User:Esolano

Personal Information

• Name : Emilia R. Solano (Emilia Rodríguez-Solano Rineiro)
• Address: Asociación EURATOM-CIEMAT para Fusión, Av. Complutense 22, E-28040 Madrid, España
• email: emilia.solano at ciemat.es

Interests

Theory and Applied Theory in Plasma Physics

• Equilibrium in tokamaks: the Grad-Shafranov equation
• Critical equilibria in tokamaks and confinement regimes
• Neoclassical theory in stellarators and tokamaks

JET experimental studies

Study of high temperature pedestals

Specific experiments were made at JET to study high temperature pedestals, in the range Te_ped ~2.5-5 keV. The idea was to see if the ELMs link title are qualitatively different when resistivity and collisionality are low. The surprising result of the experiment was a new insight on pedestal stability: with low gas fuelling and low recycling conditions (required to achieve high temperature pedestals) an Outer Mode often appears, delaying ELMs. The outer mode had been assumed to be an ideal kink, unstable in the steep gradient region of the pedestal, which would eventually grow into an ELM. We have now found that the outer mode is a fairly stable current ribbon, lasting as much as 1.5 s, located at the top of the pedestal. There are tantalising similarities with the EHO observed in DIII-D. This could provide a new route to ELM-free operation.

1. Observation of confined current ribbon in JET plasmas, to be published in PRL May 2010
2. Summary of the Workshop on Electric Fields, Turbulence and Self-organization in Magnetized Plasmas (EFTSOMP) 2009: 6–7 July 2009, Sofia, Bulgaria S. Zoletnik et al 2010 Nucl. Fusion 50 047001
3. High Temperature Pedestals in JET and confined current filaments E.R. Solano et al EPS 2010 Oral

Study of ELMs (Edge Localised Modes)

Pedestal width and ELM size identity studies in JET and DIII-D; implications for ITER M N A Beurskens et al. 2009 Plasma Phys. Control. Fusion 51 124051

• Study of transport barrier formation

Plasma evolution towards transport barrier formation

Tokamak Design

• TEXT Upgrade: calculations for design of diverted plasma and corresponding divertor coils, mostly based on filament models of the plasma:
  • electromagnetic forces and insulation rwquirements on coils in steady operation and during disruptions,
  • power supply requirements for plasma position control,
  • effect of iron transformer on plasma stability
  • adapted EFIT code to be used in tokamaks with non-satured iron core.

• USTX: the University Spherical Tokamak Experiment design proposal: all of the above, now with predictive EFIT,
  • additional shape control requirements due to effect of transformer currents on inboard plasma gap.
  • stability analysis with DCON
  • design of field null for efficient startup

Publications list

First author publications

1. Observation of confined current ribbon in JET plasmas,E.R. Solano et al., Phys. Rev. Lett. 104, 185003 (2010)
2. High Temperature Pedestals in JET and confined current filaments, E. R. Solano et al., E.R. Solano et al EPS 2010 Oral
3. ELMs and strike point movements, Emilia R. Solano et al 2008 Nucl. Fusion 48 065005
4. Criticality of the Grad–Shafranov equation: transport barriers and fragile equilibria by Emilia R Solano 2004 Plasma Phys. Control. Fusion 46 L7

Named author in JET publications

1. Summary of the Workshop on Electric Fields, Turbulence and Self-organization in Magnetized Plasmas (EFTSOMP) 2009: 6–7 July 2009, Sofia, Bulgaria S. Zoletnik et al 2010 Nucl. Fusion 50 047001
2. Pedestal width and ELM size identity studies in JET and DIII-D; implications for ITER, M N A Beurskens et al. 2009 Plasma Phys. Control. Fusion 51 124051
3. Pedestal and ELM response to impurity seeding in JET advanced scenario plasmas, M.N.A. Beurskens et al. 2008 Nucl. Fusion 48 095004
4. Overview of JET results J. Paméla , Emilia R. Solano and JET EFDA Contributors Nucl. Fusion 43 1540
5. Overview of results and possibilities for fast particle research on JET J. Pamela , et al., 2002 Nucl. Fusion 42 1014
6. The formation and evolution of extreme shear reversal in JET and its influence on local thermal transport N C Hawkes et al., 2002 Plasma Phys. Control. Fusion 44 1105

Named author in TJ-II publications

1. Confinement transitions in TJ-II under Li-coated wall conditions, J. Sánchez et al., 2009 Nucl. Fusion 49 104018

Named author in DIII-D publications

1. Formation, sustainment and characteristics of current hole plasmas in DIII-D discharges, R.J. Jayakumar et al., 2008 Nucl. Fusion 48 015004