TJ-II:Influence of edge radial electric fields on particle and heat in the SOL

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Experimental campaign

2019 Spring

Proposal title

Influence of edge radial electric fields on particle and heat transport in the SOL

Name and affiliation of proponent

Igor Nedzelskiy et al., IST (Lisbon)

Details of contact person at LNF

Carlos Hidalgo

Description of the activity

Turbulence radial spreading controlled by sheared ExB flows has been experimentally identified in TJ-II [1]. The gradual narrowing of the heat flux profile observed from L to I and to H-modes in AUG would be consistent with TJ-II picture [2].

The goal of this proposal is to investigate the influence of edge ExB sheraed flows on SOL particle & heat transport .

International or National funding project or entity

If applicable, enter funding here or write N/A

Description of required resources

Required resources:

  • Number of plasma discharges or days of operation: 2
  • Essential diagnostic systems: RFA, Fast visible & IR cameras, probes
  • Type of plasmas (heating configuration): ECRH & NBI
  • Specific requirements on wall conditioning if any:
  • External users: need a local computer account for data access: yes/no
  • Any external equipment to be integrated? Provide description and integration needs:

Preferred dates and degree of flexibility

Preferred dates: (format dd-mm-yyyy)

References

  1. G. Grenfell et al., Nuclear Fusion59 (2019) 016018
  2. T Happel et al., IAEA-2018

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