pynrc.simul.ngNRC.gen_wfe_drift

pynrc.simul.ngNRC.gen_wfe_drift(obs_input, case='BOL', iec_period=300, slew_init=10, rand_seed=None, t0_offset=False, plot=False, figname=None)[source]

Create WFE drift information over time

Parameters

  • obs_input (DMS_input class) – Class to generate a series of observation dictionaries in order to build DMS-like files. Loads APT files to generate the necessary observation information.

  • case (string) – Either “BOL” for current best estimate at beginning of life, or “EOL” for more conservative prediction at end of life.

  • iec_period (float) – IEC heater switching period in seconds.

  • slew_init (float) – Assumed slew difference relative to previous program

  • rand_seed (None or int) – Seed value to initialize random number generator to obtain repeatable values.

  • t0_offset (bool) – Shift delta WFE drift values to 0 at time t=0 (beginning of program)? If set to False, then relative drift values correspond to beginning of the previous randomly-generated program.

  • plot (bool) – Create a plot of the slew angles and associated RMS drift components.

  • figname (string) – Output name (path) to save plot figure.