I think aiming back/down towards the spinal chord/medulla oblongata, not up, would be more effective in guaranteeing death. That said, suffocating on an inert gas would likely be less painful as you’d pass out after only a few seconds and then die within minutes. Don’t ask me how I know.
This is the interior of the computer. They hang it to reduce vibrations as well as thermal fluctuations. I work in a different area of physics, but my uni has one of these quant computers and I’ve spoken to my colleagues who work on it. When they need to run an experiment the whole setup gets enclosed in a vacuum-sealed container and brought down to near absolute zero. Really neat to see in person.