CENTRE DE PHYSIQUE ELECTRONIQUE ET CORPUSCULAIRE ORSAY (FRANCE)
The experimental results on the tubes equipped with 4 interdigital lines mounted in parallel were not satisfactory. These negative results were thought to be due to the existence of several parasitic modes. Efforts were then switched to the following problems 1 complementary tests on interdigital lines, essentially centered on propagation and the parasitic modes so as to understand better the behaviour of the circuits mounted in parallel, and 2 study of a new water cooled tube. A linear tube was also studied, based on the use of a new gun type.