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The fuelling requirements of future magnetic confinement devices for controlled thermonuclear research indicate a need to upgrade the performance (speed, mass, number of pellets) of present day pellet injectors. An experiment in collaboration between ENEA Frascati and ORNL has been started, with the objective of demonstrating a repeating pellet injector capable of delivering D(2) ice pellets at rates around 1 Hz and with speeds in the range of 1 to 3 km/s, using an existing ORNL extruder and a Frascati two-stage gun. This activity will be carried out in the framework of a collaborative agreement between US DOE and Euratom-ENEA Association. The results of numerical simulations and preliminary tests of the two devices are described. The findings of a study on the possibility of minimising the piston wear are also reported.

Additional information

Authors: FRATTOLILLO A ET AL., ENEA, Centro Ricerche Energia Frascati, Roma (IT);COMBS S K ET AL., Oak Ridge National Laboratory (US);CARLEVARO R ET AL., CNPM-CNR (IT)
Bibliographic Reference: Paper presented: IAEA - Technical Committee Meeting on Pellet Injection, Naka (JP), 10- 12/1993
Availability: Available from (1) as Paper EN 37695 ORA
Record Number: 199311315 / Last updated on: 1994-11-28
Original language: en
Available languages: en