TITLE

Compact retarding field energy analyzer for the tokamak ISTTOK boundary plasma

AUTHOR(S)
Nedzelskiy, I. S.; Silva, C.; Figueiredo, H.; Fernandes, H.; Varandas, C. A. F.
PUB. DATE
October 2006
SOURCE
Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10E729
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The retarding field energy analyzer (RFEA) remains the more reliable diagnostic to measure the ion temperature in the boundary plasmas of magnetic fusion devices. A compact, simple design and inexpensive RFEA has been developed for investigations on the tokamak ISTTOK. It consists of a stainless steel pinhole (with a diameter of 0.6 mm), three fine nickel grids with a separation of 1 mm, and a collector, all insulated by mica. All the components are placed inside a boron nitride housing with dimensions of 14×14×23 mm3. The RFEA has been tested in both ion and electron modes. The conditions of the RFEA operation are discussed, and preliminary measurements of the ion and electron temperature profiles presented.
ACCESSION #
23073078

 

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