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I’m Charlie Reece
An accelerator technology scientist here at Jefferson Lab.
Cryomodules are very important for our accelerator.
Crymodule is "Cryo" - means cold
"Module" means it’s a unit
So it’s a building block for our accelerator.
What's contained inside of the cryomodule are the superconducting RF cavities.
Superconducting RF cavities must be cold
Filled with liquid helium on the outside
So they sit at about 2 Kelvin
Just above absolute zero.
The beam goes through the middle of the cryomodule.
The cryomodule needs to act like a very efficient Thermos bottle
Keeping the internal srf cavities very cold
So they can operate efficiently
While allowing very little heat in from the outside.
They also need to position
These cavities and the electric fields inside of the them very precisely
So that they affect the beam in very well-controlled ways.
This is what a cryomodule is.