Book/Report

FZJ-2018-03348

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spektrometrische Bestimmung der Ionenspeziesverteilung für Wasserstoff und Deuterium der Multi-Megawatt Ionenquellen (PINI) an den Neutralteilchen-Injektoren NI-1 und NI-2 von Textor

Rotter, H.FZJ* ; Uhlemann, R.FZJ*

1990
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/18802

Report No.: Juel-2402

Abstract: The ion species fractions of hydrogen H$^{+}$, H$_{2}^{+}$, H$_{3}^{+}$ and deuterium D$^{+}$, D$_{2}^{+}$, D$_{3}^{+}$ in the extracted beam of the multi-megawatt ion sources (PINI) of the neutral beam injectors of TEXTOR are determined. The measurements are obtained from two grating spectrometers of 0.5 m focal length with a light guiding system of 50 mm aperture using the Doppler shifted H$_{\alpha}$ /D$_{\alpha}$, - light of the accelerated beam particles. The spectral resolution obtained is 0.76 $\mathring{A}$ with a 50 $\mu$m entrance slit. The ion source is a bucket source (modified JET PINI) with a multipole magnetic field in checkerboard arrangement. The species fraction measurements are performed as function of beam current, ion source pressure and beam pulse length. The results for hydrogen and deuterium at particle energies of 20 - 55 keV and beam currents of 13 - 87 A show no significant difference between neutral injector I and II. For 55 keV and a beam current of 87 A in hydrogen and 63 A in deuterium a species mix of 67.2 : 24.5 : 8.4 % (H$^{+}$ : H$_{2}^{+}$ : H$_{3}^{+}$) and of 69.1 : 23.8 : 7.1 % (D$^{+}$ : D$_{2}^{+}$ : D$_{3}^{+}$) is obtained.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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