Modified split structure particle accelerators

A method of manufacturing a particle accelerator, the method comprising:

• providing a first waveguide structure comprising a first plurality of recesses disposed along a first longitudinal axis of the first waveguide structure, wherein the first waveguide structure comprises a first bonding surface;
• providing a second waveguide structure comprising a second plurality of recesses disposed along a second longitudinal axis of the second waveguide structure, wherein the second waveguide structure comprises a second bonding surface;
• aligning the first plurality of recesses with the second plurality of recesses;
• and
• joining the first waveguide structure to the second waveguide structure such that the first and second plurality of recesses form a plurality of accelerating cells of a joint structure;
• wherein each of the plurality of accelerating cells has a central aperture configured to allow a beam of charged particles to travel therethrough along a longitudinal axis extending through central apertures of each of the plurality of accelerating cells.