IPAC'26 - the 17th International Particle Accelerator Conference

Linear and Nonlinear Effects of Fringe Fields on the Single-Particle Dynamics in the Helium Light Ion Compact Synchrotron

WEP5087

20 May 2026, 16:00

2h

C.I.D

Poster Presentation MC5.D03: Calculations of EM fields Theory and Code Developments Poster session

Speaker

Silke Van der Schueren (European Organization for Nuclear Research)

Description

HeLICS (Helium Light-Ion Compact Synchrotron) is a proposed cancer treatment facility developed within the Next Ion Medical Machine Study (NIMMS) at CERN, designed both for clinical treatment with protons and research with helium ions. Consisting of a triangular lattice with six 60 degree combined-function magnets with 30 degree edge angles, this machine challenges the current treatment of fringe fields in beam dynamics simulations. At present, accurate maps for the fringe fields of curved combined-function magnets with edge angles are not available in the literature. This work investigates the linear and non-linear effects of these fringe fields through the framework of resonance driving terms, providing an alternative approach to quantify their influence on single-particle dynamics.