geant321 calculation
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target + beam  - this is a full glass cell	
Ne=10**9,E=11.0 GeV electrons, used DRAM=1000 ( amplified hadronic x section)
 on 40cm 3He,10atm (1.335e-3 g/cm3), in glass tube with 0.012cm thick SiO2
entrance and exit windows (2.77 g/cm3).
total thickness 0.0534 g/cm2 3He + 0.06648 g/cm2 SiO2

pi+ :  pi+1g-3he-10atm-40cm.dat.gz
pi- :  pi-1g-3he-10atm-40cm.dat.gz
 2d spectrum, p vs theta, format in paw++ vector(Nx,Ny)=vector(550,120)
 0<p<11000. MeV/c(550 channels),
 0<theta<60 deg (120 channels)
 
pi+ : projected spectrum onto momentum axis for 7<theta<25deg
pip1g3he10atm40cm7_25.dat.gz    550 channels from 0. to 11000. MeV/c

pi- : projected spectrum onto momentum axis for 7<theta<25deg
pim1g3he10atm40cm7_25.dat.gz    550 channels from 0. to 11000. MeV/c
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target + beam  - this is an empty glass cell
Ne=10**9,E=11.0 GeV electrons, used DRAM=1000 ( amplified hadronic x section)
 on 40cm 3He, 0.001atm (~ 0 g/cm3), in glass tube with 0.012cm thick SiO2
entrance and exit windows (2.77 g/cm3)-> 0.06648 g/cm2 SiO2.

pi+ : pip1g-glass.dat.gz
pi- : pim1g-glass.dat.gz
 2d spectrum, p vs theta, format in paw++ vector(Nx,Ny)=vector(550,120)
 0<p<11000. MeV/c(550 channels),
 0<theta<60 deg (120 channels)

pi+ : projected spectrum onto momentum axis for 7<theta<25deg
pipglass-7-25.dat.gz  550 channels from 0. to 11000. MeV/c

pi- : projected spectrum onto momentum axis for 7<theta<25deg
pimglass-7-25.dat.gz  550 channels from 0. to 11000. MeV/c
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