tfcoil_variables
Module containing global variables relating to the toroidal field coil systems
References
- ITER Magnets design description document DDD11-2 v2 2 (2009)
N_RADIAL_ARRAY = 50
module-attribute
Size of the radial distribution arrays per layers used for stress, strain and displacement distibution
a_tf_coil_inboard_case = None
module-attribute
external case area per coil (inboard leg) (m2)
a_tf_coil_outboard_case = None
module-attribute
external case area per coil (outboard leg) (m2)
a_tf_turn_steel = None
module-attribute
area of the cable conduit (m2)
a_tf_wp_conductor = None
module-attribute
Winding pack conductor area [m2] Does not include the area of voids and central helium channel
a_res_tf_coil_conductor = None
module-attribute
Area of resistive conductor in resistive TF coil [m2]
a_tf_turn_cable_space_no_void = None
module-attribute
Cable space area (per turn) [m2] Includes the area of voids and central helium channel
a_tf_turn_insulation = None
module-attribute
single turn insulation area (m2)
a_tf_coil_wp_turn_insulation = None
module-attribute
winding pack turn insulation area per coil (m2)
sig_tf_case_max = None
module-attribute
Allowable maximum shear stress (Tresca criterion) in TF coil case (Pa)
sig_tf_wp_max = None
module-attribute
Allowable maximum shear stress (Tresca criterion) in TF coil conduit (Pa)
a_tf_leg_outboard = None
module-attribute
outboard TF leg area (m2)
a_tf_wp_steel = None
module-attribute
Total area of all winding pack steel (sum of each conduit steel from each turn) (m2)
a_tf_wp_extra_void = None
module-attribute
winding pack void (He coolant) area (m2)
a_tf_wp_coolant_channels = None
module-attribute
winding pack He coil area (m2)
bcritsc = None
module-attribute
upper critical field (T) for Nb3Sn superconductor at zero temperature and
strain (i_tf_sc_mat=4, =bc20m)
b_tf_inboard_peak_symmetric = None
module-attribute
mean peak field at TF coil (T)
b_tf_inboard_peak_with_ripple = None
module-attribute
peak field at TF conductor with ripple (T)
casestr = None
module-attribute
case strain
dr_tf_plasma_case = None
module-attribute
inboard TF coil case plasma side thickness (m) (calculated for stellarators)
f_dr_tf_plasma_case = None
module-attribute
inboard TF coil case plasma side thickness as a fraction of dr_tf_inboard
i_f_dr_tf_plasma_case = None
module-attribute
logical switch to make dr_tf_plasma_case a fraction of TF coil thickness (f_dr_tf_plasma_case)
dx_tf_side_case_min = None
module-attribute
inboard TF coil minimum sidewall case thickness (m) (calculated for stellarators)
dx_tf_side_case_peak = None
module-attribute
inboard TF coil peak sidewall case thickness (m) (calculated for stellarators)
casths_fraction = None
module-attribute
inboard TF coil sidewall case thickness as a fraction of dx_tf_inboard_out_toroidal
tfc_sidewall_is_fraction = None
module-attribute
logical switch to make dx_tf_side_case_min a fraction of TF coil thickness (casths_fraction)
t_conductor = None
module-attribute
Conductor (cable + steel conduit) area averaged dimension [m]
dx_tf_turn_general = None
module-attribute
TF coil turn edge length including turn insulation [m] If the turn is not a square (i_tf_turns_integer = 1) a squared turn of equivelent size is use to calculated this quantity If the dx_tf_turn_general is non zero, c_tf_turn is calculated
i_dx_tf_turn_general_input = None
module-attribute
Boolean switch to activated when the user set the TF coil turn dimensions Not an input
t_turn_tf_max = None
module-attribute
TF turn edge length including turn insulation upper limit [m] If the turn is not a square (i_tf_turns_integer = 1) a squared turn of equivelent size is use for this constraint constraint equation icc = 86
dx_tf_turn_cable_space_general = None
module-attribute
TF coil superconducting cable squared/rounded dimensions [m] If the turn is not a square (i_tf_turns_integer = 1) a squared cable of equivelent size is use to calculated this quantity If the dx_tf_turn_cable_space_general is non zero, c_tf_turn is calculated
i_dx_tf_turn_cable_space_general_input = None
module-attribute
Boolean switch to activated when the user set the TF coil cable dimensions Not an input
acs = None
module-attribute
Area of space inside conductor (m2)
cdtfleg = None
