“.......If you fold space along a previously unknown 4th dimension,......”
It seems it would take enormous amounts of energy. I would think it would be pretty revealing, ionizing radiation on almost all wavelenghts. Additionaly I wouldn’t want to be anywhere near it!
The power source is Element 115 (Uunpentium/Moscovium) details at Links below.
https://gravitywarpdrive.com/Element_115.htm
https://gravitywarpdrive.com/Anti-Matter_Reactor.htm#ELEMENT%20115