RABBIT

Contacts: Oak Nelson

Short Description

Efficient computation of NBI fast-ion distribution

Keywords

NBI, fast-ion , experiment

Long Description

This OMFIT module runs the RABBIT code from a specified DIII-D shot. Inputs can either be automatically gathered from zipfit and MDS+, or manually assembeled from related modules.

RABBIT is capable of computing the NBI fast-ion distribution in real-time. It uses a simplified beam geometry to calculate the beam attenuation. Finite-orbit-width effects are taken into account by an orbit average of the beam deposition. The time-dependent solution of the Fokker-Planck equation (2D in velocity) is then calculated based on analytic expressions. This code currently takes about 25ms per time step, which is roughly a factor of 1000 faster than the more sophisticated NUBEAM code. Nevertheless, good agreement between both codes is found in a comprehensive benchmark.

Please cite the publications below if using RABBIT in your workflow. Your recognition of the work that went into this is much appreciated.

Typical workflows

• Generation of beam output files from zipfit equilibira using RABBIT

Supported devices

• DIII-D

Relevant publications

• M. Weiland, R. Bilato, R. Dux, B. Geiger, A. Lebschy, F. Felici ,R. Fischer, D. Rittich, M. van Zeeland, the ASDEX Upgrade Team and the Eurofusion MST1 Team, Nuclear Fusion Vol. 58, 082032, 2018

• M. Weiland, R. Bilato, C.S. Collins, W.W. Heidbrink, D. Liu, M.A. Van Zeeland, the ASDEX Upgrade, DIII-D, Eurofusion MST Teams and JET Contributors, Nuclear Fusion Vol. 59, 086002, 2019

Classes

• omfit_classes.omfit_eqdsk.OMFITgeqdsk()

• omfit_classes.omfit_mds.OMFITmdsValue()

• omfit_classes.omfit_mds.OMFITmds()

• omfit_classes.omfit_namelist.OMFITnamelist()

• omfit_classes.omfit_rabbit.OMFITrabbitBeamin()

• omfit_classes.omfit_rabbit.OMFITrabbitBeamout()

• omfit_classes.omfit_rabbit.OMFITrabbitEq()

• omfit_classes.omfit_rabbit.OMFITrabbitTimetraces()

Contributors

List of contributors sorted by number of lines authored:

1333 Oak Nelson
 149 Fusion Bot
 132 Joseph McClenaghan
  59 Tim Slendebroek
  41 Sterling Smith
   9 Orso Meneghini
   1 Brian Grierson
   1 Brendan Lyons

Submodules

• DIII-D_BEAMS

• EFITtime

Users

List of usernames sorted by number of module imports: nelsonand, eldond, hansonm, abbatej, collinscs, denk, duxiaodi, jorge, mcclenaghanj, weilandm