Giant negative ion sources for neutral beam injectors deliver huge negative ion currents,
thanks to their multi-beamlet configuration. As the single-beamlet optics defines the …

An overview of the recent operations and the main results of cesium injection in the Source
for the Production of Ions of Deuterium Extracted from Rf plasma (SPIDER) negative ion …

ITER envisages the use of two heating neutral beam injectors plus an optional one as part of
the auxiliary heating and current drive system, to reach the desired performances during its …

An improvement for the vacuum system of the multidriver radio frequency (RF) prototype
negative ion source SPIDER has been developed, to allow operating at high RF power …

Design processes of a large-scale negative ion accelerator for neutral beam injection (NBI)
application involve a series of physics and engineering issues, which include high voltage …

SPIDER is the prototype negative ion source of the heating neutral beam injectors for ITER.
As required by the ITER injector design, the SPIDER beam source is entirely contained …

ITER's NBI systems are a first of its kind system with very challenging targets for the RF-
driven ion source and the acceleration stage. In a step ladder approach, the ion source test …

Magnetic field plays an essential role in negative ion-driven neutral beam injectors (NBIs),
being necessary to counteract the inevitable interaction between electrons and negative …

The Source for the Production of Ions of Deuterium Extracted from an RF plasma (SPIDER)
experiment is the full-size test-bed of the negative ion sources of ITER neutral beams. It aims …

SPIDER experiment includes an RF inductively coupled plasma source working at 0.3 Pa of
gas pressure (H/D) where plasma is generated and heated by eight RF drivers, fed by four …