Published June 1989 | Version v1
Report Metadata-only

Measurements of snakes following multiple pellet fuelling of Jet

Creators

  • 1. Commission of the European Communities Abingdon, (UK). JET Joint Undertaking
  • 2. Stuttgart Univ. (Germany, F.R.)
  • 3. Max-Plank-Institut fuer Plasmaphysik, Garching (Germany, F.R.)

Description

The long lived density pertubation, or snake, observed during multiple pellet fuelling of JET, are discussed. The snake is caused by a local density perturbation rotating at a rational q - surface. LIDAR Thompson scattering profiles of electron temperature and density are obtained. A persistent periodic cutoff is seen at the snake radius, which implies a very long effective confinement time for the snake. The presence of locked modes in the plasma or the application of on-axis ion cyclotron radio frequency heating leads to a gradual decay of the snake

Part of:
Jet Joint Undertaking. Vol. 2

Additional details

Publishing Information

Imprint Title
Jet Joint Undertaking. Vol. 2
Imprint Pagination
648 p.
Journal Page Range
p. A32-A35.
Report number
EUR--12323

Conference

Title
15. European Conference on Controlled Fusion and Plasma Heating.
Dates
16-20 May 1988.
Place
Dubrovnik (Yugoslavia).

INIS

Country of Publication
European Commission (EC), Brussels (Belgium)
Country of Input or Organization
European Commission (EC), Brussels (Belgium)
INIS RN
22010873
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ELECTRON TEMPERATURE; FUEL PELLETS; JET TOKAMAK; PELLET INJECTION; PLASMA CONFINEMENT; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA DISRUPTION; PLASMA INSTABILITY; THOMSON SCATTERING
Descriptors DEC
CLOSED PLASMA DEVICES; CONFINEMENT; INELASTIC SCATTERING; INSTABILITY; SCATTERING; THERMONUCLEAR DEVICES; TOKAMAK DEVICES

Optional Information

Secondary number(s)
EUR-JET-PR--6.