LINAC2026 - 33rd Linear Accelerator Conference

Beam dynamics and optics matching for the 270-MeV injector linac and transport line of SPS-II

TUPO028

18 Aug 2026, 16:00

2h

1F Exhibition Hall (Daejeon Convention Center)

Poster Presentation MC1.A01: Beam Dynamics, beam simulations, beam transport TUPO - Poster Session

Speakers

Dr Prach Boonpornprasert (Synchrotron Light Research Institute)Dr Thakonwat Chanwattana (Synchrotron Light Research Institute)

Description

The Siam Photon Source II (SPS-II) project is developing a 270-MeV injector linac based on the proven technology of the NanoTerasu facility. This paper presents the beam dynamics simulations and optics matching for the injector linac and the subsequent Low-Energy Beam Transport line (LBT). Particle tracking through the thermionic electron gun, sub-harmonic cavities, and S-band accelerating structures was modeled using PARMELA. Following the linac, the LBT optics were optimized using MAD-X to transport the beam and match the Twiss parameters required at the booster synchrotron injection point. The combined simulation results confirm that the injector linac and LBT provide a well-matched electron beam for injection into the SPS-II booster synchrotron.