Experiments on the multiampere negative ion source in National Institute for Fusion Science
- 1 April 1992
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 63 (4) , 2683-2685
- https://doi.org/10.1063/1.1142822
Abstract
The multiampere negative hydrogen ion source has been developed in National Institute for Fusion Science (NIFS). The ion source is a volume‐production type multicusp one with an extraction area of 25×25 cm2. It is found that high density negative hydrogen ions of more than 1 × 1012 cm−3 are produced in the center of the arc chamber with a double magnetic filter configuration. A supply of a small amount of cesium vapor into the arc chamber has greatly enhanced the H− ion current and reduced the operation pressure. The H− ion current of 3.3 A has been extracted from a Cs‐seeded plasma at the pressure of 0.9 Pa.Keywords
This publication has 4 references indexed in Scilit:
- Development of the KEK volume H− ion sourceNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991
- A 14 cm×36 cm volume negative ion source producing multi-ampere H− ion beamsReview of Scientific Instruments, 1990
- Optimization of H− production from a small multicusp ion sourceReview of Scientific Instruments, 1989
- Extraction of H− and D− ions from a large magnetic multipole sourceReview of Scientific Instruments, 1987