Particle Accelerator Safety: Debunking the Myth of Danger | WriterMon

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Discussion Overview

The discussion revolves around the safety of standing in front of a particle beam in a particle accelerator, specifically focusing on the potential dangers posed by high-energy particles such as electrons and protons. Participants explore the implications of radiation exposure and the effects of concentrated particle beams on human health.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • WriterMon questions whether standing in front of a particle beam would be dangerous, suggesting that particles typically pass through matter without harm.
  • Zz argues that exposure to a typical 10 MeV particle accelerator could be lethal due to the ionizing effects of beta radiation and bremstrahlung radiation, emphasizing the need for radiation shielding in accelerator facilities.
  • WriterMon seeks clarification on the time frame for potential harm, asking if danger would manifest in minutes or hours.
  • A participant shares an anecdote from their experience at the Tevatron, stating that standing near an active beam could lead to death within an hour, though this is described as not precise.

Areas of Agreement / Disagreement

Participants express differing views on the safety of standing in front of particle beams, with some asserting significant danger while others question the specifics of exposure and time frames. The discussion remains unresolved regarding the exact nature and timeline of potential harm.

Contextual Notes

There are limitations in the discussion regarding the assumptions about radiation types and their effects, as well as the lack of precise data on exposure times and health impacts.

WriterMon
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Hello,

I'm curious, for a novella I'm writing, whether standing in front of an electron or other particle beam in a particle accelerator would be dangerous for a person. I would think not, because I'd presume the particles would just go through us as they're always doing. But maybe in such concentrated form, they are, like a laser, dangerous?

Thanks,

WriterMon
 
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WriterMon said:
Hello,

I'm curious, for a novella I'm writing, whether standing in front of an electron or other particle beam in a particle accelerator would be dangerous for a person. I would think not, because I'd presume the particles would just go through us as they're always doing. But maybe in such concentrated form, they are, like a laser, dangerous?

Thanks,

WriterMon

If you're talking about a typical 10 MeV or greater particle accelerator, then yes, it will eventually kill you.

Remember what "beta radiation" is. It is high energy electrons. While its ionization factor is smaller than alpha, it is still dangerous enough to damage your body molecules. Proton beams would be even more dangerous.

And we still haven't talked about the bremstralung radiation yet that could even be as lethal. This is why all accelerator facilities are enclosed in radiation shielding.

Zz.
 
For comparison, a TV set electron gun is about 20KeV, isn't it?
 
Ah, many thanks, very helpful. But when you say "eventually," what time frame are we talking? Minutes? An hour?

tx,
WM
 
I'll tell you what I was told when I was working at the Tevatron (Fermilab), which is a proton-antiproton collider - the largest such collider until the LHC at CERN turns on next year. I asked if anyone ever worked in the beam tunnel (not even stand in the beam, just stand next to it) when the beam is turned on, and the guy giving me the tour just started laughing at me. He said that he would give such a person no more than one hour before he died, and it would be the most painful hour he ever experienced!

I know this is not very precise, but that gives you an idea.
 
precise enough, thanks!
E
 

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