Scenarios For the building of muon colliders or storage rings suitable for
the generation of robust neutrino beams call for the generation of a prodig
ious quantity of pions. These pions are then conducted into a decay channel
where the resulting muon decay products can be collected for cooling and s
ubsequent acceleration. Central to this concept is the design and construct
ion of a target which will be highly efficient in producing pions of both s
igns while mitigating the absorption of these pions before they decay. This
design effort is being facilitated by using two computer codes FLUKA and M
ARS. We present comparisons of the two computer codes acid also present a c
omparison of these codes with available data. (C) 2000 Published by Elsevie
r Science B.V. All rights reserved.