Poster, 2021, ENG

Helium Doped Plasmas on FTU

Mazzotta C.; Pucella G.; Giovannozzi E.; Apruzzese G.; Boncagni L.; Carraro L.; Castaldo C.; Ceccuzzi S.; Cesaroni S.; Cianfarani C.; Claps G.; Coppi B.; D'Arcangelo O.; Di Troia C.; Esposito B.; Gabellieri L.; Iafrati M.; Maddaluno G.; Marinucci M.; Palomba S.; Puiatti M.E.; Romano A.; Senni L.; Tudisco O.; Zotta V.K.; FTU Team

ENEA, Fusion and Nuclear Safety Department C. R. Frascati, Rome, Italy; Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Padova, Italy; CNR ISTP, Istituto per la Scienza e Tecnologia dei Plasmi, Sede di Padova, Italy; Università di Roma Tor Vergata, Department of Industrial Engineering, Rome, Italy; Massachusetts Institute of Technology Cambridge, MA USA; Sapienza Università di Roma, Department of Astronautical, Electrical and Energy Engineering, Rome, Italy.

On FTU some sessions have been performed by injecting Helium gas on the L-mode plasmas, in order to extend previous observations about Neon doping already reported. Not only the total amount of Helium, but also rate of injection intervenes in triggering a particle inflow; It's possible to reach the value of 5 in the electron density peaking. VUV spectroscopy measurements help to evaluate the Helium ionization, a model to estimate concentrations of impurities is proposed for the first time. The Helium effect on plasma behavior and edge conditioning is exposed.

FEC 2020 - 28th IAEA Fusion Energy Conference, Virtual Event Europe/Vienna timezone, 10-15 May 2021

Keywords

Helium doped plasmas, FTU

CNR authors

Carraro Lorella

CNR institutes

ISTP – Istituto per la Scienza e Tecnologia dei Plasmi