Overview of HIT-SI diagnostic systems

R. G. O'Neill, R. J. Smith, C. Akcay, W. T. Hamp, R. Z. Aboul Hosn, T. R. Jarboe, A. J. Redd, P. E. Sieck, G. L. Sutphin, J. S. Wrobel

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The Helicity Injected Torus with Steady Inductive current drive (HIT-SI) device is a spheromak which uses two inductively driven helicity injectors to provide constant helicity injection. The HIT-SI diagnostic set includes 96 3-D magnetic surface probes, 20 toroidal flux loops, an internal array of three stems of 3-D magnetic probes, a far infrared interferometer, a SPRED diagnostic, two tangentially viewing vacuum ultraviolet (VUV) spectrometers, a bolometer, a Zeff diagnostic, H-alpha detectors, a time integrated CCD camera, and Ion Doppler Spectroscopy (IDS). In addition, a multi point Thomson Scattering system, a microwave interferometer/polarimeter, injector voltage probes, an edge Langmuir probe array, and soft X-ray camera are under development.

Original languageEnglish (US)
Pages (from-to)131-133
Number of pages3
JournalJournal of Fusion Energy
Issue number1-2
StatePublished - Jun 2007
Externally publishedYes


  • Diagnostics
  • Helicity injection
  • Spheromak

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering


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