BEAM INDUCED RADIATION PROBLEMS AND CURES

ISIS, the high intensity pulsed neutron source at the Rutherford Appleton Laboratory, operates with a mean proton beam power in excess of 160 kW at a beam energy of 800 MeV. Beam loss is controlled to prevent damage to machine components and localise high levels of induced radioactivity. A description is given of how ISIS is operated so as to minimise the induced activity. Details are provided of the procedures and formalised methods of control that enable the manual handling of activated machine components within limited, collective personnel doses