Loading pressure from Thompson scattering and CHERS on NSTX

[odstrcilt]

Is it possible to load pressure from TS and CHERS on NSTX? I have check the file /omas/machine_mappings/nstxu.py and it is all about magnetics

[smithsp]

No Thomson or CHERS seen in https://github.com/gafusion/omas/blob/master/omas/machine_mappings/nstxu.py .

[smithsp]

Fetching scripts for Thomson already exist in EFITtime and OMFITprofiles in OMFIT. @odstrcilt and @avdeevag to post links to them here. @jmcclena to try to port.

[odstrcilt]

@jmcclena here is what needs to be loaded for Te and ne from MDS+ on NSTX

        TS_MDS = '\\ACTIVESPEC::TOP.MPTS.OUTPUT_DATA.BEST.'
        ne = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_NE').data()
        ne_err = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_NE_ERR').data()
        te = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_TE').data() * 1e3  # eV
        te_err = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_TE_ERR').data() * 1e3  # eV
        R = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_RADII').data() * 1e-2  # m
        time = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'TS_TIMES').data() * 1e3  # ms

or the pressure can be loaded directly as

        pe = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_PE').data()
        pe_err = OMFITmdsValue(server='NSTX', treename='ACTIVESPEC', shot=shot, TDI=TS_MDS + 'FIT_PE_ERR').data()

[smithsp]

There was some confusion about the use of FIT_, but it seems that these are the raw data points that we have been fetching in OMFITprofiles since fetching of TS was implemented 7 years ago by @orso82 https://github.com/gafusion/OMFIT-source/blame/622173f49daef1353328bc9718ba94d769be864b/modules/OMFITprofiles/SCRIPTS/NSTX/FETCH/raw_TS.py

[avdeevag]

Apparently spline fitting in NSTX MDS+ tree has a SPLINE in nodename

[smithsp]

Thanks for finding that @avdeevag .

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