Hello Again,
I started my work for 2. drsstc. It will be slightly larger in size.
According to my plans;

~100 Khz secondary res.
~450 - ~650 Amps. OCD
IGBT: CM200DU-12NFH (I bought) full bridge 340 v. DC bus voltage
MMC: 8 parallel 3 serial 0.1 uf 2000v MMC (total 0.2506 uf, 6000 v. 72 A. rms, 800 A. peak)
Secondary: 110 mm dia PVC, ~2000 turn @ 0.2 mm enamelled copper wire
Primary: 0.635 mm copper tube, 5-6 turn. Flat spiral design, strike rail by 9 mm copper tube
Lower pedestal: Table from IKEA (I bought)
Topload: 10x50 cm toroid

Edit: Adding Toroid pictures,




I shared some pictures in attachments
I will share the results and construction phases here..

Kind regards,
Erdal