Abstract
Continued operation of the tokamak fusion test reactor (TFFR) with a mixture of deuterium and tritium fueling has permitted the opportunity to measure the retention of tritium in the graphite limiter and to investigate the use of discharge cleaning techniques and venting to remove the tritium. The tritium was introduced into TFTR by neutral beam injection and by gas puffing. The limiter is subject to erosion and codeposition. While short term retention was high, the retention averaged over the 1993-1995 D-T campaign was 52 ± 15%. The tritium removal techniques resulted in lowering the in-vessel inventory from 16.4 kCi (1 Ci = 2.076 × 1019 tritium atoms and 10 kCi = 1.04 g) at the end of 1995 operation to 7.2 kCi at the start of the 1996 experimental program.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 897-901 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 241-243 |
| DOIs | |
| State | Published - Feb 11 1997 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- General Materials Science
- Nuclear Energy and Engineering
Keywords
- Erosion and particle deposition
- Fusion
- Technology
- TFTR
- Tokamak
- Tritium inventory and economy