Electron cyclotron heating experiments on the DIII-D tokamak

Conference · Thu Jan 01 00:00:00 EST 1998

OSTI ID:645542

Prater, R ^[1]; Austin, M E ^[2]; Bernabei, S ^[3]

---

1. General Atomics, San Diego, CA (United States)
2. Univ. of Texas, Austin, TX (United States)
3. Princeton Plasma Physics Lab., NJ (United States); and others

Initial experiments on heating and current drive using second harmonic electron cyclotron heating (ECH) are being performed on the DIII-D tokamak using the new 110 GHz ECH system. Modulation of the ECH power in the frequency range 50 to 300 Hz and detection of the temperature perturbation by ECE diagnostics is used to validate the location of the heating. This technique also determines an upper bound on the width of the deposition profile. Analysis of electron cyclotron current drive indicates that up to 0.17 MA of central current is driven, resulting in a negative loop voltage near the axis.

• Research Organization: General Atomics, San Diego, CA (United States); Univ. of Texas, Austin, TX (United States); Princeton Plasma Physics Lab., NJ (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114; FG03-96ER54373; AC02-76CH03073; AC05-96OR22464
• OSTI ID: 645542
• Report Number(s): GA-A22803; CONF-980130-; ON: DE98003185; TRN: 98:009939
• Resource Relation: Conference: 2. Europhysics topical conference on RF heating and current drive of fusion devices, Brussels (Belgium), 20-23 Jan 1998; Other Information: PBD: Jan 1998
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
DOUBLET-3 DEVICE
ECR HEATING
LOWER HYBRID CURRENT DRIVE
ENERGY ABSORPTION
MICROWAVE AMPLIFIERS
PLASMA DIAGNOSTICS