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

fYear

1989

fDate

2-6 Oct 1989

Firstpage

1240

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/FUSION.1989.102437

Filename

102437