Geant3 (How to)

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Geant3 Simulation

The simulation package can be found here (Where should I put it?)

The package needs to run on ifarm1101

Simple kumac with visualization

• >./comg_inter.exe
• >exe gmag_test

How to get analyzing power

• >paw (workstation 3)
• >exe azz

• This produces an output called azz.dat

azz.dat

Q1    Q2    Q3    Q4   Dipole theta(RMS)  phi(RMS)  #sim  singles   COIN      Azz    Azz err  singles(mean left arm)  Holding Field 

-1.19  1.75  0.51  1.73   6.74    9.53       0.33    100000.  64193.  59208.  0.7460    0.411      90.210                  3.00

-1.19  1.75  0.51  1.73   6.74    9.37       0.33    100000.  63526.  58107.  0.7472    0.415      90.112                  3.00

-1.19  1.75  0.51  1.73   6.74    8.43       0.33    100000.  59737.  49799.  0.7530    0.448      89.621                  3.00

How to get Levchuk correction

The simulation needs to be run three times. One for scattering off of each shell M (free e-), L and K.

• >paw (workstation 3)
• >call sim_levch.f(N1,N2,N3,K1,K2,K3)

Where N1,N2,N3 are the number of simulated events and K1,K2,K3 and the number of coincidence from the simulation for the M(free e-), L, and K shells respectively.