Medium Power Converters Section

Tag: prefunction

  • Highly saturating magnets and pre-functions

    Highly saturating magnets and pre-functions

    The duration of a pre-function is "predicted" by the FGC doing a basic calculation dt= (L*di)/(V+RI) and hence the FGC knows when to start the pre-function in order to arrive on-time for the beam extraction. However, in case when a heavy magnet saturation takes place (typically at high current only), the calculation is not correct

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  • REF.CYC.STATUS gives PRE_FUNC_WRN

    REF.CYC.STATUS gives PRE_FUNC_WRN

    The pre-function error (in seconds) is given using the G REF.CYC.PRE_FUNC_ERR(#usr). This value returns the difference between a theoretical pre-function time and the actual pre-function the fgc managed to play in the time available. The theoretical value is calculated by adding the calculated times of ramping up, the duration of the MAGCYCLE plateau (REF.DEFAULTS.PLATEAU_DUR[0]), any

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