Author: John Anthony GoetzPublisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Power Balance and Scaling of the Radiated Power in the Divertor and Main Plasma of Alcator C-Mod
Author: John Anthony GoetzScaling of Plasma Parameters in the SOL and Divertor for Alcator C-Mod
Author: Brian LaBombardMetals Abstracts
Author: Comparison of Detached and Radiative Divertor Operation in Alcator C-Mod
Author: John Anthony GoetzFusion Science and Technology
Author: INIS Atomindex
Author: Comments on Particle and Energy Balance in the Edge Plasma of Alcator C-Mod
Author: Maxim V. UmanskyDensity Limit and Cross-field Edge Transport Scaling in Alcator C-Mod
Author: Brian LaBombardPublisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
Recent experiments in Alcator C-Mod have uncovered a direct link between the character and scaling of cross-field particle transport in the edge plasma and the density limit, nG. As ne/nG is increased from low values to values approaching [approx.] 1, an ordered progression in the cross-field edge transport physics occurs: first benign cross-field heat convection, then cross-field heat convection impacting the scrape-off layer (SOL) power loss channels and reducing the separatrix electron temperature, and finally 1bursty2 transport (normally associated with the far SOL) invading into closed flux surface regions and carrying a convective power loss that impacts the power balance of the discharge. These observations suggest that SOL transport and its scaling with plasma conditions plays a key role in setting the empirically observed density limit scaling law.
Performance of the Alcator C-Mod Closed Divertor in Ohmically Heated Plasmas
Author: James L. TerryObservations of Cold, High Density Plasma in the Private Flux Region of the Alcator C-Mod Divertor
Author: Christopher James BoswellPublisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Significant plasma density has been observed in the private flux zone of the Alcator C-Mod tokamak. The behavior of the Dg emission profiles is consistent with the source of the plasma being due to an E x B drift generated by a poloidal temperature gradient. The plasma flux due to this drift is derived and evaluated. A plasma flux into the private flux zone is inferred by measurements of volumetric recombination using a tangentially viewing CCD camera and several spectroscopic views observing the high n-lines of the Do Balmer series. For the case of an attached divertor the inferred plasma flux to the PFZ has a linear scaling with respect to plasma pressure, as is expected from the temperature-gradient-induced, E x B drift.