Particle recirculation studies in JET

Tsitrone, E.; Bucalossi, J.; Loarer, T.; Ghendrih, P.; Loarte, A.; Andrew, P.; Coad, P.; Fundamenski, W.; Stamp, M.; Coster, D.; EFDA-JET Work Programme Collaborators,

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Particle recirculation studies in JET

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Coster, D.
Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society;

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Tsitrone, E., Bucalossi, J., Loarer, T., Ghendrih, P., Loarte, A., Andrew, P., et al. (2002). Particle recirculation studies in JET. Plasma Physics and Controlled Fusion, 44(6), 701-715.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-4111-D

Abstract

A global particle balance analysis has been applied to a variety of L-mode and H-mode deuterium discharges of the C4 campaign of JET, performed at a lower wall temperature, in different magnetic configurations and with various divertor gas puffing location. Wall retention and divertor particle exhaust are discussed as a function of the plasma configuration, the wall temperature and the gas puffing location. The effect on ELMs frequency is also mentioned. A simple empirical law linking the divertor pressure and the Dalpha signal integrated on the divertor is derived, which allows one to estimate the inner and outer contribution to pumping.