8th International symposium on Negative Ions, Beams and Sources - NIBS'22

Session

Oral session 7

5 Oct 2022, 08:30

Auditorium (Orto Botanico)

49. Source Performance Optimization in Cesiated Mode in ROBIN

Kaushal PANDYA (Institute for Plasma Research)

05/10/2022, 08:30

10. Ion sources for fusion

Oral

ITER reference design, inductively coupled single driver RF-source ROBIN is operational at
IPR, Gandhinagar. The first phase of the operation yielded H- ion current density of 22-25
mA/cm2 and with electron to-ion ratios >1. The Cesium (Cs) consumption was very high
compared to a similar source operated at IPP, Garching. The lessons learned from the
operational experience showed the...

72. Plasma emission monitored via optical emission spectroscopy during the Cs conditioning at SPIDER

Isabella MARIO

05/10/2022, 09:00

2. H– and D– sources for fusion, accelerators and other applications

Short oral

The SPIDER test facility is the full-size ITER neutral beam injector (NBI) ion source, required to provide 355 $\mathrm{A/m^2}$ extracted negative ion current density in hydrogen (285 $\mathrm{A/m^2}$ in deuterium) with an electron-to-ion ratio lower than 0.5 (1 in deuterium). The negative ion source is integrated with a system of three grids, which allows the extraction and acceleration of...

82. Experimental results of the SPIDER negative ion accelerator in view of the next operations

emanuele SARTORI

05/10/2022, 09:20

10. Ion sources for fusion

Oral

Three years of experiments on SPIDER allowed characterizing the main features of the source plasma and of the negative ion beam, in the original design configuration. For the large dimensions of the source chamber, and of the extraction area, the investigation of the single-beamlet currents and of the source plasma uniformity had to be carried out to extend the knowledge gained in smaller...

73. Progress in the development of negative ion beam source in Korea

Min PARK (Korea institute of Fusion Energy (KFE))

05/10/2022, 09:50

10. Ion sources for fusion

Short oral

In Korea, as part of the ITER non-procurement core technology development project, the development of a negative ion beam source is in progress.
The overall period can be divided into 3 phases corresponding to 3 prototype negative ion beam sources. In the first phase, a Cs-free ion source using 2 MHz RF up to 10 kW was developed. A 4 mm thick water-cooled Faraday shield was inserted inside an...