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Focusing with quadrupoles?

by nataliasanchez77@gmail.com
Tags: focusing, quadrupoles
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nataliasanchez77@gmail.com
#1
Oct8-07, 05:00 AM
P: n/a
Hello,

I read that quadrupole magnets focus in one plane and defocus in the
other. I understand that in a doublet configuration (FODO) one can get
net focusing in both planes. But in this case the beta function is big
in one tranverse plane and small in the other for a given position
along the beamline.

How can it be that at a collision point of a particle accelerator one
can squeeze the beam in both planes? I heard that triplets can do
that. Where can I read more about this?

Thanks,
Natalia Sanchez

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