Characteristics of pellet injected discharges in TEXTOR

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.49021· OSTI ID:279511

Finken, K H ^[1]; Sato, K N ^[2]; Akiyama, H ^[3]; Fuchs, G; Jaspers, R ^[1]; Kogoshi, S ^[4]; Koslowski, H R; Mank, G ^[1]; Sakakita, H; Sakamoto, M ^[2]; Sander, M; Soltwisch, H ^[1]

---

1. Institut fuer Plasmaphysik, Forschungszentrum Juelich GmbH, Assocition Euratom-KFA, 52425 Juelich (Germany)
2. National Institute for Fusion Science, Nagoya 464-01 (Japan)
3. Kumamoto University, Kumamoto 860 (Japan)
4. Science University of Tokyo, Noda 278 (Japan)

Pellets injected into the TEXTOR tokamak lead to a density profile peaking which is strongest at low plasma current and weakest at high current independent of {ital B}{sub {ital T}}. After the injection two types of density oscillations are excited, the first type follows immediately the injection and the second one is excited with a delay of more than ten milliseconds. The oscillations are also observed in runaway discharges; the synchrotron light from the relativistic electrons drops after the pellet injection and is subsequently modulated due to a trapping of the runaways in magnetic islands. First Faraday measurements have been performed indicating that the distribution of the plasma current is not measurably modified by the pellet. {copyright} {ital 1995 American Institute of Physics.}

• Sponsoring Organization: USDOE
• OSTI ID: 279511
• Report Number(s): CONF-9410130--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 345; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC CURRENTS
OSCILLATIONS
PELLET INJECTION
PLASMA DENSITY
RUNAWAY ELECTRONS
SAFETY
SYNCHROTRON RADIATION
TOKAMAK DEVICES
X RADIATION