Numerical calculation on a top-hat plasma particle analyzer using a boundary-fitted coordinate system

Tadahiro Shimoda, Shinobu Machida, Naoki Terada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A boundary-fitted coordinate system is applied to numerical calculation on a top-hat plasma particle analyzer to include the effect of tiny serrations on toroidal plates. The calculation of electrostatic potential inside the analyzer showed the validity of replacement of the serrated toroidal plates to virtual flat toroidal plates, since the potential between the serrated toroidal plates was almost flat except for the area near both the serrated plates. Virtual flat toroidal plates equivalent to serrated plates were obtained from the results of an electric field between the serrated toroidal plates whose position was consistent with an ordinary empirical model. However, calculation of the trajectories of numerous protons revealed sensitivity difference between analyzers with serrated toroidal plates and flat toroidal plates. Such difference was reduced by introducing a path of protons whose boundary is identical to the envelopes of serration tips.

Original languageEnglish
Pages (from-to)1178-1183
Number of pages6
JournalIEEE Transactions on Plasma Science
Volume35
Issue number4 III
DOIs
Publication statusPublished - 2007 Aug
Externally publishedYes

Keywords

  • Boundary-fitted coordinate system
  • Instrumental development
  • Numerical calculation
  • Plasma measurement

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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