Technical design of an axial injection low-energy carbon beam line

Abstract

Ongoing research and development efforts are being conducted at Sungkyunkwan University-Korea with the objective of creating an Atomic Mass Spectrometer (AMS) cyclotron that presents a more compact and cost-effective alternative to the conventional Tandem AMS system. The construction of cyclotrons frequently encounters difficulties, mostly arising from instabilities and substantial losses of ion beams, particularly during the injection phase that usually depends on an axial injection mechanism. In this paper, we undertake an in-depth investigation into the comprehensive design exploration of a low-energy carbon ion beam line. The optimization processes were done using Trace3D, TOSCA, and OpticExpert codes. The TOSCA software, in particular, enabled the use of three-dimensional simulations related to the complicated behavior of ion beams. The presented paper offers an in-depth examination of the beam line, illustrating the engineering elements of essential optical parts, such as quadrupoles and dipoles. Following the production process, all of the beam line parts were subjected to extensive testing. The final results, including magnetic field measurements and field gradients, showed an excellent match with our physical models. At the same time, a thermal study of the air-cooled quadrupole coils was carried out using the ANSYS APDL program. The construction of beam line has been done. An analysis of beam measurements will be carried out and subsequently compared to the calculated models. The objective of this comparison analysis is to ascertain the most optimal design method, with a focus on achieving efficiency and reliability in the final beam line system.