  A structure, used as a complex source of X-rays and neutron source, is
designed with the assistance of CST module tool. Particles of -H and electron,
attracted from a plasma source, are designed to be separated by an energy
selector. Soon after the separation, the trajectory and beam quality of -H is
controlled by a special designation of potential barrier and potential well.
And the acceleration of both particles is realized by three pairs of pierce
similar pole to an energy of 150keV to produce x-rays or neutron. With proper
optimization of structure and potential combination, a binocular structure with
beam center distance of 15mm, beam diameter smaller than 3.5mm has been
devised, which giveps a feasible suggestion to produce two rays with one
structure in the same time.
