Discharge Characteristics of Large-Area High-Power RF Ion Source  for Positive and Negative Neutral Beam Injectors

Doo-Hee CHANG; Seung Ho JEONG; Min PARK; Tae-Seong KIM; Bong-Ki JUNG; Kwang Won LEE; Sang Ryul IN

doi:10.1088/1009-0630/18/12/13

Plasma Science and Technology > 2016 > 18(12): 1220-1225. > DOI: 10.1088/1009-0630/18/12/13

Doo-Hee CHANG, Seung Ho JEONG, Min PARK, Tae-Seong KIM, Bong-Ki JUNG, Kwang Won LEE, Sang Ryul IN. Discharge Characteristics of Large-Area High-Power RF Ion Source for Positive and Negative Neutral Beam Injectors[J]. Plasma Science and Technology, 2016, 18(12): 1220-1225. DOI: 10.1088/1009-0630/18/12/13

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Discharge Characteristics of Large-Area High-Power RF Ion Source for Positive and Negative Neutral Beam Injectors

Division of Nuclear Fusion Engineering & Technology Development, Korea Atomic Energy Research Institute, Daejeon 305-353, Republic of Korea

Funds: supported by the Ministry of Science, ICT and Future Planning of the Republic of Korea under the ITER Technology R&D Program, and National R&D Program Through the National Research Foundation of Korea (NRF) Funded by the Ministry of Science, ICT & Future Planning (NRF-2014M1A7A1A03045372)

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Received Date: March 13, 2016

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Abstract

Abstract

A large-area high-power radio-frequency (RF) driven ion source was developed for positive and negative neutral beam injectors at the Korea Atomic Energy Research Institute (KAERI). The RF ion source consists of a driver region, including a helical antenna and a discharge chamber, and an expansion region. RF power can be transferred at up to 10 kW with a fixed frequency of 2 MHz through an optimized RF matching system. An actively water-cooled Faraday shield is located inside the driver region of the ion source for the stable and steady-state operations of high-power RF discharge. Plasma ignition of the ion source is initiated by the injection of argon¬gas without a starter-filament heating, and the argon-gas is then slowly exchanged by the injection of hydrogen-gas to produce pure hydrogen plasmas. The uniformities of the plasma parameter, such as a plasma density and an electron temperature, are measured at the lowest area of the driver region using two RF-compensated electrostatic probes along the direction of the short¬and long-dimensions of the driver region. The plasma parameters will be compared with those obtained at the lowest area of the expansion bucket to analyze the plasma expansion properties from the driver region to the expansion region.
- neutral beam injector,
- RF ion source,
- plasma ignition,
- power loading,
- plasma parameters

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References (1)

References

1 Heinemann B, Fantz U, Franzen P, et al. 2013, Fusion Eng. Des., 88: 512 2 Antoni V, Agostinetti P, Aprile D, et al. 2014, Rev.Sci. Instrum., 85: 02B128 3 Kraus W, Speth E, Feist J H, et al. 1998, Rev. Sci.Instrum., 69: 956 4 Kraus W, Franzen P, Heinemann B, et al. 2001, Fusion Eng. Des., 56{57: 499 5 Chang Doo-Hee, Jeong Seung Ho, Kim Tae-Seong,et al. 2012, Current Appl. Phys., 12: 1217 6 Kim Tae-Seong, Jeong Seong Ho, Chang Doo-Hee,et al. 2014, Plasma Sci. Technol., 16: 620 7 Peng Y K M, Fogarty P J, Burgess T W, et al. 2005,IEEJ Trans. FM (Special Issue Review), 125: 1 8 Kim Keeman, Kim Hyong Chan, Yeom Jun-Ho, et al.2012, Conceptual Design Study for Korean DEMO Reactor. KSTAR Conference, February 22-24, Korea 9 Chang Doo-Hee, Jeong Seung-Ho, Oh Byung-Hoon,et al. 2005, Plasma Sources Sci. Technol., 14: 336 10 Jeong S H, Kim T S, Lee K W, et al. 2014,Development of a prototype negative ion source in KAERI. The 4th International Symposium on Negative Ions, Beams, and Sources (NIBS2014), 6-10October, Garching, Germany 11 Chang D H, Jeong S H, Kim T S, et al. 2014, Rev. Sci.Instrum., 85: 02B303 12 Chen F F. 2003, Langmuir Probe Diagnostics.Mini-Course on Plasma Diagnostics in IEEE-ICOPS meeting, June 05, Korea 13 Godyak V A, Demidov V I. 2011, Journal of Physics D: Applied Physics, 44: 233001 14 Chang Doo-Hee, Park Min, Jeong Seung Ho, et al.2014, J. Korean Phys. Soc., 65: 1273

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[10]	Rajneesh KUMAR, Dhiraj BORA. Experimental Study of Parameters of a Plasma Antenna[J]. Plasma Science and Technology, 2010, 12(5): 592-600.