TITLE

Evaluation of an electrostatic dust removal system with potential application in next-step fusion devices

AUTHOR(S)
Friesen, F. Q. L.; John, B.; Skinner, C. H.; Roquemore, A. L.; Calle, C. I.
PUB. DATE
May 2011
SOURCE
Review of Scientific Instruments;May2011, Vol. 82 Issue 5, p053502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The ability to manage inventories of carbon, tritium, and high-Z elements in fusion plasmas depends on means for effective dust removal. A dust conveyor, based on a moving electrostatic potential well, was tested with particles of tungsten, carbon, glass, and sand. A digital microscope imaged a representative portion of the conveyor, and dust particle size and volume distributions were derived before and after operation. About 10 mm3 volume of carbon and tungsten particles were moved in under 5 s. The highest driving amplitude tested of 3 kV was the most effective. The optimal driving frequency was 210 Hz (maximum tested) for tungsten particles, decreasing to below 60 Hz for the larger sand particles. Measurements of particle size and volume distributions after 10 and 100 cycles show the breaking apart of agglomerated carbon and the change in particle distribution over short timescales (<1 s).
ACCESSION #
62010777

 

Related Articles

  • INFLUENCE OF NOVEL 'DISPERSED FUSION TECHNIQUE' ON DISSOLUTION AND PHARMACOTECHNICAL PROPERTIES OF PHARMACEUTICAL SOLID DISPERSION. Gahoi, Sachin; Jain, Gaurav K.; Singhal, Mayank; Anwar, Mohammad; Ahmad, Farhan J.; Khar, Roop K. // International Journal of Pharmaceutical Sciences Review & Resear;May/Jun2011, Vol. 8 Issue 2, p170 

    This research compares two solid dispersion techniques; In-situ fusion (IF) and Dispersed fusion (DF) to improve the dissolution of lumefantrine, poorly water-soluble model drug, with particular attention to technological properties of granules. Solid dispersions having identical composition...

  • Effect of activated carbon particle size on the thermo-foaming of aqueous sucrose resin and properties of the carbon foams. Narasimman, Rajaram; Vijayan, Sujith; Prabhakaran, Kuttan // Journal of Materials Research;Jan2015, Vol. 30 Issue 1, p46 

    The carbon foams prepared by the thermo-foaming of dispersions of activated carbon (AC) powder of various average particle sizes (4.9 to 15 μm) in an aqueous sucrose resin were characterized. The stability of the wet foams increased with the decrease in the AC particle size as finer particles...

  • Deuterium-tritium plasmas in the Joint European Torus (JET): Behavior and implications. Gibson, A. // Physics of Plasmas;May98, Vol. 5 Issue 5, p1839 

    Examines deuterium-tritium fusion experiments in the International Thermonuclear Experimental Reactor (ITER). Discussion on isotope dependence of confinement, high-mode threshold, and alpha particle heating; Relevance of ITER; Presentation of tritium wall loading, clean-up, close coupled plant,...

  • Growth mechanism of Ag-foil-based artificially superconducting joints of YBa2Cu3O7 monoliths.  // Journal of Materials Research;Oct2006, Vol. 21 Issue 10, p14 

    A new method was developed allowing large superconducting Yba2Cu3O7 (YBCO) monoliths having complex shapes to be obtained. This method consists of joining two or more YBCO monoliths, and it is based on the interfacial melting induced by metallic Ag thin foils inserted between YBCO pellets....

  • Pulsed-power-driven cylindrical liner implosions of laser preheated fuel magnetized with an axial field. Slutz, S. A.; Herrmann, M. C.; Vesey, R. A.; Sefkow, A. B.; Sinars, D. B.; Rovang, D. C.; Peterson, K. J.; Cuneo, M. E. // Physics of Plasmas;May2010, Vol. 17 Issue 5, p056303 

    The radial convergence required to reach fusion conditions is considerably higher for cylindrical than for spherical implosions since the volume is proportional to r2 versus r3, respectively. Fuel magnetization and preheat significantly lowers the required radial convergence enabling cylindrical...

  • Low speed centrifugal casting of Functionally Graded solid cast ingot by anomalous particle distribution. Mer, K. K. S.; Ray, S. // AIP Conference Proceedings;12/26/2011, Vol. 1414 Issue 1, p262 

    Functionally graded cylindrical ingot of Al-Al2O3 composite synthesized by centrifugal casting shows particle distribution and hardness decreasing radially from the outer radius to inner radius. The progressive decrease in alumina content and hardness from the outer radius towards the center may...

  • Study of size-dependent glass transition and Kauzmann temperatures of tin dioxide nanoparticles. Bhatt, Purvi; Pratap, Arun; Jha, Prafulla // Journal of Thermal Analysis & Calorimetry;Nov2012, Vol. 110 Issue 2, p535 

    The size and shape effects on melting, glass transition, and Kauzmann temperatures of SnO nanoparticles using Lindemann's criterion have been studied. The melting temperature of SnO nanoparticles decreases as the size of the particle decreases. As the particle size increases, melting temperature...

  • Development of high power negative-ion sources for fusion research at JAERI. Ohara, Y.; Hanada, M.; Inoue, T.; Maeno, S.; Miyamoto, K.; Mizuno, M.; Okumura, Y.; Tanaka, M.; Watanabe, K. // Review of Scientific Instruments;Apr94, Vol. 65 Issue 4, p1159 

    Recent progress regarding high power negative-ion source development for fusion research at JAERI is described. Using the cesium-seeded volume production-type negative-ion sources with an electrostatic acceleration system, a stable production of multiampere negative hydrogen/ deuterium ion beams...

  • Low-frequency gyrotrons for fusion studies. Zapevalov, V. E.; Kalynov, Yu. K.; Lygin, V. K.; Malygin, O. V.; Malygin, S. A.; Moiseev, M. A.; Manuilov, V. N.; Soluyanova, E. A.; Tai, E. M.; Khizhnjak, V. I. // Radiophysics & Quantum Electronics;Mar2006, Vol. 49 Issue 3, p185 

    A number of experimental plasma devices require high-power sources of electromagnetic radiation in a range of 5 to 30 GHz. In this paper, we consider gyrotrons as such sources. The difficulties of creating long-wavelength gyrotrons are discussed and the possibility to overcome them is shown for...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics