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Superconducting Splittable Quadrupole Magnet for Linear Accelerators

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7 Author(s)
V. S. Kashikhin ; Fermi National Accelerator Laboratory, Batavia, IL, USA ; N. Andreev ; J. Kerby ; Y. Orlov
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A new superconducting quadrupole magnet for linear accelerators was fabricated at Fermilab. The magnet is designed to work inside a cryomodule in the space between SCRF cavities. SCRF cavities must be installed inside a very clean room adding issues to the magnet design, and fabrication. The designed magnet has a splittable along the vertical plane configuration and could be installed outside of the clean room around the beam pipe previously connected to neighboring cavities. For more convenient assembly and replacement a “superferric” magnet configuration with four racetrack type coils was chosen. The magnet does not have a helium vessel and is conductively cooled from the cryomodule LHe supply pipe and a helium gas return pipe. The quadrupole generates 36 T integrated magnetic field gradient, has 600 mm effective length, and the peak gradient is 54 T/m. In this paper the quadrupole magnetic, mechanical, and thermal designs are presented, along with the magnet fabrication overview and first test results.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:22 ,  Issue: 3 )