GAS AND PELLET FUELING IN ITER

Citation
H. Nakamura et al., GAS AND PELLET FUELING IN ITER, Vacuum, 47(6-8), 1996, pp. 969-971
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
VacuumACNP
ISSN journal
0042207X
Volume
47
Issue
6-8
Year of publication
1996
Pages
969 - 971
Database
ISI
SICI code
0042-207X(1996)47:6-8<969:GAPFII>2.0.ZU;2-J
Abstract
This paper presents design considerations for gas and pellet fuelling in ITER. Typical machine performance is 1.5 GW of fusion power for 100 0 s of DT burn. The fuelling system consists of gas and pellet injecti on. The maximum DT fuelling rate is 500 Pa m(3)/s during a plasma dens ity rise and 200 Pa m(3)/s during steady state DT burn. Impurity gas ( e.g. Ne, Ar) will also be injected to control divertor radiation losse s. The plasma exhaust is designed for a neutral pressure of 0.1-10 Pa at the inlet of the pumping duct Total net pumping speed of the cryoge nic primary pumps is about 300 m(3)/s. Up to 90% of the regenerated fu el gases (H,D,T) from the primary cryopump will be returned directly t o the plasma. Copyright (C) 1996 Elsevier Science Ltd.