Abstract
Diamagnetic measurement methods in JT-60 and JT-60U are described. A diamagnetic loop inside the vacuum vessel and a Rogowski coil for compensation were installed in JT-60 to evaluate the plasma stored energy. A very low drift integrator was developed to differentiate the two signals. The effects of eddy currents flowing on the vacuum vessel and poroidal coil support were compensated by use of an analog circuit. Error fluxes due to poroidal coil currents were numerically subtracted. Toroidal effects are included for the data analysis. The stored energy of beam heated plasmas is calculated within 10 % errors. A compensation loop was installed in JT-60U in place of the Rogowski coil. The estimated error in the plasma stored energy was reduced to lower than 5 %. (author).
Tsuji, Shunji;
Neyatani, Yuzuru;
Hosogane, Nobuyuki;
Matsukawa, Makoto;
Takahashi, Minoru;
Totsuka, Toshiyuki;
Kimura, Toyoaki
[1]
- Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Citation Formats
Tsuji, Shunji, Neyatani, Yuzuru, Hosogane, Nobuyuki, Matsukawa, Makoto, Takahashi, Minoru, Totsuka, Toshiyuki, and Kimura, Toyoaki.
Diamagnetic measurements in JT-60/JT-60U.
Japan: N. p.,
1991.
Web.
Tsuji, Shunji, Neyatani, Yuzuru, Hosogane, Nobuyuki, Matsukawa, Makoto, Takahashi, Minoru, Totsuka, Toshiyuki, & Kimura, Toyoaki.
Diamagnetic measurements in JT-60/JT-60U.
Japan.
Tsuji, Shunji, Neyatani, Yuzuru, Hosogane, Nobuyuki, Matsukawa, Makoto, Takahashi, Minoru, Totsuka, Toshiyuki, and Kimura, Toyoaki.
1991.
"Diamagnetic measurements in JT-60/JT-60U."
Japan.
@misc{etde_10126220,
title = {Diamagnetic measurements in JT-60/JT-60U}
author = {Tsuji, Shunji, Neyatani, Yuzuru, Hosogane, Nobuyuki, Matsukawa, Makoto, Takahashi, Minoru, Totsuka, Toshiyuki, and Kimura, Toyoaki}
abstractNote = {Diamagnetic measurement methods in JT-60 and JT-60U are described. A diamagnetic loop inside the vacuum vessel and a Rogowski coil for compensation were installed in JT-60 to evaluate the plasma stored energy. A very low drift integrator was developed to differentiate the two signals. The effects of eddy currents flowing on the vacuum vessel and poroidal coil support were compensated by use of an analog circuit. Error fluxes due to poroidal coil currents were numerically subtracted. Toroidal effects are included for the data analysis. The stored energy of beam heated plasmas is calculated within 10 % errors. A compensation loop was installed in JT-60U in place of the Rogowski coil. The estimated error in the plasma stored energy was reduced to lower than 5 %. (author).}
place = {Japan}
year = {1991}
month = {Nov}
}
title = {Diamagnetic measurements in JT-60/JT-60U}
author = {Tsuji, Shunji, Neyatani, Yuzuru, Hosogane, Nobuyuki, Matsukawa, Makoto, Takahashi, Minoru, Totsuka, Toshiyuki, and Kimura, Toyoaki}
abstractNote = {Diamagnetic measurement methods in JT-60 and JT-60U are described. A diamagnetic loop inside the vacuum vessel and a Rogowski coil for compensation were installed in JT-60 to evaluate the plasma stored energy. A very low drift integrator was developed to differentiate the two signals. The effects of eddy currents flowing on the vacuum vessel and poroidal coil support were compensated by use of an analog circuit. Error fluxes due to poroidal coil currents were numerically subtracted. Toroidal effects are included for the data analysis. The stored energy of beam heated plasmas is calculated within 10 % errors. A compensation loop was installed in JT-60U in place of the Rogowski coil. The estimated error in the plasma stored energy was reduced to lower than 5 %. (author).}
place = {Japan}
year = {1991}
month = {Nov}
}