TF vertical bore not consistent for single null option

[jonmaddock]

In GitLab by @skahn on Nov 19, 2019, 10:43

Description

In case of a single null, the upper and lower layers layout are not symmetric. For example the top section has also a breeding blancket while the lower section hasn't.

Current calculation of the vertical bore :
tfborev = 2.0D0*(rminor*kappa + vgaptop + fwith + blnktth + vvblgap + shldtth + ddwi+ vgap2 + thshield + tftsgap)

The lower divertor does not have a breeding blanket for instance, and I suspect the gaps differents.

Best regards
Sebastien
Kahn

Ref : @stuartmuldrew, @mkovari, @jmorris-uk

[mkovari]

This variable is now called build_variables.dh_tf_inner_bore. It is used only in costs_2015.py. The code that actually uses dh_tf_inner_bore is never tested.

Is that correct @j-a-foster ?

[mkovari]

Large tokamak regression test

 *********************************************** Vertical Build ***************************************
 TF coil                                      0.926           8.510   (tfcth)             

 TF coil                                      0.926          -9.744   (tfcth)             

Total = 18.254

Total height and width of TFC               18.254          13.673

This output results from

tf_total_height = build_variables.dh_tf_inner_bore + 2 * build_variables.tfcth

(I have output it in this format so I didn't need to modify the regression test. Sorry.)