Injection (SuSe)

Two versions are described which are both able to solve the problem of the injection into the SuSe cyclotron. In the first concept the field disturbances by additional current loops are largely removed. In order to avoid a first harmonic disturbance by the remaining rest a reflection of the elements in the origin is necessary. Progress in the compensation of the field disturbances led to construction of the second version, in which the injection elements are designed similar to coaxial cables and, like these cables, generate no external field except for the small stray fields of the entrance and exit windows for the ion beam. There is no reflection of the elements. The functional principle and the design of such 'channel magnets' are described in the second section. (orig.)