Title :
The CIT pellet injection system: Description and supporting research and development
Author :
Gouge, Michael J. ; Combs, Stephen K. ; Fisher, Paul W. ; Milora, Stanley L.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
Abstract :
The Compact Ignition Tokamak (CIT) will use an advanced, high-velocity pellet-injection system to achieve and maintain ignited plasmas. Two pellet injectors are provided: a highly reliable moderate-velocity (1- to 1.5-km/s), single-stage pneumatic injector, and a high-velocity (4- to 5-km/s), two-stage pellet injector that uses frozen hydrogenic pellets encased in sabots. Both pellet injectors are qualified for operation with tritium feed gas. Issues such as performance, neutron activation of injector components, maintenance, design of the pellet-injection vacuum line, gas loads to the reprocessing system, and equipment layout are discussed. Results and plans for supporting research and development (R&D) in the areas of tritium-pellet fabrication and high-velocity, repetitive two-stage pneumatic injectors are presented
Keywords :
Tokamak devices; fusion reactor fuel; fusion reactor theory and design; maintenance engineering; materials preparation; pneumatic systems; tritium; vacuum apparatus; 1000 to 1500 m/s; 4000 to 5000 m/s; CIT; Compact Ignition Tokamak; T pellet fabrication; frozen hydrogenic pellets; gas loads; injector components; maintenance; neutron activation; pellet injection system; pellet-injection vacuum line; performance; repetitive two-stage pneumatic injectors; reprocessing system; Fabrication; Guns; Ignition; Laboratories; Maintenance; Plasma density; Plasma temperature; Reliability; Research and development; Tokamaks;
Conference_Titel :
Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on
Conference_Location :
Knoxville, TN
DOI :
10.1109/FUSION.1989.102437
