Details

Title

Heat generation by eddy currents in a shell of superconducting bus-bars for SIS100 particle accelerator at FAIR

Journal title

Archives of Electrical Engineering

Yearbook

2017

Numer

No 4 December

Publication authors

Keywords

superconductors ; eddy currents ; electromagnetic heat generation ; particle accelerators

Divisions of PAS

Nauki Techniczne

Description

Abstract: Superconducting magnets in the SIS100 particle accelerator require the supply of liquid helium and electric current. Both are transported with by-pass lines designed at Wrocław University of Technology. Bus-bars used to transfer an electric current between the sections of the accelerator will be encased in a steel shell. Eddy currents are expected to appear in the shell during fast-ramp operation of magnets. Heat generation, which should be limited in any cryogenic system, will appear in the shell. In this work the amount of heat generated is assessed depending on the geometry of an assembly of the bus-bars and the shell. Numerical and analytical calculations are described. It was found that heat generation in the shell is relatively small when compared to other sources present in the accelerator and its value strongly depends on the geometry of the shell. The distribution of eddy currents and generated heat for different geometrical options are presented. Based on the results of the calculations the optimal design is proposed.

Publisher

Polish Academy of Sciences

Date

22.11.2017

Identifier

eISSN: 2300-2506 ; ISSN: 1427-4221

DOI

10.1515/aee-2017-0053

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