module-attribute
TF outboard leg current density (A/m2) (resistive coils only)
cforce = None
module-attribute
centering force on inboard leg (per coil) (N/m)
cplen = None
module-attribute
length of TF coil inboard leg ('centrepost') (i_tf_sup = 1)
c_tf_turn = None
module-attribute
TF coil current per turn (A). (calculated for stellarators) (calculated for
integer-turn TF coils i_tf_turns_integer=1) (iteration variable 60)
c_tf_turn_max = None
module-attribute
Max TF coil current per turn [A]. (for stellarators and i_tf_turns_integer=1)
(constraint equation 77)
den_tf_coil_case = None
module-attribute
density of coil case (kg/m3)
dcond = None
module-attribute
density of superconductor type given by i_tf_sc_mat/i_cs_superconductor/i_pf_superconductor (kg/m3)
den_tf_wp_turn_insulation = None
module-attribute
density of conduit + ground-wall insulation (kg/m3)
dia_tf_turn_coolant_channel = None
module-attribute
diameter of central helium channel in TF winding (m)
e_tf_magnetic_stored_total_gj = None
module-attribute
total magnetic stored energy in the toroidal field coils (GJ)
e_tf_coil_magnetic_stored = None
module-attribute
Stored magnetic energy in a single TF coil (J)
b_crit_upper_nbti = None
module-attribute
upper critical field of GL_nbti
t_crit_nbti = None
module-attribute
critical temperature of GL_nbti
max_force_density = None
module-attribute
Maximal (WP averaged) force density in TF coils at 1 point. (MN/m3)
f_a_tf_turn_cable_copper = None
module-attribute
copper fraction of cable conductor (TF coils) (iteration variable 59)
fhts = None
module-attribute
technology adjustment factor for critical current density fit for isumat..=2 Bi-2212 superconductor, to describe the level of technology assumed (i.e. to account for stress, fatigue, radiation, AC losses, joints or manufacturing variations; 1.0 would be very optimistic)
insstrain = None
module-attribute
Radial strain in insulator
i_tf_stress_model = None
module-attribute
Switch for the TF coil stress model 0 : Generalized plane strain formulation, Issues #977 and #991, O(n^3) 1 : Old plane stress model (only for SC) 2 : Axisymmetric extended plane strain, Issues #1414 and #998, O(n)
i_tf_tresca = None
module-attribute
Switch for TF coil conduit Tresca stress criterion: 0 : Tresca (no adjustment); 1 : Tresca with CEA adjustment factors (radial+2%, vertical+60%)
i_tf_wp_geom = None
module-attribute
Switch for TF WP geometry selection 0 : Rectangular geometry 1 : Double rectangular geometry 2 : Trapezoidal geometry (constant lateral casing thickness) Default setting for backward compatibility if i_tf_turns_integer = 0 : Double rectangular if i_tf_turns_integer = 1 : Rectangular
i_tf_case_geom = None
module-attribute
Switch for TF case geometry selection 0 : Circular front case (ITER design) 1 : Straight front case
i_tf_turns_integer = None
module-attribute
Switch for TF coil integer/non-integer turns: 0 : non-integer turns 1 : integer turns
i_tf_sc_mat = None
module-attribute
Switch for superconductor material in TF coils: - =1 ITER Nb3Sn critical surface model with standard ITER parameters - =2 Bi-2212 high temperature superconductor (range of validity T < 20K, adjusted field b < 104 T, B > 6 T) - =3 NbTi - =4 ITER Nb3Sn model with user-specified parameters - =5 WST Nb3Sn parameterisation - =6 REBCO HTS tape in CroCo strand - =7 Durham Ginzburg-Landau critical surface model for Nb-Ti - =8 Durham Ginzburg-Landau critical surface model for REBCO - =9 Hazelton experimental data + Zhai conceptual model for REBCO
i_tf_sup = None
module-attribute
Switch for TF coil conductor model: - =0 copper - =1 superconductor - =2 Cryogenic aluminium
i_tf_shape = None
module-attribute
Switch for TF coil toroidal shape: - =0 Default value : Picture frame coil for TART / PROCESS D-shape for non itart - =1 PROCESS D-shape : parametrise with 2 arcs - =2 Picture frame coils
i_tf_cond_eyoung_axial = None
module-attribute
Switch for the behavior of the TF coil conductor elastic axial properties
- =0 Young's modulus is set to zero, and the conductor is not considered
in the stress calculation. This corresponds to the case that the
conductor is much less stiff than the conduit, or the case that the
conductor is prevented (isolated) from taking axial loads.
