Study of a Uniform Steel Beam Stop at 28 GeV

Preliminary data for the distribution of the hadron cascade and of muons in a 36 ft long steel beam stop are presented. The strongly interacting flux was mapped to an axial depth of 16 ft using Carbon-11 activation. The muon flux was detected at depths greater than 10 ft by a coincidence technique where the counters were separated by from 2 to 12 ft of steel.