From klchan@fnal.gov Mon Nov  4 21:23:33 2002
Date: Tue, 22 Oct 2002 18:07:45 -0500
From: Leo Chan <klchan@fnal.gov>
To: Andrew White <awhite@fnal.gov>
Cc: Leslie Groer <groer@fnal.gov>, Marek Zielinski <marek@fnal.gov>
Subject: Re: Muons and ICD

Hi Andy,

Here are the plots I showed before for GEANT muon energy in the ICD.
Please see if they are useful for you. These are MC 10 GeV energy (
not Pt) muons with fixed vertex at (0,0,0), eta range 1.1 to 1.4 and 
uniform phi. They are simulated with D0GSTAR in release version 
p11.03.00 back in March. There is no noise, zero-supression, min-bias,
or bls. I will explain the plots here:

icde.ps shows the total ICD energy for all the 2000 events.

icde1.ps shows the energy in each particular ICD eta ring (e.g. ICD 1 
is for ieta = 12, summed over all phi) for those muons with etas that 
are actually covered by that eta ring.

icde2.ps shows the total ICD energy for muons with etas in those
particular ranges mentioned under each plot.

If there is any question about the plots please let me know.

cheers,
Leo

On Fri, 18 Oct 2002, Leslie Groer wrote:

> Hi Andy
> 
> In conversation with Vishnu about the ICD weights he suggested looking at
> the Geant output of muons in the ICD (i.e. live energy before
> non-linearity and packing into ADC) and compare this to the data, which
> should give us a good approximation of the energy difference.  Comparing
> the MC energy in Geant to that after reco also tells us something?
> 
> Leo may have some plots from the past on this?
> 
> Leslie
> 
> 
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> 




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