Temperature and density characteristics of the Helicity Injected Torus-II spherical tokamak indicating closed flux sustainment using coaxial helicity injection

被引：3

作者：

Hamp, W. T. ^{[1
]}

Jarboe, T. R. ^{[1
]}

Nelson, B. A. ^{[1
]}

O'Neill, R. G. ^{[1
]}

Raman, R. ^{[1
]}

Redd, A. J. ^{[1
]}

Stewart, B. T. ^{[1
]}

Mueller, D. ^{[2
]}

机构：

[1] Univ Washington, Seattle, WA 98195 USA

[2] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 08期

关键词：

D O I：

10.1063/1.2968205

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The electron temperature and density profiles of plasmas in the Helicity Injected Torus [HIT-II: T. R. Jarboe et al., Phys. Plasmas 5, 1807 (1998)] experiment are measured by multipoint Thomson scattering (MPTS). The HIT-II device is a small low-aspect-ratio tokamak (major radius 0.3 m, minor radius 0.2 m, toroidal field of up to 0.5 T), capable of inductive ohmic (OH) current drive, Coaxial Helicity Injection (CHI) current drive, or combinations of both. The temperature and density characteristics have been characterized by a ruby laser MPTS diagnostic at up to six locations within the plasma for a single diagnostic time per discharge. Observed hollow temperature profiles of CHI discharges are inconsistent with open flux only predictions for CHI and indicate a closed flux region during CHI current drive. 0 2008 American Institute of Physics.

引用

页数：10

共 31 条

[1] OBSERVATIONS OF THE MAGNETOHYDRODYNAMIC DYNAMO EFFECT IN A SPHEROMAK PLASMA
ALKARKHY, A
BROWNING, PK
CUNNINGHAM, G
GEE, SJ
RUSBRIDGE, MG
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (12) : 1814 - 1817
[2] MAGNETIC HELICITY AND DYNAMOS
BOOZER, AH
[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1993, 5 (07): : 2271 - 2277
[3] PROPERTIES OF DC HELICITY INJECTED TOKAMAK PLASMAS
DARROW, DS
ONO, M
FOREST, CB
GREENE, GJ
HWANG, YS
PARK, HK
TAYLOR, RJ
PRIBYL, PA
EVANS, JD
LAI, KF
LIBERATI, JR
[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (06): : 1415 - 1420
[4] Current amplification in SPHEX operated as a spherical tokamak
Gibson, KJ
Browning, PK
Gee, SJ
Woodruff, S
Willett, DM
[J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2000, 42 (12) : 1331 - 1347
[5] Compact high-resolution ion Doppler spectrometer for quartz ultraviolet line emissions
Gu, PM
Nagata, M
McCollam, KJ
Jarboe, TR
Nelson, BA
Redd, AJ
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (05) : 1337 - 1340
[6] PROGRESS WITH ENERGY CONFINEMENT TIME IN THE CTX SPHEROMAK
JARBOE, TR
WYSOCKI, FJ
FERNANDEZ, JC
HENINS, I
MARKLIN, GJ
[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (06): : 1342 - 1346
[7] The spheromak confinement device
Jarboe, TR
[J]. PHYSICS OF PLASMAS, 2005, 12 (05)
[8] Current drive experiments in the HIT-II spherical tokamak
Jarboe, TR
Gu, P
Izzo, VA
Jewell, PD
McCollam, KJ
Nelson, BA
Raman, R
Redd, AJ
Sieck, PE
Smith, RJ
Nagata, M
Uyama, T
[J]. NUCLEAR FUSION, 2001, 41 (06) : 679 - 685
[9] Results from current drive experiments on the Helicity Injected Torus
Jarboe, TR
Bohnet, MA
Mattick, AT
Nelson, BA
Orvis, DJ
[J]. PHYSICS OF PLASMAS, 1998, 5 (05) : 1807 - 1814
[10] Martin-Puplett multichannel far infrared heterodyne interferometer on the Helicity Injected Torus II
Jewell, PD
Smith, RJ
Jarboe, TR
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (01) : 80 - 87

← 1 2 3 4 →