Large Diagnostic Neutral Beam Injectors of Budker Institute of Nuclear Physics Budker Institute of Nuclear Physics, , Novosibirsk, Russia V.Davydenko

Outline Outline RUDI DNBI W-7X DNBI H - sources at BINP

Diagnostic neutral beam injector RUDI

RUDI at TCV

1- soft metal case, 2 - gas feeding tube, 3 - inner magnetic shield, 4 - trigger, 5 - ceramic wall, 6 - RF coil, 7 - pull stud (insulator), 8 - ceramic spacers, 9 – beam duct, 10 - water inlet manifold, 11 - grounded grid, 12 - accelerating grid, 13 - extracting grid, 14 - plasma grid, 15 - magnets, 16 - co-axial feedthrough E b = 50–53 keV I b = 2–2.8 A T= 2–10 s δα ≈ 0.5° F= 4 m RUDI ion source

Geometrical beam focusing

RUDI grid set

CVI 5290 Ǻ line emission intensity at TEXTOR

DNBI arrangement at W-7X DNBI

DNBI W-7X ion source E b = 60 keV I b = 10–12 A T=10–60 s F= 6 m

Electrode of DNBI W-7X ion optical system water channels

H - sources at BINP H - sources at BINP 10 A, 25 keV, 0.01 s pulse H - ion source mA, 30 keV DC H - ion sources The beams can be accelerated up to keV

Summary Summary BINP is ready to participate in ITER DNBI development