- =1 Elastic properties are set by user input, using the variable
eyoung_cond_axial
- =2 Elastic properties are set to reasonable defaults taking into
account the superconducting material i_tf_sc_mat
i_tf_cond_eyoung_trans = None
module-attribute
Switch for the behavior of the elastic properties of the TF coil
conductorin the transverse direction. Only active if
i_tf_cond_eyoung_axial == 2
- =0 Cable not potted in solder. Transverse Young's modulus set to zero.
- =1 Cable potted in solder. If i_tf_cond_eyoung_axial == 2, the
transverse Young's modulus of the conductor is equal to the axial,
which is set to a sensible material-dependent default.
n_tf_wp_pancakes = None
module-attribute
Number of pancakes in TF coil. Only used if i_tf_turns_integer=1
n_tf_wp_layers = None
module-attribute
Number of layers in TF coil. Only used if i_tf_turns_integer=1
n_rad_per_layer = None
module-attribute
Size of the arrays per layers storing the radial dependent stress quantities (stresses, strain displacement etc..)
i_tf_bucking = None
module-attribute
Switch for TF inboard suport structure design: Default setting for backward compatibility - if copper resistive TF (i_tf_sup = 0) : Free standing TF without bucking structure - if Superconducting TF (i_tf_sup = 1) : Free standing TF with a steel casing - if aluminium TF (i_tf_sup = 2) : Free standing TF with a bucking structure Rem : the case is a bucking structure - =0 : Free standing TF without case/bucking cyliner (only a conductor layer) - =1 : Free standing TF with a case/bucking cylinder made of - if copper resistive TF (i_tf_sup = 0) : used defined bucking cylinder - if Superconducting TF (i_tf_sup = 1) : Steel casing - if aluminium resisitive TF (i_tf_sup = 2) : used defined bucking cylinder - =2 : The TF is in contact with the CS : "bucked and wedged design" Fast version : thin TF-CS interface neglected in the stress calculations (3 layers) The CS is frictionally decoupled from the TF, does not carry axial tension - =3 : The TF is in contact with the CS : "bucked and wedged design" Full version : thin TF-CS Kapton interface introduced in the stress calculations (4 layers) The CS and kaptop are frictionally decoupled from the TF, do not carry axial tension
n_tf_graded_layers = None
module-attribute
Number of layers of different stress properties in the WP. If n_tf_graded_layers > 1,
a graded coil is condidered
n_tf_stress_layers = None
module-attribute
Number of layers considered for the inboard TF stress calculations set in initial.f90 from i_tf_bucking and n_tf_graded_layers
n_tf_wp_stress_layers = None
module-attribute
Maximum number of layers that can be considered in the TF coil composited/smeared stress analysis. This is the layers of one turn, not the entire WP. Default: 5. void, conductor, copper, conduit, insulation.
j_tf_bus = None
module-attribute
bussing current density (A/m2)
j_crit_str_tf = None
module-attribute
j_crit_str : superconductor strand critical current density under operating conditions (A/m2). Necessary for the cost calculation in $/kAm
j_crit_str_0 = None
module-attribute
j_crit_str_pf_0 : superconductor strand critical current density at 6 T and 4.2 K (A/m2) Necessary for the cost calculation in $/kAm
j_tf_wp_critical = None
module-attribute
critical current density for winding pack (A/m2)
j_tf_wp_quench_heat_max = None
module-attribute
allowable TF coil winding pack current density, for dump temperature rise protection (A/m2)
j_tf_wp = None
module-attribute
winding pack engineering current density (A/m2)
oacdcp = None
module-attribute
Overall current density in TF coil inboard legs midplane (A/m2) Rem SK : Not used in tfcoil to set the current any more. Should not be used as iteration variable 12 any more. It is now calculated.
