authors
- GARCIA GONZALO, LUIS
- GARCIA CORTES, MARIA ISABEL
- CARRERAS VERDAGUER, BENJAMIN A.
- McCarthy, K. J.
- van Milligen, B. Ph
The effect of pellet injection on turbulent transport in TJ-II
Articles
Overview
published in
- PHYSICS OF PLASMAS Journal
publication date
- September 2023
issue
- 9
volume
- 30
Digital Object Identifier (DOI)
International Standard Serial Number (ISSN)
- 1070-664X
Electronic International Standard Serial Number (EISSN)
- 1089-7674
abstract
- An improvement in confinement associated with the injection of pellets has been observed in TJ-II and other devices. By means of a simple model, we study here the modification of turbulent transport by the injection of pellets in TJ-II and how this modification affects the particle confinement time. The analysis of the results shows the relationship of the confinement improvement with the evolution of the shear flow due to turbulence, especially near low order rational surfaces. This work is based on pellet injections into the neutral beam injection heated phase of TJ-II plasmas. For this, single, double, or triple hydrogen pellet injection are considered and the post-injection evolution of selected plasma parameters are analyzed and compared.