Traditional accelerator designs utilize linear focusing elements (quadrupoles, solenoids) to yield stable particle motion. Concurrently, high intensity rms-matched non-uniform beams are intrinsically mismatched with linear focusing structures. This inconsistency results in space charge induced beam emittance growth and halo formation. However, periodic structures of focusing-defocusing lenses with combined quadrupole and duodecapole field components provide an effective way to suppress halo formation [1]. This paper summarizes research activity aimed at optimizing the quadrupole-duodecapole channel for halo suppression. The performed analysis allows for matching of a realistic beam with the internal structure of the focusing field. Additionally, beam dynamics studies with a suppressed halo are presented and discussed.
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