eyoung_ins = None
module-attribute
Insulator Young's modulus [Pa]. Default value (1.0D8) setup the following values - SC TF, eyoung_ins = 20 Gpa (default value from DDD11-2 v2 2 (2009)) - Al TF, eyoung_ins = 2.5 GPa (Kapton polymer)
eyoung_steel = None
module-attribute
Steel case Young's modulus (Pa) (default value from DDD11-2 v2 2 (2009))
eyoung_cond_axial = None
module-attribute
SC TF coil conductor Young's modulus in the parallel (along the wire/tape)
direction [Pa]
Set by user input only if i_tf_cond_eyoung_axial == 1; otherwise
set by the behavior of that switch.
eyoung_cond_trans = None
module-attribute
SC TF coil conductor Young's modulus in the transverse direction [Pa]
Set by user input only if i_tf_cond_eyoung_axial == 1; otherwise
set by the behavior of that switch.
eyoung_res_tf_buck = None
module-attribute
Resistive TF magnets bucking cylinder young modulus (Pa)
eyoung_copper = None
module-attribute
Copper young modulus. Default value taken from wikipedia
eyoung_al = None
module-attribute
Aluminium young modulus. Default value taken from wikipedia
poisson_steel = None
module-attribute
Steel Poisson's ratio, Source : https://www.engineeringtoolbox.com/metals-poissons-ratio-d_1268.html
poisson_copper = None
module-attribute
Copper Poisson's ratio. Source : https://www.engineeringtoolbox.com/poissons-ratio-d_1224.html
poisson_al = None
module-attribute
Aluminium Poisson's ratio. Source : https://www.engineeringtoolbox.com/poissons-ratio-d_1224.html
poisson_ins = None
module-attribute
Insulation Poisson's ratio. Default: Kapton. Source : DuPont™ Kapton® HN datasheet.
poisson_cond_axial = None
module-attribute
SC TF coil conductor Poisson's ratio in the parallel-transverse direction
poisson_cond_trans = None
module-attribute
SC TF coil conductor Poisson's ratio in the transverse-transverse direction
r_b_tf_inboard_peak = None
module-attribute
Radius of maximum TF B-field (m)
res_tf_leg = None
module-attribute
TF coil leg resistance (ohm)
toroidalgap = None
module-attribute
Minimal distance between two toroidal coils. (m)
ripple_b_tf_plasma_edge_max = None
module-attribute
maximum allowable toroidal field ripple amplitude at plasma edge (%)
ripple_b_tf_plasma_edge = None
module-attribute
peak/average toroidal field ripple at plasma edge (%)
c_tf_total = None
module-attribute
total (summed) current in TF coils (A)
radial_array = None
module-attribute
Array refining the radii of the stress calculations arrays
sig_tf_r = None
module-attribute
TF Inboard leg radial stress in steel r distribution at mid-plane [Pa]
sig_tf_t = None
module-attribute
TF Inboard leg tangential stress in steel r distribution at mid-plane [Pa]
deflect = None
module-attribute
TF coil radial deflection (displacement) radial distribution [m]
sig_tf_z = None
module-attribute
TF Inboard leg vertical tensile stress in steel at mid-plane [Pa]
sig_tf_vmises = None
module-attribute
TF Inboard leg Von-Mises stress in steel r distribution at mid-plane [Pa]
s_shear_tf = None
module-attribute
TF Inboard leg maximum shear stress (Tresca criterion) in steel r distribution at mid-plane [Pa]
sig_tf_cs_bucked = None
module-attribute
sig_tf_case = None
module-attribute
Maximum shear stress (Tresca criterion) in TF casing steel structures (Pa)
sig_tf_wp = None
module-attribute
str_cs_con_res = None
module-attribute
Residual manufacturing strain in CS superconductor material
str_pf_con_res = None
module-attribute
Residual manufacturing strain in PF superconductor material
str_tf_con_res = None
module-attribute
Residual manufacturing strain in TF superconductor material
If i_str_wp == 0, used to compute the critical surface.
