Experimental and theoretical determination of the efficiency of a sub-atmospheric flowing high power cascaded arc hydrogen plasma source

Vijvers, W.A.J.; Schram, D.C.; Shumack, A.; Cardozo, N.J. Lopes; Rapp, J.; Rooij, G.J. van

doi:10.1088/0963-0252/19/6/065016

Cited by 25 publications

(25 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is found that the plasma flow inside the arc channel is compatible with the description of a laminar flow from Ref. 17. Accordingly, in Fig.…”

Section: Sealing Pressure Characteristicssupporting

confidence: 81%

“…The temperature decreases with the gas flow rate, while increases with the arc current, and these trends have a good agreement with Vijers's results. 17,18 As higher gas flow rate will lead to increase of inlet pressure, according to Ref. 27, electron temperature will decrease as increasing the pressure in the discharge channel.…”

Section: A Plasma Parameters Measurementsmentioning

confidence: 99%

“…16 Vijers completed a lot of experimental and theoretical characterization work with a similar device, which functioned as a plasma source. 17,18 In this paper, we will first present a typical design of plasma window in Sec. II.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative characterization of arc discharge as vacuum interface

Huang

Wang

et al. 2014

Physics of Plasmas

View full text Add to dashboard Cite

An arc discharge with channel diameters of 3 mm and 6 mm and lengths between 30 mm and 60 mm was experimentally investigated for its potential to function as plasma window, i.e., interface vacuum regions of different pressures. Electron temperature of the plasma channel measured spectroscopically varied in the range of 7000 K to 15 000 K, increasing with discharge current while decreasing with gas flow rate. That plasma window had a slightly positive I-V characteristics over the whole range of investigated current 30 A-70 A. Measurements of pressure separation capability, which were determined by input current, gas flow rate, discharge channel diameter, and length, were well explained by viscosity effect and "thermal-block" effect. The experimental results of global parameters including temperature, gas flow rate, and voltage had a good agreement with the simulation results calculated by an axis-symmetry Fluent-based magneto-hydrodynamic model. V C 2014 AIP Publishing LLC. [http://dx.

show abstract

“…It is found that the plasma flow inside the arc channel is compatible with the description of a laminar flow from Ref. 17. Accordingly, in Fig.…”

Section: Sealing Pressure Characteristicssupporting

confidence: 81%

Section: A Plasma Parameters Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Quantitative characterization of arc discharge as vacuum interface

Huang

Wang

et al. 2014

Physics of Plasmas

View full text Add to dashboard Cite

show abstract

“…On the source manipulator water cooled cascaded arc sources [3] of different configurations can be installed depending on the requirements for plasma density and plasma temperature ranges. During plasma operation, the gas flows (up to 66.7 Pa m 3 /s per gas), gas types and cathode to anode current can be changed.…”

Section: Magnum-psi Installationmentioning

confidence: 99%

Operational status of the Magnum-PSI linear plasma device

Scholten

Emmichoven

Eck

et al. 2013

Fusion Engineering and Design

View full text Add to dashboard Cite

h i g h l i g h t s• High heat flux, high density plasmas in a highly accessible linear plasma device.• Plasma exposure of targets of different sizes under selectable plasma beam angles.• Dedicated plasma and surface diagnostics.• Differential vacuum pumping system. a r t i c l e i n f o b s t r a c tThe construction phase of the linear plasma generator Magnum-PSI at the FOM institute DIFFER has been completed and the facility has been officially opened in March 2012. The scientific program to gain more insight in the plasma-wall interactions relevant for ITER and future fusion reactors has started.In Magnum-PSI, targets of a wide range of materials and shapes can be exposed to high particle, high heat flux plasmas (>10 24 ions m −2 s −1 ; >10 MW/m 2 ). For magnetization of the plasma, oil-cooled electromagnets are temporarily installed to enable pulsed operation until the device is upgraded with a superconducting magnet. The magnets generate a field of up to 1.9 T close to the plasma source for a duration of 6 s. Longer exposure times are available for lower field settings.Plasma characterizations were done with a variety of gases (H, D, He, Ne and Ar) to determine the machine performance and prepare for subsequent scientific experiments. Thomson scattering and optical emission spectroscopy were used to determine the plasma parameters while infrared thermography and target calorimetry were used to determine the power loads to the surface. This paper reports on the status of Magnum-PSI and its diagnostic systems. In addition, an overview of the plasma parameters that can be achieved in the present state will be given.

show abstract

“…This is an unprecedented high value for a steady-state cascaded arc source and more than a factor of two higher than achieved in Pilot-PSI. 20 We attribute this high efficiency to low transport losses due to the low background pressure.…”

mentioning

confidence: 98%

Divertor conditions relevant for fusion reactors achieved with linear plasma generator

Eck¹,

Kleyn²,

Lof³

et al. 2012

Applied Physics Letters

View full text Add to dashboard Cite

Intense magnetized hydrogen and deuterium plasmas have been produced with electron densities up to 3.6 × 1020 m−3 and electron temperatures up to 3.7 eV with a linear plasma generator. Exposure of a W target has led to average heat and particle flux densities well in excess of 4 MW m−2 and 1024 m−2 s−1, respectively. We have shown that the plasma surface interactions are dominated by the incoming ions. The achieved conditions correspond very well to the projected conditions at the divertor strike zones of fusion reactors such as ITER. In addition, the machine has an unprecedented high gas efficiency.

show abstract

Experimental and theoretical determination of the efficiency of a sub-atmospheric flowing high power cascaded arc hydrogen plasma source

Cited by 25 publications

References 27 publications

Quantitative characterization of arc discharge as vacuum interface

Quantitative characterization of arc discharge as vacuum interface

Operational status of the Magnum-PSI linear plasma device

Divertor conditions relevant for fusion reactors achieved with linear plasma generator

Contact Info

Product

Resources

About