Development of large scaled cryopump for negative ion beam extraction test stand.
نویسندگان
چکیده
منابع مشابه
Uniform Negative Ion Beam Extraction in a Cesium-Seeded Large Negative Ion Source with a Tent Magnetic Filter
For improvement of spatial uniformity of negative ion beams, the external magnetic filter was replaced to a novel tent-shaped magnetic filter in the JAEA 10 ampere negative ion source. The tent filter geometry is based on new findings in surface production of negative ions in high electron temperature plasmas. In order to link the tent filter, the original line-cusp field configuration on the s...
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متن کاملDevelopment of Multi-mega Watt Negative Ion Sources and Accelerators for Neutral Beam Injectors
High energy and high power negative ion sources and accelerators have been developed for neutral beam (NB) injectors of future fusion machines such as International Thermonuclear Experimental Reactor (ITER). Using a 5-stage electrostatic accelerator, negative ion beam has been successfully accelerated up to the energy of 1 MeV, which is the required energy for ITER. Powerful negative ion beams ...
متن کاملInstalling the Vespa H Ion Source Test Stand at Ral
A Penning-type negative hydrogen (H) ion source has been used reliably on the ISIS pulsed spallation neutron and muon facility at the Rutherford Appleton Laboratory (RAL) in the UK for almost 30 years. However a detailed study of the ion source plasma and extraction has never been undertaken. If these properties were known, the beam emittance and losses due to collimation could be reduced, and ...
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ژورنال
عنوان ژورنال: SHINKU
سال: 1989
ISSN: 0559-8516,1880-9413
DOI: 10.3131/jvsj.32.284