Fermilab team completes
3.9-GHz cavity string
The assembled four-cavity string for the 3.9-GHz cryomodule.
In Friday's Fermilab Today, we ran an ILC Newsline article from Jan. 8 about progress on the 3.9-GHz cryomodule cavity string.
We received an update that the fourth cavity was successfully tested and installed into the string of cavities pictured above in the MP-9 clean room. The cavity string will be moved for module assembly today.
The Fermilab team, led by Helen Edwards and Elvin Harms, Jr., has worked for years to assemble the cavities. It hopes to ship the completed cryomodule to DESY in March where it will be used in the FLASH free-electron laser.
"This will be the first truly Fermilab built superconducting RF module," Harms said.
The collaboration with DESY was Fermilab's first experience in producing this type of cavity, which stores radio-frequency energy to power particles passing through the cryomodule. The knowledge the team has received from assembling the cavities can later be applied to building cavities for the Fermilab's proposed proton accelerator, Project X.