KONUS Beam Dynamics Design of Uranium DTL for HIAF

TL;DR

This paper presents the KONUS beam dynamics design for a uranium drift tube linac (DTL) in the HIAF project, optimizing beam transmission and minimizing losses while considering CW operation constraints.

Contribution

The paper introduces a KONUS-based design for uranium DTL with specific parameters, achieving high transmission efficiency and optimized beam quality for the HIAF project.

Findings

Transmission efficiency of 94.95% achieved.

Average acceleration gradient of 2.48MV/m designed for CW operation.

Maximum axial field of 10.2MV/m within breakdown limits.

Abstract

KONUS beam dynamics design of uranium DTL with LORASR code is presented. The 238U34+ beam, whose current is 5.0emA, is accelerated from injection energy of 0.35MeV/u to output energy of 1.3MeV/u by IH-DTL operated at 81.25MHz in HIAF project at IMP of CAS. It achieves transmission efficiency of 94.95% with the cavity length 267.8cm. Optimization aims are the reduction of emittance growth, of beam loss and of project costs. Because of the requirements of CW mode operation,the designed average acceleration gradient is about 2.48MV/m. Maximum axial filed is 10.2MV/m, meanwhile Kilpatrick breakdown field is 10.56MV/m at 81.25MHz.