Lower Hybrid Current Drive

1. redirect Alcator_C-Mod#Lower_hybrid_current_drive {{R with possibilities}}

Maybe describe in tokamak ?

[https://www.euro-fusion.org/glossary/lower-hybrid-heating/] says "Heating produced by a lower hybrid wave; a plasma wave of frequency between the ion and electron cyclotron frequencies. It has a component of electric field parallel to the magnetic field, so it can accelerate electrons moving along the field lines."