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Re: Bear Smear and Cross Sections [message #13869 is a reply to message #13868] Wed, 15 August 2012 18:56 Go to previous messageGo to previous message
Michael Kunkel is currently offline  Michael Kunkel
Messages: 53
Registered: June 2011
continuous participant
From: 129.57.112*
I think I have located the problem

In the code attached previously, there is a section in which reads

for (int i=0;i<36;i++) {
	x_gp_etaval[i]*=0.001; //in GeV 
	x_gp_etaval[i]+=thr;
    }

Which I saw in the elementary plugin. What is this thr? Threshold? Here is what this segment does

0.774 <--Before    After-->       2.25972
0.824 <--Before    After-->       2.30972
0.874 <--Before    After-->       2.35972
0.924 <--Before    After-->       2.40972
0.975 <--Before    After-->       2.46072
1.025 <--Before    After-->       2.51072
1.073 <--Before    After-->       2.55872
1.124 <--Before    After-->       2.60972
1.175 <--Before    After-->       2.66072
1.225 <--Before    After-->       2.71072
1.277 <--Before    After-->       2.76272
1.326 <--Before    After-->       2.81172
1.374 <--Before    After-->       2.85972
1.429 <--Before    After-->       2.91472
1.48 <--Before    After-->       2.96572
1.529 <--Before    After-->       3.01472
1.575 <--Before    After-->       3.06072
1.626 <--Before    After-->       3.11172
1.674 <--Before    After-->       3.15972
1.721 <--Before    After-->       3.20672
1.776 <--Before    After-->       3.26172
1.829 <--Before    After-->       3.31472
1.878 <--Before    After-->       3.36372
1.93 <--Before    After-->       3.41572
1.978 <--Before    After-->       3.46372
2.025 <--Before    After-->       3.51072
2.073 <--Before    After-->       3.55872
2.123 <--Before    After-->       3.60872
2.174 <--Before    After-->       3.65972
2.225 <--Before    After-->       3.71072
2.277 <--Before    After-->       3.76272
2.351 <--Before    After-->       3.83672
2.45 <--Before    After-->       3.93572
2.55 <--Before    After-->       4.03572
2.7 <--Before    After-->       4.18572
2.887 <--Before    After-->       4.37272


The information in which I enter into the TGraph is lab beam energy (starting from threshold) vs. cross total section obtained from eta cross section


Furthermore, the beam profile appears to be dependent on the preheating done. Initially I preheat(100), however if I raise this to preheat(5000) I see the following beam profile.
index.php?t=getfile&id=7088&private=0

Which now makes me very confused.

I think maybe I should just wait for your 2D histogram solution you are working on.

 
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