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EMC resolution [message #15567]

Fri, 11 October 2013 14:05

binsong
Messages: 10
Registered: December 2011

occasional visitor

From: *in2p3.fr

hi,
i find some problems with the EMC energy resolution. Maybe there are some bugs.

I do the simulations for electron and photon with box generator with the latest trunk at both barrel region (80deg--100deg) and forward region (12deg--20deg).

i get the reconstructed energy(E_rec) by using GetEmcRawEnergy(),

then i plot (E_mc-E_rec)/E_mc for each simulation.

but i find the resolution sigma/E much smaller then the result in TDR:

electron_barrel: 1.18%
electron_forward: 1.58%
photon_barrel: 1.07%
photon_forward: 1.39%

and in TDR, the resolution for photon at 1GeV is more than 2%.

you can find all the four plots in attachment.

does someone know this problem?

Binsong

Attachment: electron_barrel_1GeV.eps
(Size: 12.33KB, Downloaded 423 times)
Attachment: electron_forward_1GeV.eps
(Size: 13.25KB, Downloaded 392 times)
Attachment: photon_barrel_1GeV.eps
(Size: 12.44KB, Downloaded 390 times)
Attachment: photon_forward_1GeV.eps
(Size: 12.37KB, Downloaded 377 times)

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[Message index]

		EMC resolution By: binsong on Fri, 11 October 2013 14:05
		Re: EMC resolution By: Dima Melnychuk on Mon, 14 October 2013 14:47
		Re: EMC resolution By: StefanoSpataro on Mon, 14 October 2013 17:29
		Re: EMC resolution By: binsong on Wed, 30 October 2013 10:50
		Re: EMC resolution By: StefanoSpataro on Wed, 30 October 2013 14:57
		Re: EMC resolution By: Dima Melnychuk on Wed, 30 October 2013 15:23
		Re: EMC resolution By: Ronald Kunne on Wed, 06 November 2013 11:13
		Re: EMC resolution By: Dima Melnychuk on Wed, 06 November 2013 12:35
		Re: EMC resolution By: StefanoSpataro on Wed, 06 November 2013 17:11
		Re: EMC resolution By: binsong on Fri, 15 November 2013 15:10
		Re: EMC resolution By: Dima Melnychuk on Fri, 15 November 2013 15:24
		Re: EMC resolution By: binsong on Fri, 15 November 2013 15:30
		Re: EMC resolution By: StefanoSpataro on Fri, 15 November 2013 16:23
		Re: EMC resolution By: binsong on Fri, 15 November 2013 16:30
		Re: EMC resolution By: StefanoSpataro on Fri, 15 November 2013 16:35
		Re: EMC resolution By: Dima Melnychuk on Fri, 15 November 2013 15:39
		Re: EMC resolution By: binsong on Fri, 15 November 2013 15:49
		Re: EMC resolution By: binsong on Thu, 13 February 2014 15:16
		Re: EMC resolution By: binsong on Thu, 13 February 2014 15:17

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