Work and programmes connected with shielding problems in Italy

The work that has been done on shielding and that is still going on can be briefly described under two main headings: the experimental part, which deals with the measurement of neutron and gamma penetration in laminar shields, and the part concerned with theoretical analysis and development of reliable shielding design methods. Particular reference is made to the work being done under the Euratom-FIAT-Ansaldo naval contract, with the participation of CNEN. The work performed has served to establish greater confidence in certain methods of calculation and to show the limits to which the solution of certain problems are subject. The work in which we are engaged deals with problems of neutron penetration in laminar water-lead shields and also with the development of methods of calculation, the improvement of measurement techniques and the evaluation of experimental errors. This summary makes no claim to being a complete picture of the research on shielding which is being conducted in Italy