I think you need to control the exot and anti-matter into the middle more and put more sensors for the energy.

Make more EXOT, less AMTR

I think I know how yo could build one.

Yes, they will. That just happened to thespazz.  You can store it in increments and release it together using a swch counter, maybe.  Unless you just want a constant beam.  Here, Ill post something that might help the other way.

Put the energy converters up the rectangle all up the rectangle and it should become more stable of a current.