DocumentCode
988042
Title
TRAIL: A Tokamak rail gun limiter for fusion reactors
Author
Powell, James R. ; Yu, Wen-shi ; Fillo, John A. ; Usher, John L.
Author_Institution
Brookhaven National Laboratory, Upton, Long Island, NY, USA
Volume
18
Issue
1
fYear
1982
fDate
1/1/1982 12:00:00 AM
Firstpage
197
Lastpage
208
Abstract
An attractive new limiter concept is investigated. The Tokamak Rail Gun Limiter (TRAIL) system impacts a stream of moderate velocity pellets (100 to 200 m/sec through the plasma edge region to absorb energy and define the plasma boundary. The pellets are recycled, after cooling, to the injector in an E-M mass accelerator. Heat fluxes of 
W/cm2can be readily accommodated by the pellets, with very low recirculating power requirements (∼0.1%) for the accelerator. The mass accelerator velocity requirements are well within the present state-of-the-art (several km/ see). Accelerators injecting pellets at ∼1 km/sec can be used to control local plasma temperature and current profiles and to act as energy absorbers to shut down the plasma without damage to the first wall if a plasma disruption occurs.
W/cm2can be readily accommodated by the pellets, with very low recirculating power requirements (∼0.1%) for the accelerator. The mass accelerator velocity requirements are well within the present state-of-the-art (several km/ see). Accelerators injecting pellets at ∼1 km/sec can be used to control local plasma temperature and current profiles and to act as energy absorbers to shut down the plasma without damage to the first wall if a plasma disruption occurs.Keywords
Electromagnetic propulsion; Tokamaks, superconducting magnets; Acceleration; Fusion reactors; Plasma accelerators; Plasma materials processing; Plasma temperature; Projectiles; Rails; Temperature control; Tokamaks; Water heating;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1982.1061813
Filename
1061813
Link To Document