Radioactivity Induced in a 2.5 GeV Electron Beam Dump

Abstract

The saturation activity of residual nuclei was estimated based on measurements when 2.5 GeV electron beams were totally absorbed in thick Al, Fe, Cu and Pb. A calculation was also made for a beam dump from 0.1 to 10 GeV using the EGS4 and PICA95 Monte Carlo codes. Above 1 GeV, the activity was constant in units of MBq.W-1. The gamma ray dose rates from the targets were calculated using these data.

Induced radioactivity of materials by stray radiation fields at an electron accelerator

“…Unfortunately, such experimental information is still very limited for electron accelerators. A first detailed benchmark study based on an in-beam geometry experiment [8] was discussed in [2]. However, radioactivity in an accelerator environment is often caused by stray radiation which may activate beamline components, cooling water circuits as well as in soil and groundwater.…”