Beam delivery systems for linac-based proton therapy

TL;DR

This paper introduces a novel gantry design for proton therapy utilizing adiabatic transition and fixed-field magnets, optimizing size, weight, and cost for improved clinical application.

Contribution

It presents a new gantry design based on adiabatic transition with fixed-field magnets, enhancing size, weight, and cost efficiency for proton therapy.

Findings

Optimized lattice and transition sections for size reduction.

Achieved full energy range matching with reduced gantry weight.

Validated optical performance through beam tracking simulations.

Abstract

This report presents a design of a gantry for proton therapy based on the concept of adiabatic transition. The use of fixed-field alternating gradient magnets allows a large momentum acceptance and supports fast energy modulation. The optical performance of the gantry has been analysed using a beam tracking code. Several optimisations of the lattice and transition sections have been investigated to reduce size and ensure applicability to pencil beam scanning. Matching of the full energy range results in an increase in the size of the gantry, but reduces the weight and cost significantly compared to those that pertain to facilities in operation.