Otherwise, the self-consistent winding pack str_wp is used.
str_wp = None
module-attribute
Axial (vertical) strain in the TF coil winding pack found by
self-consistent stress/strain calculation.
if i_str_wp == 1, used to compute the critical surface.
Otherwise, the input value str_tf_con_res is used.
Constrain the absolute value using constraint equation 88
You can't have constraint 88 and i_str_wp = 0 at the same time
str_wp_max = None
module-attribute
Maximum allowed absolute value of the strain in the TF coil
(Constraint equation 88)
i_str_wp = None
module-attribute
Switch for the behavior of the TF strain used to compute the strain-dependent critical surface: - =0 str_tf_con_res is used - =1 str_wp is used
quench_model = None
module-attribute
switch for TF coil quench model (Only applies to REBCO magnet at present, issue #522): - ='exponential' exponential quench with constant discharge resistor - ='linear' quench with constant voltage
time1 = None
module-attribute
Time at which TF quench is detected (s)
tcritsc = None
module-attribute
critical temperature (K) for superconductor at zero field and strain (i_tf_sc_mat=4, =tc0m)
t_tf_superconductor_quench = None
module-attribute
fast discharge time for TF coil in event of quench (s) (iteration variable 56)
For REBCO model, meaning depends on quench_model:
- exponential quench : e-folding time (s)`
- linear quench : discharge time (s)
a_tf_inboard_total = None
module-attribute
Area of inboard midplane TF legs (m2)
len_tf_bus = None
module-attribute
TF coil bus length (m)
m_tf_bus = None
module-attribute
TF coil bus mass (kg)
tfckw = None
module-attribute
available DC power for charging the TF coils (kW)
tfcmw = None
module-attribute
Peak power per TF power supply (MW)
p_cp_resistive_mw = None
module-attribute
Peak resistive TF coil inboard leg power (MW)
p_tf_joints_resistive_mw = None
module-attribute
TF joints resistive power losses (MW)
tfcryoarea = None
module-attribute
surface area of toroidal shells covering TF coils (m2)
tficrn = None
module-attribute
TF coil half-width - inner dr_bore (m)
ind_tf_coil = None
module-attribute
TF coil inductance (H)
dx_tf_wp_insertion_gap = None
module-attribute
TF coil WP insertion gap (m)
p_tf_leg_resistive_mw = None
module-attribute
TF coil outboard leg resistive power (MW)
rho_cp = None
module-attribute
TF coil inboard leg resistivity [Ohm-m]. If itart=0, this variable is the
average resistivity over the whole magnet
rho_tf_leg = None
module-attribute
Resistivity of a TF coil leg (Ohm-m)
rho_tf_bus = None
module-attribute
Resistivity of a TF coil bus (Ohm-m). Default values is for that of GLIDCOP AL-15 (C15715) at 293K
frhocp = None
module-attribute
Centrepost resistivity enhancement factor. For itart=0, this factor
is used for the whole magnet
frholeg = None
module-attribute
Ouboard legs resistivity enhancement factor. Only used for itart=1.
i_cp_joints = None
module-attribute
Switch for CP demoutable joints type -= 0 : Clampled joints -= 1 : Sliding joints Default value (-1) choses : Sliding joints for resistive magnets (i_tf_sup = 0, 2) Clampled joints for superconducting magents (i_tf_sup = 1)
rho_tf_joints = None
module-attribute
TF joints surfacic resistivity [ohm.m]. Feldmetal joints assumed.
