Formation of large negative deuterium ion beams at ELISE
نویسندگان
چکیده
منابع مشابه
Optical emission spectroscopy at the large RF driven negative ion test facility ELISE: instrumental setup and first results.
One of the main topics to be investigated at the recently launched large (A(source) = 1.0 × 0.9 m(2)) ITER relevant RF driven negative ion test facility ELISE (Extraction from a Large Ion Source Experiment) is the connection between the homogeneity of the plasma parameters close to the extraction system and the homogeneity of the extracted negative hydrogen ion beam. While several diagnostics t...
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The large-scale RF-driven ion source of the test facility ELISE is aimed to deliver an accelerated ion current of 20 A D ̅ (23 A H ̅) with an extracted electron-to-ion ratio below one for up to one hour. Since the first plasma pulses for 20 s in volume operation in Early 2013, followed by caesiation of the ion source, substantial progress has been achieved in extending the pulse length and the RF...
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Managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. Abstract Investigations have been conducted to determine the feasibility of using collisional cooling for reducing the energy spreads and, consequently, the emittances of negative-ion beams. We have designed a gas-filled RFquadrupole ion cooler equipped with provisions for retarding energetic nega...
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To meet the requirements of the four operating and one start-up scenarios foreseen in the International Tokamak Experimental Reactor (ITER) a flexible heating mix will be required, which has to include a reliable contribution from neutral beams. The current baseline of ITER foresees 2 Heating Neutral Beam (HNB) systems based on negative ion technology, each operating at 1 MeV 40 A D ions, and e...
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Fast ions in W7-X will be produced either by neutral beam injection (NBI) or by ion-cyclotron resonant heating (ICRH). The latter presents the advantage of depositing power locally and does not suffer from core accessibility issues (Drevlak et al 2014 Nucl. Fusion 54 073002). This work assesses the possibility of using ICRH as a fast ion source in W7-X relevant conditions. The SCENIC package is...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2019
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.5127832