Development of the high speed pellet injector for ignitor

Author

Frattolillo, A. ; Bombarda, F. ; Migliori, S. ; Capobianchi, M. ; Ronci, G. ; Baylor, L.R. ; Combs, S.K. ; Foust, C.R. ; Meitner, S. ; Fehling, D. ; Coppi, B. ; Roveta, G.

Author_Institution

ENEA C.R. Frascati, Frascati, Italy

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

ENEA and Oak Ridge National Laboratory (ORNL) are collaborating on the development of a four barrel, two-stage pneumatic injector for the Ignitor experiment, featuring two innovative concepts: (i) the proper shaping of the propellant pressure pulse to improve pellet acceleration, and (ii) the use of fast closing (< 10 ms) valves to drastically reduce the expansion volumes of the propellant gas removal system. Two independent sub-systems have been built and tested separately by ENEA and ORNL. The ENEA equipment has then been shipped to Oak Ridge, where testing of the two coupled systems have started during the last year. The results of the first two short experimental campaigns, jointly carried out by ENEA and ORNL teams (May 12-16 and December 15-19 2008), as well as the latest advancement of this project will be reported.

Keywords

Tokamak devices; fusion reactor design; fusion reactor ignition; plasma radiofrequency heating; ENEA; ICRF heating; Oak Ridge National Laboratory; fusion heating rate; high speed pellet injector; ignitor experiment; propellant gas removal system; reactor design; tokamak; two-stage pneumatic injector; Collaboration; Electromagnetic heating; Laboratories; Plasma density; Plasma simulation; Plasma temperature; Propulsion; Pulse shaping methods; Testing; Valves; Ignitor; pellet injector; two-stage gun;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2009. SOFE 2009. 23rd IEEE/NPSS Symposium on

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2635-5

Electronic_ISBN

978-1-4244-2636-2

Type

conf

DOI

10.1109/FUSION.2009.5226406

Filename

5226406