n_tf_joints_contact = None
module-attribute
Number of contact per turn
n_tf_joints = None
module-attribute
Number of joints Ex: n_tf_joints = 2 for top and bottom CP joints
th_joint_contact = None
module-attribute
TF sliding joints contact pad width [m]
p_tf_joints_resistive = None
module-attribute
Calculated TF joints resistive power losses [W]
len_tf_coil = None
module-attribute
TF coil circumference (m)
eff_tf_cryo = None
module-attribute
TF cryoplant efficiency (compared to pefect Carnot cycle). Using -1 set the default value depending on magnet technology: - i_tf_sup = 1 : SC magnet, eff_tf_cryo = 0.13 (ITER design) - i_tf_sup = 2 : Cryo-aluminium, eff_tf_cryo = 0.4
n_tf_coils = None
module-attribute
Number of TF coils (default = 50 for stellarators). Number of TF coils outer legs for ST
tfocrn = None
module-attribute
TF coil half-width - outer dr_bore (m)
tfsai = None
module-attribute
area of the inboard TF coil legs (m2)
tfsao = None
module-attribute
area of the outboard TF coil legs (m2)
tftmp = None
module-attribute
peak helium coolant temperature in TF coils and PF coils (K)
dx_tf_inboard_out_toroidal = None
module-attribute
TF coil toroidal thickness (m)
dx_tf_turn_insulation = None
module-attribute
conduit insulation thickness (m)
layer_ins = None
module-attribute
Additional insulation thickness between layers (m)
dr_tf_nose_case = None
module-attribute
inboard TF coil case outer (non-plasma side) thickness (m) (iteration variable 57)
(calculated for stellarators)
dr_tf_wp_with_insulation = None
module-attribute
radial thickness of winding pack (m) (iteration variable 140) (issue #514)
dx_tf_turn_steel = None
module-attribute
TF coil turn steel conduit case thickness (m) (iteration variable 58)
dx_tf_wp_insulation = None
module-attribute
Thickness of the ground insulation layer surrounding (m)
- Superconductor TF (i_tf_sup == 1) : The TF coil Winding packs
- Resistive magnets (i_tf_sup /= 1) : The TF coil wedges
Rem : Thickness calculated for stellarators.
temp_tf_superconductor_margin_min = None
module-attribute
minimum allowable temperature margin : TF coils (K)
temp_cs_superconductor_margin_min = None
module-attribute
minimum allowable temperature margin : CS (K)
tmargmin = None
module-attribute
minimum allowable temperature margin : TFC AND CS (K)
temp_margin = None
module-attribute
temperature margin (K)
temp_tf_superconductor_margin = None
module-attribute
TF coil superconductor temperature margin (K)
temp_tf_conductor_quench_max = None
module-attribute
maximum temp during a quench for protection (K)
temp_croco_quench_max = None
module-attribute
CroCo strand: maximum permitted temp during a quench (K)
temp_croco_quench = None
module-attribute
CroCo strand: Actual temp reached during a quench (K)
temp_tf_cryo = None
module-attribute
coil temperature for cryogenic plant power calculation (K)
n_tf_coil_turns = None
module-attribute
number of turns per TF coil
v_tf_coil_dump_quench_max_kv = None
module-attribute
max voltage across TF coil during quench (kV) (iteration variable 52)
vforce = None
module-attribute
vertical tension on inboard leg/coil (N)
f_vforce_inboard = None
module-attribute
Fraction of the total vertical force taken by the TF inboard leg tension
Not used for resistive itart=1 (sliding joints)
vforce_outboard = None
module-attribute
Vertical tension on outboard leg/coil (N)
f_a_tf_turn_cable_space_extra_void = None
module-attribute
coolant fraction of TFC 'cable' (i_tf_sup=1), or of TFC leg (i_tf_ssup=0)
voltfleg = None
module-attribute
volume of each TF coil outboard leg (m3)
vtfkv = None
module-attribute
TF coil voltage for resistive coil including bus (kV)
v_tf_coil_dump_quench_kv = None
module-attribute
voltage across a TF coil during quench (kV)
m_tf_coil_case = None
module-attribute
mass per coil of external case (kg)
m_tf_coil_conductor = None
module-attribute
TF coil conductor mass per coil (kg/coil).
For itart=1, coil is return limb plus centrepost/n_tf_coils
m_tf_coil_copper = None
module-attribute
copper mass in TF coil conductor (kg/coil).
For itart=1, coil is return limb plus centrepost/n_tf_coils
whtconal = None
module-attribute
Aluminium mass in TF coil conductor (kg/coil).
