Vanni Toigo

TL;DR: In this paper, the evolution of a reversed-field-pinch plasma towards a self-organized single-helicity state suggests that instability problems, which have previously hindered the development of these devices, could now be overcome.

TL;DR: The ITER Neutral Beam Test Facility (NBTF) is hosted in Padova, Italy and includes two experiments: MITICA, the full-scale prototype of the ITER heating neutral beam injector, and SPIDER, full-size radio frequency negative-ions source.

TL;DR: In this paper, the authors present a general overview of the test facility and of the status of development of the main components at this important stage of the overall development, focusing on the latest and most critical issues, regarding both physics and technology, describing the identified solutions.

TL;DR: The purpose of MITICA is to demonstrate that all operational parameters of the ITER HNB accelerator can be experimentally achieved, thus establishing a large step forward in the performances of neutral beam injectors in comparison with the present experimental devices.

TL;DR: Clean mode control (CMC) as mentioned in this paper was proposed to correct the aliasing of the sideband harmonics generated by the discrete saddle coils in real time, which leads to a smoother (i.e. more axisymmetric) boundary.