Electrostatic Accelerators
Paper Title Page
MO1C3 High Voltage Upgrade of the 14UD Tandem Accelerator 1
  • T.B. Tunningley, S.T. Battisson, A. Cooper, J.K. Heighway, D.J. Hinde, C. Kafer, T. Kitchen, P. Linardakis, N.R. Lobanov, C. Notthoff, T. Tempra, B. Tranter, R. Tranter
    Research School of Physics and Engineering, Australian National University, Canberra, Australian Capitol Territory, Australia
  • R.A. Bosch
    UW-Madison/SRC, Madison, Wisconsin, USA
  • J.E. Raatz
    NEC, Middleton, Wisconsin, USA
  The 14UD at the Australian National University’s Heavy Ion Accelerator Facility (HIAF) operated at a maximum voltage of 15.5 MV after the installation of tubes with a compressed geometry in the 1990s. In recent years, the performance of the accelerator has shown a gradual decline to a maximum operation voltage of ~14.5 MV. There are some fundamental factors that limit the high voltage performance, such as SF6 gas pressure, field enhancement due to triple junctions and total voltage effect. In 2019 ANU initiated the feasibility study of available options to upgrade the entire population of supporting posts, acceleration tubes and grading resistors. In this paper we will discuss the preferred technologies and strategies for successful implementation of this development. The chosen design is based on NEC tubes with magnetic electron suppression and minimized steering of ion beam. The new grading resistors mounting options and improved voltage distribution along accelerator column timeline will be discussed.  
slides icon Slides MO1C3 [28.718 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2022-MO1C3  
About • Received ※ 25 May 2022 — Revised ※ 27 June 2022 — Accepted ※ 10 August 2022 — Issue date ※ 19 September 2022
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