Application of precision mechanical engineering techniques to the design of a moderate energy beam transport for the FAA explosive detection system

This paper discusses the application of precision mounting and alignment techniques to a moderate energy beam transport system (MEBT) used on the exit of a 1.75 MeV RFQ. While frequently found in optical systems, techniques such as kinematic mounting, and degree-of-freedom decoupling, are not as widely used for accelerator components. The MEBT consists of one permanent magnet quadrupole, four electro magnet quadrupoles, and one debuncher cavity. Included in the paper are discussions of design and fabrication considerations as well as, installation, alignment and operations experience during the successful implementation on a working accelerator