Data · dataset · 2022
The Achievement of the Te, div feedback control by CD4 seeding on EAST
Listed in ScienceDB
A multi-function divertor feedback control system has been built on EAST to treat the divertor heat load issue.
Description
With the real-time data of the Langmuir probes and the impurity seeding, the divertor electron temperature (Te, div) is well controlled to achieve the partial detachment phase. The first trial of the CD4 seeding for the Te, div reduction has been achieved on EAST long-pulse discharge.
In the seeding phase, the Te, div was maintained close to 5eV, and the surface temperature of the target plate (Tsurface, div) had a reduction of about 150℃. The plasma stored energy had a reduction in the control phase, so it is necessary to find a way to keep the good plasma confinement in the next step. The CD4 injection also mitigated the low hybrid wave (LHW) coupling rate in some degree.
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The big volume of the CD4 injection lifted the Greenwald density fraction from ~0.4 to ~0.7, which made the SOL into high recycling state. Most of the injected carbon particles were in the high ionized state, and with the lower of the Te, div, the tungsten line emission was suppressed obviously.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.05668 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.05668 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |