TJ-II:Understanding an often observed transient rise in core electron temperature during pellet injection into TJ-II plasmas

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Experimental campaign

2018 Spring

Proposal title

Understanding an often observed transient rise in core electron temperature during pellet injection into TJ-II plasmas

Name and affiliation of proponent

K.J. McCarthy, J.L. Velasco, N. Panadero, J. Hernández, E. de la Cal, Laboratorio Nacional de Fusión, CIEMAT, Spain, N. Tamura, National Institute for Fusion Science, Toki, Japan, M. Calvo, Universidad Politécnica de Madrid, Madrid, Spain


Details of contact person at LNF (if applicable)

Kieran J McCarthy

Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)

A short-lived (≤200 μs) transient rise of core electron temperature has often been observed before an injected pellet is completely ablated by the TJ-II plasma.Cite error: Closing </ref> missing for <ref> tag [1] [2] [3]

If applicable, International or National funding project or entity

FIS2017-89326-R

Description of required resources

Required resources:

  • Number of plasma discharges or days of operation: 2 days
  • Essential diagnostic systems:Thomson Scattering, microwave interferometer, ECE, soft x-rays, and plasma current measurements. Fast-frame camera with fibre-optic bundle.
  • Type of plasmas (heating configuration): ECRH
  • Specific requirements on wall conditioning if any:
  • External users: need a local computer account for data access: no
  • Any external equipment to be integrated? Provide description and integration needs:

Preferred dates and degree of flexibility

Preferred dates: (not available 10-04-2018 to 12-04-2018, 24-04-2018 to 26-04-2018, and 17-05-2018)

References

  1. N Panadero et al, Nucl Fusion 58 (2018) 026025
  2. KJ McCarthy et al, Europhys Lett 120 (2017) 25001
  3. K. J. McCarthy, et al, Proc. 43rd EPS Conference, Leuven, Belgica (2016)

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