Particle-based heat distortion - need help duplicating

I used a video to create heat distortion utilizing particles years back and wanted to duplicate it for a current project. Alas, the original website that hosted the video I used has removed or locked it away and I am having an extremely hard time duplicating it from the working blend file. I cannot figure out what I am doing wrong. If anyone would like to help me figure out the process of recreating it in a new project, I’d be most appreciative. Download Working Blender File It would be great if I could just import the heat distortion element from the original file into the new file, but doubt it could be that simple. What I have done is create the particles and emitter, the force fields, and have copied the textures and the settings I could find. That didn’t work. Thanks for your attention.