LINAC2026 - 33rd Linear Accelerator Conference

Study of Beam Mismatch Effects in a 2.5-MeV 200-MHz 4-Vane RFQ for Neutron Generation

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC3.A01: Industrial and medical accelerators Poster Session

Speaker

Masahiro Okamura (Brookhaven National Laboratory)

Description

A beam dynamics study was carried out for a compact proton accelerator system under development for accelerator-driven neutron source applications in Hungary. The accelerator consists of a proton ion source, a low-energy beam transport line, and a 200-MHz 4-vane RFQ linac.
Numerical simulations were performed to evaluate beam transport and acceleration from the ion source extraction region to the upstream section of the neutron production target. Particular attention was paid to the influence of input beam mismatch on RFQ transmission, emittance growth, and beam loss characteristics. The maximum accelerable beam current was also estimated under realistic operating conditions.
In addition, a tolerance study was carried out to evaluate the acceptable operating range for stable accelerator operation. The sensitivity to transverse mismatch and injection parameter deviations was investigated systematically, and the resulting beam quality degradation and generation of off-specification beam components were analyzed quantitatively.