The technical implementation of the potentially very efficient inboard pellet refueling scheme
in tokamaks remains so far restricted to low velocities (v 200–300 m/s) due to the fragile …

High-speed injection of pellets, composed of frozen hydrogen isotopes and multimillimeter
in size, is commonly used for core fueling of magnetically confined plasmas for controlled …

The technology to form and shoot high-Z cryogenic solid pellets mixed with deuterium using
a gas gun that are shattered upon injection into a plasma has been developed at Oak Ridge …

[en] Since the study and building in Grenoble of the first two-stage light gas gun (TSG) used
on plasma and its installation on Tore Supra in 1991, great progress has been made on this …

This paper reports on the new pellet injection system for refueling the ASDEX Upgrade
tokamak with cubic H2 or D2 pellets having alternative side lengths of 1.5, 1.75, and 2.0 mm …

Amongst the technological developments needed for ITER, the disruption mitigation system
(DMS) is one of the most challenging since it has to mitigate the consequences of high …

In order to perform plasma refueling experiments with cryogenic hydrogen pellets at the
midsize tokamak ASDEX Upgrade, a centrifuge injector was developed based on the novel …

Pellet injectors are needed to fuel long pulse tokamak plasmas and other magnetic
confinement devices. For this purpose, an apparatus has been developed that forms 1.3 …

The use of curved guide tubes for transporting frozen H pellets offers great flexibility for
pellet infection into plasma devices. While this technique has been previously employed, an …

An efficient control of the plasma density by pellet injection in the present and future
machines, like ITER, requires a very high reliability of the injector. After ice fabrication …