thuyuk on Thu, 14 May 2015 12:07
		Re: Position calculations on start/stop scintillators By: miree on Fri, 15 May 2015 10:48
		Re: Position calculations on start/stop scintillators By: thuyuk on Tue, 19 May 2015 12:19
		Re: Position calculations on start/stop scintillators By: miree on Tue, 19 May 2015 14:29
		Re: Position calculations on start/stop scintillators By: miree on Wed, 20 May 2015 14:13
		Re: Position calculations on start/stop scintillators By: thuyuk on Thu, 21 May 2015 15:28

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