constraint_variables

p_hcd_injected_min_mw = None module-attribute

minimum auxiliary power (MW) (constraint equation 40)

beta_poloidal_max = None module-attribute

maximum poloidal beta (constraint equation 48)

big_q_plasma_min = None module-attribute

minimum fusion gain Q (constraint equation 28)

b_tf_inboard_max = None module-attribute

maximum peak toroidal field (T) (constraint equation 25)

fdene = None module-attribute

Scaling value for density limit (constraint equation 5)

fradpwr = None module-attribute

Scaling value for radiation power upper limit (constraint equation 17)

fiooic = None module-attribute

Constraint margin for TF coil operating current / critical current ratio (constraint equation 33)

q95_fixed = None module-attribute

fixed safety factor q at 95% flux surface (constraint equation 68)

fjohc = None module-attribute

Constraint margin for central solenoid current at end-of-flattop (constraint equation 26)

fjohc0 = None module-attribute

Constraint margin for central solenoid current at beginning of pulse (constraint equation 27)

eta_cd_norm_hcd_primary_max = None module-attribute

maximum current drive gamma (constraint equation 37)

i_q95_fixed = None module-attribute

Switch that allows for fixing q95 only in this constraint equation 68. (constraint equation 68)

pflux_fw_rad_max = None module-attribute

Maximum permitted radiation wall load (MW/m^2) (constraint equation 67)

mvalim = None module-attribute

maximum MVA limit (constraint equation 19)

f_p_beam_shine_through_max = None module-attribute

maximum neutral beam shine-through fraction (constraint equation 59)

nflutfmax = None module-attribute

max fast neutron fluence on TF coil (n/m2) (blktmodel>0) (constraint equation 53) Also used for demontable magnets (itart = 1) and superconducting coils (i_tf_sup = 1) and quench protection To set the CP lifetime (constraint equation 85)

p_plasma_separatrix_min_mw = None module-attribute

Minimum p_plasma_separatrix_mw [MW] (constraint equation 80)

f_fw_rad_max = None module-attribute

peaking factor for radiation wall load (constraint equation 67)

pflux_fw_rad_max_mw = None module-attribute

Peak radiation wall load (MW/m^2) (constraint equation 67)

p_plant_electric_net_required_mw = None module-attribute

required net electric power (MW) (constraint equation 16)

p_fusion_total_max_mw = None module-attribute

maximum fusion power (MW) (constraint equation 9)

psepbqarmax = None module-attribute

maximum ratio of Psep*Bt/qAR (MWT/m) (constraint equation 68)

pseprmax = None module-attribute

maximum ratio of power crossing the separatrix to plasma major radius (Psep/R) (MW/m) (constraint equation 56)

ptfnucmax = None module-attribute

maximum nuclear heating in TF coil (MW/m3) (constraint equation 54)

tbrmin = None module-attribute

minimum tritium breeding ratio (constraint equation 52)

t_burn_min = None module-attribute

minimum burn time (s) (KE - no longer itv., see issue #706)

t_cycle_min = None module-attribute

minimum cycle time (s) (constraint equation 42)

t_current_ramp_up_min = None module-attribute

minimum plasma current ramp-up time (s) (constraint equation 41)

pflux_fw_neutron_max_mw = None module-attribute

allowable neutron wall-load (MW/m2) (constraint equation 8)

f_alpha_energy_confinement_min = None module-attribute

Lower limit on f_alpha_energy_confinement the ratio of alpha particle to energy confinement times (constraint equation 62)

zeff_max = None module-attribute

maximum value for Zeff (constraint equation 64)

f_h_mode_margin = None module-attribute

Sets the constraint bound of the L-H power threshold limit for H-mode

I.e. p_plasma_separatrix_mw / p_l_h_threshold_mw >= f_h_mode_margin

f_l_mode_margin = None module-attribute

Sets the constraint bound of the L-H power threshold limit.

I.e. p_l_h_threshold_mw / p_plasma_separatrix_mw >= f_l_mode_margin

init_constraint_variables()

Initialise the constraint variables

Source code in process/data_structure/constraint_variables.py

def init_constraint_variables():
    """Initialise the constraint variables"""
    global \
        p_hcd_injected_min_mw, \
        beta_poloidal_max, \
        big_q_plasma_min, \
        b_tf_inboard_max, \
        fdene, \
        fradpwr, \
        fiooic, \
        q95_fixed, \
        fjohc, \
        fjohc0, \
        eta_cd_norm_hcd_primary_max, \
        i_q95_fixed, \
        pflux_fw_rad_max, \
        mvalim, \
        f_p_beam_shine_through_max, \
        nflutfmax, \
        p_plasma_separatrix_min_mw, \
        f_fw_rad_max, \
        pflux_fw_rad_max_mw, \
        p_plant_electric_net_required_mw, \
        p_fusion_total_max_mw, \
        psepbqarmax, \
        pseprmax, \
        ptfnucmax, \
        tbrmin, \
        t_burn_min, \
        t_cycle_min, \
        t_current_ramp_up_min, \
        pflux_fw_neutron_max_mw, \
        f_alpha_energy_confinement_min, \
        zeff_max, \
        f_l_mode_margin, \
        f_h_mode_margin

    p_hcd_injected_min_mw = 0.1
    beta_poloidal_max = 0.19
    big_q_plasma_min = 10.0
    b_tf_inboard_max = 12.0
    fdene = 1.0
    fradpwr = 1.0
    fiooic = 0.7
    q95_fixed = 3.0
    fjohc = 0.7
    fjohc0 = 0.7
    eta_cd_norm_hcd_primary_max = 2.0
    i_q95_fixed = 0
    pflux_fw_rad_max = 1.0
    mvalim = 40.0
    f_p_beam_shine_through_max = 1e-3
    nflutfmax = 1.0e23
    p_plasma_separatrix_min_mw = 150.0
    f_fw_rad_max = 3.33
    pflux_fw_rad_max_mw = 0.0
    p_plant_electric_net_required_mw = 1.0e3
    p_fusion_total_max_mw = 1.5e3
    psepbqarmax = 9.5
    pseprmax = 25.0
    ptfnucmax = 1e-3
    tbrmin = 1.1
    t_burn_min = 1.0
    t_cycle_min = 0.0
    t_current_ramp_up_min = 1.0
    pflux_fw_neutron_max_mw = 1.0
    f_alpha_energy_confinement_min = 5.0
    zeff_max = 3.6
    f_l_mode_margin = 1.0
    f_h_mode_margin = 1.0