Author:
Vadimov N.A.,Sarancha G.A.,Drabinskiy M.A.,Melnikov A.V.,Eliseev L.G.,Khabanov Ph.O.,Kharchev N.K.,Komarov O.D.
Abstract
D-shaped tokamak T-15MD is nowunder construction in the NRC "Kurchatov Institute". Heavy ion beam probing (HIBP) is an important part of T-15MD diagnostic system. Calculations of the probing ions trajectories show that the beam will pass through the plasma about 1.0…1.5 m, which can lead to its significant attenuation. HIBP operation requires obtaininga high-current long-focus probing beam of Tl+ ions (I = 200…400 μA, f = 4…6 m, d ≤ 10 mm). A high voltage (300 keV) test-benchto test such beams is being created now. Numerical modeling shows the possibility of a beam formation with a current of 300 μA and diameter 12 mm at 6 m from the ion emitter.
Publisher
Problems of Atomic Science and Technology
Reference18 articles.
1. A.V. Melnikov et al. Physical Program and Diagnostics of the T-15 Upgrade Tokamak // Fusion Engineering and Design. 2015, v. 96, 97, p. 306-310.
2. Yu.N. Dnestrovskij et al. Development of heavy ion beam probe diagnostics // IEEE Transaction Plasma Science. 1994, v. 22, p. 310-331.ISSN 1562-6016.
3. A.V. Melnikov et al. Heavy ion beam probing – diagnostics to study potential and turbulence in toroidal plasmas // Nuclear Fusion. 2017, v. 57, p. 072004.
4. A.V. Melnikov. Applied and fundamental aspects of fusion science // Nature Physics. 2016, v. 12, p. 386-390.
5. A.V. Melnikov. Electric Potential in Toroidal Plasmas // Springer Nature Switzerland AG. 2019, p. 240.