skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A compact flexible pellet injector for the TJ-II stellarator

Abstract

A compact pellet injector is being built for the TJ-II stellarator. It is an upgraded version of the 'pellet injector in a suitcase' developed at Oak Ridge National Laboratory and installed on the Madison Symmetric Torus where it continues to be used in many plasma experiments. The design aim is to provide maximum flexibility at minimal cost, while allowing for future upgrades. It is a four-barrel system equipped with a cryogenic refrigerator for in situ hydrogen pellet formation, a combined mechanical punch/propellant valve system, pellet diagnostics, and an injection line, destined for use as an active diagnostic and for fueling. In order to fulfill both objectives it will be sufficiently flexible to permit pellets, with diameters from 0.4 to 1 mm, to be fabricated and accelerated to velocities from 150 to {approx}1000 m s{sup -1}.

Authors:
;  [1]; ; ; ; ; ; ;  [2]
  1. Laboratory Nacional de Fusion, CIEMAT, Av. Complutense 22, 28040 Madrid (Spain)
  2. Oak Ridge National Laboratory, P.O. Box 2009, Oak Ridge, Tennessee 37831-8071 (United States)
Publication Date:
OSTI Identifier:
21266639
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 79; Journal Issue: 10; Conference: HTPD08: 17. topical conference on high-temperature plasma diagnostics, Albuquerque, NM (United States), 11-15 May 2008; Other Information: DOI: 10.1063/1.2955706; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DESIGN; FLEXIBILITY; HYDROGEN; ORNL; PELLETS; PLASMA; PLASMA CONFINEMENT; STELLARATORS; THERMONUCLEAR REACTOR MATERIALS; THERMONUCLEAR REACTORS; VALVES

Citation Formats

McCarthy, K J, Carmona, J M, Combs, S K, Baylor, L R, Caughman, J B. O., Fehling, D T, Foust, C R, McGill, J M, and Rasmussen, D A. A compact flexible pellet injector for the TJ-II stellarator. United States: N. p., 2008. Web. doi:10.1063/1.2955706.
McCarthy, K J, Carmona, J M, Combs, S K, Baylor, L R, Caughman, J B. O., Fehling, D T, Foust, C R, McGill, J M, & Rasmussen, D A. A compact flexible pellet injector for the TJ-II stellarator. United States. https://doi.org/10.1063/1.2955706
McCarthy, K J, Carmona, J M, Combs, S K, Baylor, L R, Caughman, J B. O., Fehling, D T, Foust, C R, McGill, J M, and Rasmussen, D A. 2008. "A compact flexible pellet injector for the TJ-II stellarator". United States. https://doi.org/10.1063/1.2955706.
@article{osti_21266639,
title = {A compact flexible pellet injector for the TJ-II stellarator},
author = {McCarthy, K J and Carmona, J M and Combs, S K and Baylor, L R and Caughman, J B. O. and Fehling, D T and Foust, C R and McGill, J M and Rasmussen, D A},
abstractNote = {A compact pellet injector is being built for the TJ-II stellarator. It is an upgraded version of the 'pellet injector in a suitcase' developed at Oak Ridge National Laboratory and installed on the Madison Symmetric Torus where it continues to be used in many plasma experiments. The design aim is to provide maximum flexibility at minimal cost, while allowing for future upgrades. It is a four-barrel system equipped with a cryogenic refrigerator for in situ hydrogen pellet formation, a combined mechanical punch/propellant valve system, pellet diagnostics, and an injection line, destined for use as an active diagnostic and for fueling. In order to fulfill both objectives it will be sufficiently flexible to permit pellets, with diameters from 0.4 to 1 mm, to be fabricated and accelerated to velocities from 150 to {approx}1000 m s{sup -1}.},
doi = {10.1063/1.2955706},
url = {https://www.osti.gov/biblio/21266639}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 79,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2008},
month = {Wed Oct 15 00:00:00 EDT 2008}
}