Results 1 to 10 of about 1,118,371 (206)

Overview of the design of the ITER heating neutral beam injectors [PDF]

New Journal of Physics, 2017
The heating neutral beam injectors (HNBs) of ITER are designed to deliver 16.7 MW of 1 MeV D ^0 or 0.87 MeV H ^0 to the ITER plasma for up to 3600 s. They will be the most powerful neutral beam (NB) injectors ever, delivering higher energy NBs to the ...
R S Hemsworth, D Boilson, P Blatchford, M Dalla Palma, G Chitarin, H P L de Esch, F Geli, M Dremel, J Graceffa, D Marcuzzi, G Serianni, D Shah, M Singh, M Urbani, P Zaccaria   +14 more
doaj   +2 more sources

Negative ion sources [PDF]

Journal of Applied Physics, 2021
In this Tutorial, surface and double charge exchange negative ion sources for producing negative ion beams of different ion species will be described. The need for negative ions as the beam particles of tandem Van de Graaf accelerators and that for charge exchange injection of hydrogen negative ions into high-energy proton accelerators requires the ...
Bacal, M., Sasao, M., Wada, M.
openaire   +3 more sources

Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source

He jishu, 2021
BackgroundCesium injection can significantly reduce the work function of plasma grid surface of the radio frequency (RF) negative ion source, which is an effective way to promote the surface generation and improve the yield of H- ions.PurposeThis study ...
WANG Haoming, HU Chundong, CHEN Shiyong, XU Yongjian, PAN Junjun, WEI Jianglong, LIU Wei, CUI Qinglong, XIE Yahong, XIE Yuanlai, LIANG Lizhen   +10 more
doaj   +1 more source

Development of negative muonium ion source for muon acceleration

Physical Review Accelerators and Beams, 2021
A negative muonium ion (Mu^{-}) source using an aluminum foil target (Al target) was developed as a low-energy muon source. Mu^{-} ions are produced by irradiating the Al target with a 3-MeV positive muon (μ^{+}) beam and observed using a microchannel ...
R. Kitamura, S. Bae, S. Choi, Y. Fukao, H. Iinuma, K. Ishida, N. Kawamura, B. Kim, Y. Kondo, T. Mibe, Y. Miyake, M. Otani, G. P. Razuvaev, N. Saito, K. Shimomura, P. Strasser   +15 more
doaj   +1 more source

Negative Ion Extraction from a Large RF Negative Ion Source [PDF]

Negative Ion Extraction from a Large RF Negative Ion Source
A. Ando, K. Tsumori, O. Kaneko, T. Kuroda, T. Takanashi, Y. Oka, Y. Takeiri   +6 more
core   +1 more source

Multicusp negative ion source [PDF]

Review of Scientific Instruments, 1980
The characteristics of a steady state, surface conversion, multiline-cusp negative ion source have been investigated for the production of high-energy neutral beams. With the presence of cesium, this source has been operated at a neutral pressure of 1×10−3 Torr to generate a H− ion current greater than 400 mA.
K. W. Ehlers, K. N. Leung
openaire   +1 more source

High-intensity negative ion sources [PDF]

Nuclear Instruments and Methods, 1963
The production of beams of negative deuterium ions was studied with two ion sources with geometries that could be employed in a cyclotron. The negative ions were extracted directly from the arc in a direction normal to the magnetic field without using a charge-exohange medium. With a high gas pressure in the arc and an arc current of 5 amp, a 2-ma beam
Ehlers, Kenneth W., Gavin, Basil P., Hubbard, Edward L.   +2 more
openaire   +2 more sources

Enhancing ion extraction with an inverse sheath in negative hydrogen ion sources for NBI heating

Nuclear Fusion, 2023
Negative hydrogen ion (H ^− ) sources employed in neutral beam injection (NBI) systems are subject to extraction efficiency issues due to the considerable volumetric losses of negative hydrogen ions.
Guang-Yu Sun, Wei Yang, Jian Chen, Hao-Min Sun, Bao-Hong Guo, Shu Zhang, Ying-Han Wang, Xiong Yang, An-Bang Sun, Guan-Jun Zhang   +9 more
doaj   +1 more source

Abundance ratio of multiple velocity distribution components in a single negative ion beamlet produced by a cesium-seeded negative ion source

AIP Advances, 2022
Well focused negative ion beams are required for neutral beam injection systems for heating and current drive in magnetically confined fusion plasma experiments.
Yasuaki Haba, Mitsutoshi Aramaki, Katsuyoshi Tsumori, Masaki Osakabe, Katsunori Ikeda, Haruhisa Nakano, Kenichi Nagaoka   +6 more
doaj   +1 more source

The conceptual design of NNBI electrostatic residual ion dump for fusion reactor

He jishu, 2022
BackgroundNegative ion source based on neutral beam injector is an important auxiliary heating and current driving system for the China Fusion Experimental Test Reactor (CFETR).
LI Chao, LIANG Lizhen, SHI Chao, YI Wei, XIE Yahong, XIE Yuanlai, HU Chundong   +6 more
doaj   +1 more source