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Pellet Injection Technology and Its Applications on ITER...

Publication Type
Conference Paper
Journal Name
IEEE Transactions on Plasma Science
Publication Date
Page Numbers
1489 to 1495
Conference Name
Symposium on Fusion Engineering (SOFE 2015)
Conference Location
Austin, Texas, United States of America
Conference Sponsor
Conference Date

Cryogenic pellet injectors for use in fusion research have been under development at Oak Ridge National Laboratory for over 30 years. The original application of the technology was to add fuel to magnetically confined plasmas to replace D-T ions that are consumed in the fusion reactions or lost due to transport out of the confining magnetic fields. This application is still the primary use for pellet injection and is planned for implementation on the ITER burning plasma experiment. More recently, there have been additional applications for the injection of cryogenic pellets in the areas of disruption and edge-localized mode mitigation. Injectors for these applications are also being implemented for ITER, which require refinements of the technology for production and shattering of very large pellets and production of very small high repetition rate pellets, respectively. Details of these applications and injection system designs are presented.