A HTS scanning magnet and AC operation

K. Hatanaka, J. Nakagawa, M. Fukuda, T. Yorita, T. Saito, Y. Sakemi, T. Kawaguchi, K. Noda

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A scanning magnet using high-temperature superconductor (HTS) wire was designed, built, and tested for its suitability as a beam scanner. After successful cooling tests, the magnet performance was studied using DC and AC currents. With DC current the magnet was successfully operated to generate designed field distributions and effective length. In AC mode, the magnet was operated at frequencies of 30-59 Hz and a temperature of 77 K as well as 10-20 Hz and 20 K. The power losses dissipated in the coils were measured and compared with the model calculations. The observed losses per cycle were independent of the frequency and the scaling law of the transport current was consistent with theoretical predictions for hysteretic losses in HTS wires.

Original languageEnglish
Pages (from-to)16-20
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume616
Issue number1
DOIs
Publication statusPublished - 2010 Apr 21

Keywords

  • AC power loss
  • DC and AC operations
  • High temperature superconducting magnet

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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