The negative-ion based neutral beam injector for heating and current drive of the ITER
plasma (ITER HNB) is under development, at present focusing on the optimization of the full …

To reach fusion conditions and control the plasma configuration in ITER, the next step in
tokamak fusion research, two neutral beam injectors (NBIs) will supply 16.5 MW each, by …

ITER reached 50% completion of the work required to achieve First Plasma in November
2017. Progress has been made on ITER infrastructure since the 2016 Fusion Energy …

The requirements of ITER neutral beam injectors (1 MeV, 40 A negative deuterium ion
current for 1 h) have never been simultaneously attained; therefore, a dedicated Neutral …

We present the development and first use of a set of movable electrostatic probes on the full-
scale ITER heating neutral beam prototype negative-ion source SPIDER. The probes access …

For the DT operational phase of the international fusion experiment ITER, starting in 2035,
pulses are planned with Q> 10 and a duration of 400 s and pulses with Q= 5 for up to 3600 …

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, ITER's full-size beam source at the Neutral Beam Test Facility (NBTF), has been
operational since 2018. SPIDER's mission is to optimize the operation of the beam source in …

In SPIDER the negative ions are extracted from a plasma generated with RadioFrequency
drivers, each fed with a power up to 100 kW at the frequency of 1 MHz. One of its …