Abstract
A new hydrogen pumping scheme has been proposed which controls recycling of the particles for significant improvement of the energy confinement in toroidal magnetic fusion devices. In this scheme, a part of the vacuum vessel surface near the divertor is covered with carbon sheets of a large surface area. Before discharge initiation, the sheets are baked up to 700 {approx} 1000degC to remove the previously trapped hydrogen atoms. After being cooled down to below {approx} 200degC, the unsaturated carbon sheets trap high energy charge exchange hydrogen atoms effectively during a discharge and overall pumping efficiency can be as high as {approx} 50 %. (author).
Citation Formats
Ohyabu, N, Sagara, A, Kawamura, T, Motojima, O, and Ono, T.
Carbon sheet pumping.
Japan: N. p.,
1993.
Web.
Ohyabu, N, Sagara, A, Kawamura, T, Motojima, O, & Ono, T.
Carbon sheet pumping.
Japan.
Ohyabu, N, Sagara, A, Kawamura, T, Motojima, O, and Ono, T.
1993.
"Carbon sheet pumping."
Japan.
@misc{etde_10110165,
title = {Carbon sheet pumping}
author = {Ohyabu, N, Sagara, A, Kawamura, T, Motojima, O, and Ono, T}
abstractNote = {A new hydrogen pumping scheme has been proposed which controls recycling of the particles for significant improvement of the energy confinement in toroidal magnetic fusion devices. In this scheme, a part of the vacuum vessel surface near the divertor is covered with carbon sheets of a large surface area. Before discharge initiation, the sheets are baked up to 700 {approx} 1000degC to remove the previously trapped hydrogen atoms. After being cooled down to below {approx} 200degC, the unsaturated carbon sheets trap high energy charge exchange hydrogen atoms effectively during a discharge and overall pumping efficiency can be as high as {approx} 50 %. (author).}
place = {Japan}
year = {1993}
month = {Jul}
}
title = {Carbon sheet pumping}
author = {Ohyabu, N, Sagara, A, Kawamura, T, Motojima, O, and Ono, T}
abstractNote = {A new hydrogen pumping scheme has been proposed which controls recycling of the particles for significant improvement of the energy confinement in toroidal magnetic fusion devices. In this scheme, a part of the vacuum vessel surface near the divertor is covered with carbon sheets of a large surface area. Before discharge initiation, the sheets are baked up to 700 {approx} 1000degC to remove the previously trapped hydrogen atoms. After being cooled down to below {approx} 200degC, the unsaturated carbon sheets trap high energy charge exchange hydrogen atoms effectively during a discharge and overall pumping efficiency can be as high as {approx} 50 %. (author).}
place = {Japan}
year = {1993}
month = {Jul}
}