Calculation of antiproton yields for the fermilab antiproton source

Antiproton production for Tevatron

“…beam spot size in mm, A = Ax = Ay -acceptance of Pbar Source in pi mm mrad. Fig.B shows antiproton momentum spectra in 120 GeV proton-tungsten collision integrated over two angular intervals as predicted by our model, by phenomenological model (11], which was the base for the Pbar Design Report, and by the multi-chain fragmentation model (12]. The disagrement of factor of 2 or 3 was mentioned first in [1,2].…”

Calculation of beam sweeping effect for the Fermilab antiproton source

“…Therefore, in the first place, the pbar yield could be increased merely by increasing number of protons in a bunch. However, it is believed that currently the target is very close to its high temperature limits: melting and cracking due to shock waves creation [2,3].…”

The CERN antiproton collider programme: accelerators and accumulation rings

“…Differential yields have been calculated and measured for various materials and momenta [14,15] and were found to rise steeply with proton momentum, before beginning to level off at about 100 GeV/c (e.g. for tungsten, one has 0.013 sterad -1 (GeV/c) -1 at 26 GeV/c (CERN), and 0.25 at 120 GeV/c (FNAL production beam [16]).…”

“…3 p p ≈ GeV/c. To calculate the conversion efficiency one uses the "differential yield" [14,15], i.e. the differential cross section for antiproton production divided by the cross section for inelastic scattering…”