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Re: Problems with photon reconstruction in pandaroot [message #15458 is a reply to message #15449]

Sat, 07 September 2013 00:23

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: 2.235.190*

I have tried with my trunk 21608.
If i use the macro as it is, to run 100 events it takes a lot of time, something like 7 minutes.
Using an energy selector from 20 MeV, as suggested by Klaus:

theAnalysis->FillList(gammas, "Neutral");
double E_min = 0.02; // your energy threshold
RhoEnergyParticleSelector *GamEnSel=new RhoEnergyParticleSelector("gam",E_min+50.,100.);
gammas.Select(GamEnSel);

less than 20 seconds. It removes a lot of low momentum background.

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[Message index]

		[FIXED] Problems with photon reconstruction in pandaroot By: Elisabetta Prencipe (2) on Thu, 05 September 2013 10:40
		Re: Problems with photon reconstruction in pandaroot By: Klaus Götzen on Thu, 05 September 2013 11:19
		Re: Problems with photon reconstruction in pandaroot By: Klaus Götzen on Thu, 05 September 2013 11:26
		Re: Problems with photon reconstruction in pandaroot By: Elisabetta Prencipe (2) on Thu, 05 September 2013 11:43
		Re: Problems with photon reconstruction in pandaroot By: Elisabetta Prencipe (2) on Thu, 05 September 2013 11:49
		Re: Problems with photon reconstruction in pandaroot By: Klaus Götzen on Thu, 05 September 2013 12:19
		Re: Problems with photon reconstruction in pandaroot By: StefanoSpataro on Thu, 05 September 2013 13:13
		Re: Problems with photon reconstruction in pandaroot By: Klaus Götzen on Thu, 05 September 2013 16:29
		Re: Problems with photon reconstruction in pandaroot By: Elisabetta Prencipe (2) on Thu, 05 September 2013 16:54
		Re: Problems with photon reconstruction in pandaroot By: StefanoSpataro on Sat, 07 September 2013 00:23

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