Title :
Beam dynamics studies of four-gap low-beta superconducting resonators
Author :
Nolen, J.A. ; Joh, K.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
The four-gap superconducting resonators which have been developed at Argonne for use in the low-beta positive ion-injector for ATLAS have potential applications for ions with velocities less than 0.007c and q/m less than 0.1. It was previously observed that at low velocities these structures can be focussing in both longitudinal and transverse phase spaces due to an inherent alternating-phase-focussing property. Studies are underway to determine the optimum combination of multi-gap structures and solenoids at low velocity and low q/m. We present the results of acceptance studies for the first three resonators at the front of the positive-ion injector linac, with and without the focussing solenoids. These studies include the effects of higher-order distortions in longitudinal and transverse phase spaces since minimising each aberrations is very important for most nuclear physics applications of such accelerators
Keywords :
cavity resonators; particle beam diagnostics; ATLAS; focussing solenoids; four-gap low-beta superconducting resonators; higher-order distortions; inherent alternating-phase-focussing property; longitudinal phase spaces; low-beta positive ion-injector; positive-ion injector linac; transverse phase spaces; Acceleration; Argon; Government; Ion accelerators; Laboratories; Linear particle accelerator; Niobium; Nuclear physics; Phase distortion; Solenoids;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309006