Spiral of Particles need mask?

I should probably just to this in same scene but wondering … I have a spiral of emitted Particles that I want around an object in another project to save proccessing am trying to do it separate.

Even if I have some kind of mask, how can I wrap it?

You may convert your particles to mesh if there aren’t too many of them or your hardware is powerful enough, append the spiral to the other file and render as a whole. Compositing is not necessary as it could be hard if the object in the other file is not in ortho view.