Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge

K. Ichimura; M. Fukumoto; M. M. Islam; M. S. Islam; K. Shimizu; K. Fukui; M. Ohuchi; K. Nojiri; A. Terakado; M. Yoshikawa; N. Ezumi; M. Sakamoto; Y. Nakashima

doi:10.1063/1.4960536

Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge

K. Ichimura, M. Fukumoto, M. M. Islam, M. S. Islam, K. Shimizu, K. Fukui, M. Ohuchi, K. Nojiri, A. Terakado, M. Yoshikawa, N. Ezumi, M. Sakamoto, Y. Nakashima

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9 Scopus citations

Abstract

In the divertor simulation experiments in the GAMMA 10/PDX tandem mirror, pressure of the neutral gas was investigated by using a fast ionization gauge. The gauge was absolutely calibrated for hydrogen gas by using a capacitance manometer. Change of the gauge sensitivity due to the magnetic field of GAMMA 10/PDX was also evaluated. The typical gas pressure measured in detached plasma experiments was 0.1-10 Pa. The degree of plasma detachment determined from the reduction of heat flux was enhanced as the gas pressure increases. Rapid increase of the gas pressure under the plasma flow was also observed.

Original language	English
Article number	11D424
Journal	Review of Scientific Instruments
Volume	87
Issue number	11
DOIs	https://doi.org/10.1063/1.4960536
State	Published - Nov 1 2016
Externally published	Yes

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Ichimura, K., Fukumoto, M., Islam, M. M., Islam, M. S., Shimizu, K., Fukui, K., Ohuchi, M., Nojiri, K., Terakado, A., Yoshikawa, M., Ezumi, N., Sakamoto, M., & Nakashima, Y. (2016). Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge. Review of Scientific Instruments, 87(11), Article 11D424. https://doi.org/10.1063/1.4960536

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title = "Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge",

abstract = "In the divertor simulation experiments in the GAMMA 10/PDX tandem mirror, pressure of the neutral gas was investigated by using a fast ionization gauge. The gauge was absolutely calibrated for hydrogen gas by using a capacitance manometer. Change of the gauge sensitivity due to the magnetic field of GAMMA 10/PDX was also evaluated. The typical gas pressure measured in detached plasma experiments was 0.1-10 Pa. The degree of plasma detachment determined from the reduction of heat flux was enhanced as the gas pressure increases. Rapid increase of the gas pressure under the plasma flow was also observed.",

author = "K. Ichimura and M. Fukumoto and Islam, \{M. M.\} and Islam, \{M. S.\} and K. Shimizu and K. Fukui and M. Ohuchi and K. Nojiri and A. Terakado and M. Yoshikawa and N. Ezumi and M. Sakamoto and Y. Nakashima",

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month = nov,

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doi = "10.1063/1.4960536",

language = "English",

volume = "87",

journal = "Review of Scientific Instruments",

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T1 - Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge

AU - Ichimura, K.

AU - Fukumoto, M.

AU - Islam, M. M.

AU - Islam, M. S.

AU - Shimizu, K.

AU - Fukui, K.

AU - Ohuchi, M.

AU - Nojiri, K.

AU - Terakado, A.

AU - Yoshikawa, M.

AU - Ezumi, N.

AU - Sakamoto, M.

AU - Nakashima, Y.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - In the divertor simulation experiments in the GAMMA 10/PDX tandem mirror, pressure of the neutral gas was investigated by using a fast ionization gauge. The gauge was absolutely calibrated for hydrogen gas by using a capacitance manometer. Change of the gauge sensitivity due to the magnetic field of GAMMA 10/PDX was also evaluated. The typical gas pressure measured in detached plasma experiments was 0.1-10 Pa. The degree of plasma detachment determined from the reduction of heat flux was enhanced as the gas pressure increases. Rapid increase of the gas pressure under the plasma flow was also observed.

AB - In the divertor simulation experiments in the GAMMA 10/PDX tandem mirror, pressure of the neutral gas was investigated by using a fast ionization gauge. The gauge was absolutely calibrated for hydrogen gas by using a capacitance manometer. Change of the gauge sensitivity due to the magnetic field of GAMMA 10/PDX was also evaluated. The typical gas pressure measured in detached plasma experiments was 0.1-10 Pa. The degree of plasma detachment determined from the reduction of heat flux was enhanced as the gas pressure increases. Rapid increase of the gas pressure under the plasma flow was also observed.

UR - https://www.scopus.com/pages/publications/84982084462

U2 - 10.1063/1.4960536

DO - 10.1063/1.4960536

M3 - Article

AN - SCOPUS:84982084462

SN - 0034-6748

VL - 87

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 11

M1 - 11D424

ER -

Measurement of neutral gas pressure in the D-module of GAMMA 10/PDX by using ASDEX type fast ionization gauge

Abstract

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