The main purpose of the Divertor Tokamak Test (DTT) facility is to study alternative solutions to mitigate the issue of power exhaust under integrated physics and technical conditions relevant for an International Thermonuclear Experimental Reactor (ITER) and a DEMOnstration Power Plant (DEMO). DTT will be equipped with a 510-keV, 40-A neutral beam injector (NBI) based on negative deuterium ion particles, designed to yield about 10 MW of neutral power to the DTT tokamak. The strongly triangular shape of the beam and the ITER-like multifocusing strategy required a different approach than more conventional solutions in designing the electrostatic plates in order to guarantee the desired beam deflection. This article describes the performance optimization process carried out for the injector of the DTT NBI system. In particular, a new electrostatic design concept for the accelerator grids has been implemented, the hyperlens grids (HGs): additional grids with a lens-like profile, imparting to each separate beamlet the necessary exit deflection without shape deformation.
Performance Optimization of the Electrostatic Accelerator for DTT Neutral Beam Injector
Veronese F.; Agostinetti P.; Murari A.; Pepato A.
Related products
-
PCCP. Physical chemistry chemical physics (Print) 23 (29), pp. 15475 - 15479 Year: 2021 DOI: 10.1039/d1cp01976g
Reconciling experimental and theoretical vibrational deactivation in low-energy O + N2 collisions
Hong, Q., Bartolomei, M., Esposito, F., Sun, Q., Pirani, F.
-
The astrophysical journal. Letters (Print) 912 (2), pp. L21-1 - L21-8 Year: 2021 DOI: 10.3847/2041-8213/abf7d1
Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe-Solar Orbiter Radial Alignment
Telloni, Daniele; Sorriso-Valvo, Luca; Woodham, Lloyd D.; Panasenco, Olga; Velli, Marco; Carbone, Francesco; Zank, Gary P.; Bruno, Roberto; Perrone, Denise; Nakanotani, Masaru; Shi, Chen; D’Amicis, Raffaella; De Marco, Rossana; Jagarlamudi, Vamsee K.; Steinvall, Konrad; Marino, Raffaele; Adhikari, Laxman; Zhao, Lingling; Liang, Haoming; Tenerani, Anna; Laker, Ronan; Horbury, Timothy S.; Bale, Stuart D.; Pulupa, Marc; Malaspina, David M.; Macdowall, Robert J.; Goetz, Keith; De Wit, Thierry Dudok; Harvey, Peter R.; Kasper, Justin C.; Korreck, Kelly E.; Larson, Davin; Case, Anthony W.; Stevens, Michael L.; Whittlesey, Phyllis; Livi, Roberto; Owen, Christopher J.; Livi, Stefano; Louarn, Philippe; Antonucci, Ester; Romoli, Marco; O’Brien, Helen; Evans, Vincent; Angelini, Virginia
-
Journal of plasma physics (Print) 87 (1), pp. 825870101-1 - 825870101-20 Year: 2021 DOI: 10.1017/S0022377820001567
Local and global properties of energy transfer in models of plasma turbulence
Vasconez, Christian L.; Perrone, D.; Marino, R.; Laveder, D.; Valentini, F.; Servidio, S.; Mininni, P.; Sorriso-Valvo, L.
English
Italiano