The luminosity at the LHC will be a factor of a hundred higher than at
any previous accelerator. This means that the induced activation of the
accelerator and the experiments will be much larger than at any other
collider. While the maintenance of accelerators have in the past been
limited due to induced radiation, the LHC experiments will have to
confront radiation issues that are completly different from those at any
other previous collider experiments. This site contains a collection of information
from the activation studies that have been carried out in the ATLAS collaboration.
A file with all the most important radiation maps is available
here.
The ATLAS activation studies 
