Listopad A, Coenen J, Davydenko V, Ivanov A, Mishagin V, Savkin V, Schweer B, Shulzhenko G, Uhlemann R. Use of the focusing multi-slit ion optical system at RUssian Diagnostic Injector (RUDI).
THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012;
83:02B707. [PMID:
22380312 DOI:
10.1063/1.3669794]
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Abstract
The upgrade of the diagnostic neutral beam injector RUDI in 2010 was performed to increase the beam density at the focal plane in accordance with the requirements of charge-exchange recombination spectroscopy diagnostics. A new focusing ion-optical system (IOS) with slit beamlets and an enlarged aperture was optimized for 50% higher nominal beam current and reduced angular divergence with respect to the previous multi-aperture IOS version. The upgraded injector provides the beam current up to 3 A, the measured beam divergence in the direction along the slits is 0.35°. Additionally, the plasma generator was modified to extend the beam pulse to 8 s.
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