Abstract
We measured the dependence of the collected flux of dust particles on the bias potential Δφ with respect to ground in the Large Helical Device at the National Institute of Fusion Science. This is a first step toward developing a novel method for removing dust for fusion reactors based on applying a local bias potential. The collected dust particles were classified into two kinds: spherical carbon particles smaller than 300 nm and stainless-steel flakes smaller than 1 μm. For Δφ = -70 to +70 V, the flux of spherical particles increased exponentially with increasing Δφ. The flux of flakes increased when Δφ was increased from -70 V to +30 V and it decreased at higher Δφ. These results suggest that this method is useful for removing carbon and metal dust particles from the shadow area of fusion devices using appropriate control of the local bias potential.
| Original language | English |
|---|---|
| Pages (from-to) | S727-S730 |
| Journal | Journal of Nuclear Materials |
| Volume | 438 |
| Issue number | SUPPL |
| DOIs | |
| Publication status | Published - Jan 1 2013 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Cite this
Effects of DC substrate bias voltage on dust flux in the Large Helical Device. / Koga, Kazunori; Nishiyama, Katsushi; Morita, Yasuhiko; Uchida, Giichiro; Yamashita, Daisuke; Kamataki, Kunihiro; Seo, Hyunwoong; Itagaki, Naho; Shiratani, Masaharu; Ashikawa, Naoko; Masuzaki, Suguru; Nishimura, Kiyohiko; Sagara, Akio.
In: Journal of Nuclear Materials, Vol. 438, No. SUPPL, 01.01.2013, p. S727-S730.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effects of DC substrate bias voltage on dust flux in the Large Helical Device
AU - Koga, Kazunori
AU - Nishiyama, Katsushi
AU - Morita, Yasuhiko
AU - Uchida, Giichiro
AU - Yamashita, Daisuke
AU - Kamataki, Kunihiro
AU - Seo, Hyunwoong
AU - Itagaki, Naho
AU - Shiratani, Masaharu
AU - Ashikawa, Naoko
AU - Masuzaki, Suguru
AU - Nishimura, Kiyohiko
AU - Sagara, Akio
PY - 2013/1/1
Y1 - 2013/1/1
N2 - We measured the dependence of the collected flux of dust particles on the bias potential Δφ with respect to ground in the Large Helical Device at the National Institute of Fusion Science. This is a first step toward developing a novel method for removing dust for fusion reactors based on applying a local bias potential. The collected dust particles were classified into two kinds: spherical carbon particles smaller than 300 nm and stainless-steel flakes smaller than 1 μm. For Δφ = -70 to +70 V, the flux of spherical particles increased exponentially with increasing Δφ. The flux of flakes increased when Δφ was increased from -70 V to +30 V and it decreased at higher Δφ. These results suggest that this method is useful for removing carbon and metal dust particles from the shadow area of fusion devices using appropriate control of the local bias potential.
AB - We measured the dependence of the collected flux of dust particles on the bias potential Δφ with respect to ground in the Large Helical Device at the National Institute of Fusion Science. This is a first step toward developing a novel method for removing dust for fusion reactors based on applying a local bias potential. The collected dust particles were classified into two kinds: spherical carbon particles smaller than 300 nm and stainless-steel flakes smaller than 1 μm. For Δφ = -70 to +70 V, the flux of spherical particles increased exponentially with increasing Δφ. The flux of flakes increased when Δφ was increased from -70 V to +30 V and it decreased at higher Δφ. These results suggest that this method is useful for removing carbon and metal dust particles from the shadow area of fusion devices using appropriate control of the local bias potential.
UR - http://www.scopus.com/inward/record.url?scp=84885480905&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84885480905&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2013.01.154
DO - 10.1016/j.jnucmat.2013.01.154
M3 - Article
AN - SCOPUS:84885480905
VL - 438
SP - S727-S730
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - SUPPL
ER -