Varification and Validation (VV) of energetic particle (EP)
      driven
      instabilities
    
      Summarized by N.N. Gorelenkov (PPPL) for PEPSC
        project and for ITPA code benchmarking initiative
    
    Here we document verification and validation of various cases
    computed
    with NOVA, GKM0
    and other codes between 
    themselves and theory if possible. 
    
    1) simple linear benchmark cases
        We start with linear TAE
    n=1 problem, which
    shows good agreement between 
        NOVA-K and a theory. 
           -
      comparison with NOVA results is done by Y. Todo using MEGA
      code using the same 
            
slowing
      down distribution function to the one used in NOVA simulations.
          
-
      comparison using TAEFL code is done by D. Spong.
    
       
    Another case is still linear TAE but
    for
    n=2, for which comparison is also good. 
    
           -
      comparison using TAEFL code is done by D. Spong.
    
    2) "simple" nonlinear single mode saturation benchmark
      case.
         this case is described in this paper and is being
    updated for detailed documentation. 
         Its initial version is set up in January
    2009.
         -
      benchmark
      withHMGC
      code was also reported by S.
      Briguglio
    
    4) theory VV is being reported in the following paper where NOVA
    equations were carefully analyzed and RSAE solution was found.
    
    @article{GorelenkovPPCF06RSAE,
    AUTHOR = "N.N. Gorelenkov and G.J. Kramer and R. Nazikian",
    TITLE = "Interpretation of the finite pressure gradient effects in
    the reversed shear \protect{Alfv\'{e}}n eigenmode theory",
    JOURNAL = "Plasma Phys. Control. Fusion",
    VOLUME = "48",
    PAGES = "1255--1269",
    MONTH = "August",
    YEAR = "2006" }
    
    
    3) most recent comparisons relevant to NOVA(-K) VV efforts were
    presented at the IAEA conferences:
    
    S. Günter, D. Borba, A. Fasoli et al., Proceedings of the 23rd IAEA Fusion Energy Conference, Daejon, Korea, 2010, IAEA-CN-180/THW/P7-08. 
    
    
    
    
    A. Könies, S. Briguglio, N.N. Gorelenkov et al., Proceedings of the 24th IAEA Fusion Energy Conference, San Diego, USA, 2012, F1-CN-197/ITR/P1-34.