24 . 



The simultaneous construction of both projects, although unlikely, would not 

 be unreasonable from the physics point of view, since they cover two different energy 

 regions which the SSC would have difficulties to cover by itself. When the technical 

 and financial possibilities will have become clearer, it is hoped that some plans of in- 

 ternational collaboration will emerge. Obviously, an early completion of a powerful 

 machine in the U.S.A., such as the SSC, would be in the interest of all High En- 

 ergy physicists including the European community. It is reasonable to assume that 

 the Europeans would participate in the exploitation by providing equipment and 

 instrumentation according to step 3 if not some help in the construction according 

 to step 4. 



What about step 5, the truly international laboratorj-? It would avoid the 

 "disfavored citizen" syndrome since the participating regions take part en equal 

 terms. A world laboratory including even Soviet participation was proposed and 

 discussed since the inception of CERN. I myself, among many others, was a pro- 

 moter of this idea. Experience suggests, however, that the political, managerial and 

 financial problems of a world machine may be cumbersome and risky. At this stage 

 High Euerg}- Physics is probably still better served by national or regional facilities, 

 preferably constructed with active participation of other regions according to step 

 4. Still we should not abandon the thought of a world machine. Comes a time when 

 the cost and efi'ort of the next accelerator is so high that there may be no other way 

 but world cooperation. Let us not forget the human significance of such a future 

 venture. It may ser\-e as a symbol of better relations between different parts of 



