How to focus a beam of charged particles?

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Discussion Overview

The discussion centers around methods for focusing a beam of charged particles that have been accelerated by a Van de Graaff generator. Participants explore various techniques and seek detailed explanations of existing methods.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about focusing charged particles in a beam and mentions challenges encountered with uniform magnetic fields, specifically focusing to a point rather than a beam.
  • Another participant suggests that quadrupole magnets are commonly used in particle accelerators to focus beams of charged particles.
  • A follow-up request for more detailed information about the use of quadrupole magnets is made by the original poster.
  • One participant advises using online resources for further research and offers to provide links to lecture notes if needed.
  • The original poster mentions purchasing books on electromagnetic field design as a step towards understanding the topic better.

Areas of Agreement / Disagreement

There is no consensus on a specific method for focusing charged particle beams, and multiple approaches are discussed without resolution.

Contextual Notes

Participants have not fully explored the limitations or assumptions involved in the methods discussed, and there may be dependencies on specific configurations or definitions of focusing techniques.

Who May Find This Useful

Individuals interested in particle physics, accelerator design, or electromagnetic field theory may find this discussion relevant.

NERV
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I was discovering a way to focus a number of charged particles which has been accelerated by Van de Graff generator into a beam.I do tried to find ideas in uniform magnetic field,but it seems I can only focus the particles onto a point rather than a beam.So here I was asking whether there had been any means discovered before?

Thanks.
 
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For many particle accelerators, one "focuses" a beam of charge particles using quadrupole magnets.

Zz.
 
Thanks for your reply.Would you mind if you describe it in details?
 
Use google, there are plenty of good resorces out there. Then you can ask more specific questions if you enounter any problems.

If you don't find anything, I can give you a bunch of links to lecture notes.
 
I've purchased two books on electromagnetic field designing.Thanks for your information.
 

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