I. Cnanges in description of FN1G and FN1P banks
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Main Calorimeter:
Par2 Sigma_Gaussian_noise(MC) 0.5 0.5 0.5 0.5
Par5 0.0 0.0 0.008 0.0328
Par6 1.2 5.0 1.256 0.6862
Par7 0.0 0.0 1.223 10.2870
Par8 1.2 5.0 0.0055 -0.0006
Preshower:
Par2 Sigma_Gaussian_noise(MC) 0.3 0.3
Par5 -1.4596 0.2217
Par6 1.4194 -0.2117
Par7 -1.4596 0.2217
Par8 1.4194 -0.2117
II.Useful hints and MC development in 2004
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It is no sense to compare directly the positions of reconstructed
clusters in FNC and moreover expect the agreement for X(Y)cl
distributions in DATA and MC.
The position of FNC is different 'apriory' in reality and MC in
the H1 coordinate system where the cluster coordinates are
reconstructed too.
Besides, the local tilt of proton beam will change the position of
maximum of X(Y)cl distribution even in the range of the same
acceptance.
For better clarifying see/take plots mentioned below in dir.
~zhokin/h1/fnc/old :
1) As introduction:
2.ps
2) In year 2004 the y-position of main FNC (m) and Preshower (p) was
increased by 3cm and z-coordinate was reduced by 84.75cm in MC to fit
better real calorimeter position:
10.ps - coord.eps
3) The tilt seen in DATA have to be taken into account in MC.
To define the value of tilt in DATA the D/MC comparison of theta and
phi distributions of particle w.r.t. beam direction can be used.
Namely these variables are physical variables and have sense for
comparison between DATA and MC with correct tilt:
11.ps - 12.ps - 13.ps - 14.ps
4) DATA/MC samples, neutron and DIS selection:
3.ps
5) Tuning of energy profiles in MC for FNC:
4.ps - 5.ps - 6.ps - 7.ps - 8.ps - 9.ps
III. MC development in 2005 - Shower libraries.
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All information can be found in H1-IN-620(07/2005)