New Machinery, Timesaver, Zeiss CMM / Vision System & 50th Anniversary
March 23, 2022Derrick Vance, president, Ad-Vance Magnetics, Inc., reports that the company recently rose to a production challenge, completing a two-year contract with Fermi National Accelerator Laboratory (CSA CSM) to produce 306 magnetic shield assemblies for the LCLS-II project from the lab’s initial design.
With the help of a new 4,000-watt Mazak laser-cutting machine, Ad-Vance successfully completed the contract for the units, which each included a double-layer magnetic shield for the 1.3 GHz LCLS-II production cryomodule. They were fabricated from .040” thick Cryoperm 10, a magnetic shielding material designed for very low temperatures. The first layer was assembled around the helium vessel, with a close radial clearance of approximately 3 mm. The second layer was spaced 20 mm out from the first layer using G-10 spacers.
The magnetic shield assembly also had end caps that were connected to the first layer shields, while the shield assemblies created a cavity string that consisted of eight nine-cell superconducting and radio frequency cavities. Such assemblies will operate at the temperature range of ~1.8 K to 300 K.
The cavity and shielding are at the core of the cryomodule. The shells act as the primary layers of magnetic shielding for the internal cavities.