For itart=1, coil is return limb plus centrepost/n_tf_coils
m_tf_coil_wp_turn_insulation = None
module-attribute
conduit insulation mass in TF coil conductor (kg/coil)
m_tf_coil_superconductor = None
module-attribute
superconductor mass in TF coil cable (kg/coil)
m_tf_wp_steel_conduit = None
module-attribute
steel conduit mass in TF coil conductor (kg/coil)
m_tf_coil_wp_insulation = None
module-attribute
mass of ground-wall insulation layer per coil (kg/coil)
m_tf_coils_total = None
module-attribute
total mass of the TF coils (kg)
dx_tf_wp_primary_toroidal = None
module-attribute
width of first step of winding pack (m)
dx_tf_wp_secondary_toroidal = None
module-attribute
width of second step of winding pack (m)
dthet = None
module-attribute
angle of arc i (rad)
radctf = None
module-attribute
radius of arc i (m)
r_tf_arc = None
module-attribute
x location of arc point i on surface (m)
xctfc = None
module-attribute
x location of arc centre i (m)
z_tf_arc = None
module-attribute
y location of arc point i on surface (m)
yctfc = None
module-attribute
y location of arc centre i (m)
tfa = None
module-attribute
Horizontal radius of inside edge of TF coil (m)
tfb = None
module-attribute
Vertical radius of inside edge of TF coil (m)
drtop = None
module-attribute
centrepost taper maximum radius adjustment (m)
dztop = None
module-attribute
centrepost taper height adjustment (m)
etapump = None
module-attribute
centrepost coolant pump efficiency
fcoolcp = None
module-attribute
coolant fraction of TF coil inboard legs (iteration variable 23)
f_a_tf_cool_outboard = None
module-attribute
coolant fraction of TF coil outboard legs
a_cp_cool = None
module-attribute
Centrepost cooling area toroidal cross-section (constant over the whole CP)
n_cp_coolant_channels_total = None
module-attribute
number of centrepost coolant tubes
p_cp_coolant_pump_elec = None
module-attribute
centrepost coolant pump power (W)
p_cp_resistive = None
module-attribute
resistive power in the centrepost (itart=1) [W].
If itart=0, this variable is the ressitive power on the whole magnet
p_tf_leg_resistive = None
module-attribute
Summed resistive power in the TF coil legs [W]. Remain 0 if itart=0.
temp_cp_max = None
module-attribute
maximum peak centrepost temperature (K) (constraint equation 44)
radius_cp_coolant_channel = None
module-attribute
average radius of coolant channel (m) (iteration variable 69)
temp_cp_coolant_inlet = None
module-attribute
centrepost coolant inlet temperature (K)
dtemp_cp_coolant = None
module-attribute
inlet / outlet TF coil coolant temperature rise (K)
temp_cp_average = None
module-attribute
Average temperature of centrepost called CP (K). Only used for resistive coils
to compute the resisitive heating. Must be an iteration variable for
ST (itart=1) (iteration variable 20)
tcpav2 = None
module-attribute
Computed centrepost average temperature (K) (for consistency)
temp_tf_legs_outboard = None
module-attribute
Average temperature of the TF outboard legs [K]. If temp_tf_legs_outboard=-1.0, the ouboard
legs and CP temperatures are the same. Fixed for now, should use a contraints eq like temp_cp_average
temp_cp_peak = None
module-attribute
peak centrepost temperature (K)
vel_cp_coolant_midplane = None
module-attribute
inlet centrepost coolant flow speed at midplane (m/s) (iteration variable 70)
vol_cond_cp = None
module-attribute
Exact conductor volume in the centrepost (m3)
whtcp = None
module-attribute
mass of TF coil inboard legs (kg)
whttflgs = None
module-attribute
mass of the TF coil legs (kg)
cryo_cool_req = None
module-attribute
Cryo cooling requirement at helium temp 4.5K (kW)
theta1_coil = None
module-attribute
The angle of the outboard arc forming the TF coil current center line [deg]
theta1_vv = None
module-attribute
The angle of the outboard arc forming the Vacuum Vessel current center line [deg]
max_vv_stress = None
module-attribute
The allowable peak maximum shear stress in the vacuum vessel due to quench and fast discharge of the TF coils [Pa]
t_tf_quench_detection = None
module-attribute
TF coil quench detection time (s). Only used for TF coil quench protection.
rrr_tf_cu = None
module-attribute
TF coil copper residual-resistance-ratio (RRR). Only used for quench protection.
init_tfcoil_variables()
Source code in process/data_structure/tfcoil_variables.py
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