Propellant-gas handling and pellet diagnostics of the TEXTOR pellet injector system
A nine-barrel gas gun type pellet injector is being prepared for TEXTOR. A new propellant gas handling system has been built and successfully tested. This avoids the disadvantages of using long guiding tubes for the pellets or having differential pumping systems with voluminous expansion tanks. The system described uses for each pellet gun a combination of a muzzle brake, two fast closing valves and three small expansion volumes of one litre or less. The mass of the propellant gas of 0.3 bar l released from each barrel is reduced by this system to a value of 1.0 E-2 mbar l, i.e. less than 1% of the pellet mass. The whole gas handling system consists of nine such muzzle/valve combinations, equally distributed on a circle like the nine gas gun arrangement. The volume of the system is similar to that of the compact cryostat with its nine pellet injection lines.
Bibliographic Reference: Article: Fusion Technology 1990, Vol. 1 (1991) pp. 762-766
Record Number: 199111191 / Last updated on: 1994-12-02
Original language: en
Available languages: en