17 juil 09 Hybrid source @ 8GeV: particles distributions after the crystal and after the amorphous
A 8 GeV electrons beam (composed by 1.1e+4 particles) impinge on a <111> oriented tungsten crystal of 1mm thickness.
Particles at the exit of the crystal
For display reason a cut is apply on px and py value (abs(px&&py)<20 MeV/c).
First case a transverse distribution of sigma=1mm is added to the particles transverse distribution
Electrons phase space at the exit of the crystal
Photons phase space at the exit of the crystal
Positrons phase space at the exit of the crystal
Second case a transverse distribution of sigma=2.5mm is added to the particles transverse distribution
Electrons phase space at the exit of the crystal
Photons phase space at the exit of the crystal
Positrons phase space at the exit of the crystal
Particles at the exit of the amorphous
The photons at the exit of the crystal is use to impinge on 8mm amorphous tungsten
(for 2.5mm rms value)
After the amorphous px,py and pz are defined by the following
Photons phase space at the exit of the amorphous
Electrons phase space at the exit of the amorphous
Positrons phase space at the exit of the amorphous
Tags: channeling, hybrid source, positron source
