Crash

If you want that exact effect, I would contact Bang or Ronin and see what they say. Otherwise, you might consider making one yourself or getting another particle creator to make something similar.

FissionMetroid has some UFO and beam stuff here https://tf2maps.net/downloads/alien-ufo-mothership-and-other-particles.645/

There's also this placeholder content that may have what you are looking for: https://tf2maps.net/threads/mercs-vs-aliens-contest-placeholder-content.29739/

Looks like same guy uploaded Glassworks as well

He says he doesn't take any credit and said it belongs to crash with a link to his account. This is a strange case.
Also he said that if the author doesn't like this, he can ask it to be taken down, and it will. Just putting out some facts.

IT IS I! THE B-TEAM! why not make a forum post so the hole community can help? B-TEAM A WWWAAAAAAAYYYYYYYY

I don't need it anymore. It was more of a General Suggestion. He is the first one that Pops up if you look for 'How to make a TF2 Map'

I don't ever plan on making a payload tutorial because it would be absolute hell to try to create using the methods I do to create my videos. The koth tutorial was torture, and even that I made a tiny mistake in. I don't have it in me.

Plus, my series is intended to be for absolute beginners, and I consider payload a more advanced mode to create.

Thanks for answering. I can see what you mean. Payload is a literal hell to make. Not the best choice as a first map...