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12th session

Date: 6 Sep 11:00 - 12:30

Conveners

    • Dr. Na, Byungkeun (National Fusion Research Institute)

Timetable | Contribution List

Displaying 3 contributions out of 3
Type: Oral Session: 12th session
Track: H– and D– sources for fusion, accelerators and other applications
Development of negative ion sources and development of the accelerator of negative ion beams are of crucial importance for nuclear fusion research. In order to evaluate beam optics, and to investigate the characteristics of meniscus formed between negative ion beam region and plasma region, detaild measurement of beam property is required. Therefore, we have developed a new beamlet monitor system ... More
Presented by Mr. Yasuaki HABA on 6/9/2018 at 5:00
Type: Oral Session: 12th session
Track: H– and D– sources for fusion, accelerators and other applications
The development of a high power negative ion beam accelerator is one of the key aspects in the neutral beam injection system (NBI) for fusion reactors. For example, the ITER NBI requires 1 MeV deuterium negative ion (D<sup>-</sup>) beams with a current density of 200 A/m<sup>2</sup> and a divergence angle of < 7 mrad. Such high power beam accelerations have been demonstrated in a MeV test facility ... More
Presented by Glynnis Mae SAQUILAYAN on 6/9/2018 at 4:30
Type: Oral Session: 12th session
Track: Fundamental processes and modelling
It has been experimentally proven that adsorption of alkali metals like Caesium (Cs) on tungsten reduces tungsten’s effective work function. The work function of pure W surface is 4.55eV and that of pure Cs is 2.14 eV [1]; however with fractional monolayer (0.6 – 0.7) of Cs coverage on W surface makes the effective work-function of the W surface as low as 1.5eV [2]. It is well known from previ ... More
Presented by Mr. Pranjal SINGH on 6/9/2018 at 4:00
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