PARTICLE FLUX CALCULATION-III

1
PARTICLE FLUX CALCULATION-III

• Sergei Striganov
• Fermilab
• May 24, 2006

2
Detector positions and particle fluxes per pulse
(3 1013 protons).
neutrons (Egt100 keV)
charged hadrons (Egt200 keV)
3
Detector positions and particle fluxes per pulse
(3 1013 protons).
electrons (Egt200 keV)
gammas (Egt200 keV)
4
Energy spectra ( 0 degree detector). Blue lines
all particles, red lines- particles created in
attenuator.
5
Energy spectra ( 6.7 degree detector). Blue lines
all particles, red lines- particles created in
attenuator.
6
Energy spectra ( 11.5 degree detector). Blue
lines all particles, red lines- particles
created in attenuator.
7
Energy spectra ( 45 degree detector). Blue lines
all particles, red lines- particles created in
attenuator.
8
Particle fluxes per pulse (3 1013 protons).
Charged pions (pgt5GeV/c)
Electrons (pgt18 MeV/c)
9
Neutral particles background. Particle fluxes per
pulse (3 1013 protons).
gammas (Egt200 keV)
neutrons (Egt100 keV)
10
Shielding efficiency.Electron flux (pgt18MeV/c)
per pulse (3 1013 protons).
4 cm Pb shield
1cm Pb shield
11
Energy spectra
12
Electrons and charged pions in cherenkov detector
13
Conclusions

• To estimate signal/background ratio in
  scintillator detectors we need to specify
  efficiency of detector as function of energy and
  particle type
• It is possible to obtain reasonable
  signal/background ratio in cherenkov detector
  using lead shielding. More detailed calculations
  (including simulation of cherenkov light?) is
  needed.