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

Session

Oral session 12

7 Oct 2022, 10:50

Consorzio RFXNBTF - Teaching Room 3rd floor

20. Simple beam energy recovery as alternative to Residual Ion dump in Neutral Ion Beam Injections

Vincenzo VARIALE (Universita e INFN, Bari (IT))

07/10/2022, 10:50

15. New or advanced concepts

Oral

The Neutral Ion Beam Injection will be used to further heat the plasma temperature to reach the ignition of the fusion reaction to producing energy in ITER project and some energy efficiency is required. Recently a very simple beam energy recovery based on space charge effect has been proposed as an alternative to the Electrostatic Ion Dump since had some advantages in removing the residual...

40. Utilization of Compact ECR plasma source for large area H- ion production

Shweta SHARMA

07/10/2022, 11:20

15. New or advanced concepts

Oral

One of the most significant applications of plasma-based hydrogen negative ion (H-) sources is the production of high current, large area H-beams, which are used for the neural beam injection (NBI) system of a fusion plasma reactor like ITER. Such beams demand high density, uniform plasma (~10^12/cm^3 with variation limited to 10%) with low electron temperature (≤ 1 eV) generated over a large...

41. Experimental Characterization and Theoretical Studies of ECR Produced Hydrogen Plasma Ion Beams

Ms Priti SINGH (Department of Energy Science and Engineering, Indian Institute of Technology Delhi), RAMESH NARAYANAN (Department of Energy Science and Engineering, Indian Institute of Technology Delhi, India)

07/10/2022, 11:50

15. New or advanced concepts

Oral

Hydrogen plasma with its multiple constituent species (H, H2 at ground and excited vibrational levels, H+, H2+, H3+, H-) offers a rich array of applications in diverse fields of science and technology such as in materials processing, production of ion beams for fusion plasma heating etc. In the present work, a combination of a solenoid and a set of five permanent ring magnets were used to...

2. Photo-assisted Cl-, Br- and I- production in cesium sputter ion source

Mr Akbar HOSSAIN (University of Jyväskylä)

07/10/2022, 12:20

15. New or advanced concepts

Oral

The negative ion formation in the cesium sputter ion sources occurs on the surface of a cathode containing the ionized material. The cathode is covered by a thin layer of cesium (Cs), which lowers the work function of the surface enhancing the negative ion formation. Vogel [1] recently introduced a hypothesis that the negative ion current can be enhanced by exposing the cathode to a laser beam...