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 …

This instrument allows controlled evaporation of the alkali metal cesium over a wide range of
evaporation rates. The oven has three unique features. The first is an alkali metal reservoir …

In the ITER neutral beam injectors caesium will be used in the negative ion source to
enhance the ion yield, by lowering the surface work function, and to reduce the co-extracted …

We have performed a study of several cesium oven designs. A comparison between
recirculating (or sticking-wall) and collimating (or re-emitting-wall) ovens is made in order to …

A proof of principle experiment has been performed for the in situ measurement of the work
function in vacuum conditions (~ 10− 7 torr) relevant to cesium-seeded negative ion sources …

Operational commissioning of ROBIN forms an important milestone in the Indian programme
on the R&D on negative ion beams. The commissioning activity has been effected in …

Caesium (Cs) will be evaporated inside the HUST negative ion source to enhance the
negative ion yield by lowering the surface work function. To control the Cs vapour flux …

Abstract The BATMAN Upgrade (BUG) test facility at IPP is contributing to the development
of RF-driven H-sources towards the ITER neutral beam injection and beyond. BUG is …

Negative ion sources for neutral beam injection rely on surface production of negative ions
on a caesiated low work-function surface (plasma grid). To maintain the low work function in …

Positioning of Cesium (Cs) oven modules in the complex interface dominated space
envelope of a negative ion source such as Diagnostic Neutral Beam (DNB) source for ITER …