抄録
The magnetic field distributions of an HTS bulk magnet system were precisely measured between the face-to-face 3.4-T magnetic poles. After the activation by 5-T field cooling magnetization, the magnetic flux density has reached the value of 2.26 T at the center of the 34-mm gap. The sum of the local magnetic fields generated from each magnetic pole coincides with the local field strength in the gap. We estimated the homogeneity of the magnetic flux densities of Bz and By, which were measured at various positions along z and y-axes in the center portion of the 60-mm gap. Since the magnetic flux density becomes smooth with increasing distance, we obtained the smallest distribution range of 123 ppm of Bz = 1.62 T at the center of the gap as for Bz. On the other, as for By, the smallest distribution range of 1125 ppm of Bz = 1.20 T was obtained at z = 1.7 mm distant from the center point. Since there must exist a certain plane which has no vector components along the radius direction at the center of the gap, the closer the z-positions come to the null point, the more homogeneous the field distribution becomes.
| 元の言語 | English |
|---|---|
| 記事番号 | 6626624 |
| ジャーナル | IEEE Transactions on Applied Superconductivity |
| 巻 | 24 |
| 発行部数 | 3 |
| DOI | |
| 出版物ステータス | Published - 2014 1 1 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
これを引用
Strong magnetic field generator containing HTS bulk magnets and compact refrigerators. / Oka, Tetsuo; Hirayama, Eri; Kanai, Tomoaki; Ogawa, Jun; Fukui, Satoshi; Sato, Takao; Yokoyama, Kazuya; Nakamura, Takashi.
：: IEEE Transactions on Applied Superconductivity, 巻 24, 番号 3, 6626624, 01.01.2014.研究成果: Article
}
TY - JOUR
T1 - Strong magnetic field generator containing HTS bulk magnets and compact refrigerators
AU - Oka, Tetsuo
AU - Hirayama, Eri
AU - Kanai, Tomoaki
AU - Ogawa, Jun
AU - Fukui, Satoshi
AU - Sato, Takao
AU - Yokoyama, Kazuya
AU - Nakamura, Takashi
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The magnetic field distributions of an HTS bulk magnet system were precisely measured between the face-to-face 3.4-T magnetic poles. After the activation by 5-T field cooling magnetization, the magnetic flux density has reached the value of 2.26 T at the center of the 34-mm gap. The sum of the local magnetic fields generated from each magnetic pole coincides with the local field strength in the gap. We estimated the homogeneity of the magnetic flux densities of Bz and By, which were measured at various positions along z and y-axes in the center portion of the 60-mm gap. Since the magnetic flux density becomes smooth with increasing distance, we obtained the smallest distribution range of 123 ppm of Bz = 1.62 T at the center of the gap as for Bz. On the other, as for By, the smallest distribution range of 1125 ppm of Bz = 1.20 T was obtained at z = 1.7 mm distant from the center point. Since there must exist a certain plane which has no vector components along the radius direction at the center of the gap, the closer the z-positions come to the null point, the more homogeneous the field distribution becomes.
AB - The magnetic field distributions of an HTS bulk magnet system were precisely measured between the face-to-face 3.4-T magnetic poles. After the activation by 5-T field cooling magnetization, the magnetic flux density has reached the value of 2.26 T at the center of the 34-mm gap. The sum of the local magnetic fields generated from each magnetic pole coincides with the local field strength in the gap. We estimated the homogeneity of the magnetic flux densities of Bz and By, which were measured at various positions along z and y-axes in the center portion of the 60-mm gap. Since the magnetic flux density becomes smooth with increasing distance, we obtained the smallest distribution range of 123 ppm of Bz = 1.62 T at the center of the gap as for Bz. On the other, as for By, the smallest distribution range of 1125 ppm of Bz = 1.20 T was obtained at z = 1.7 mm distant from the center point. Since there must exist a certain plane which has no vector components along the radius direction at the center of the gap, the closer the z-positions come to the null point, the more homogeneous the field distribution becomes.
KW - Bulk superconductor
KW - Field distribution
KW - Magnetic field generator
KW - Refrigerator
UR - http://www.scopus.com/inward/record.url?scp=84904598034&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904598034&partnerID=8YFLogxK
U2 - 10.1109/TASC.2013.2284859
DO - 10.1109/TASC.2013.2284859
M3 - Article
AN - SCOPUS:84904598034
VL - 24
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 6626624
ER -