A Study of Thermocurrent Induced Magnetic Fields in ILC Cavities
Anthony C. Crawford
TL;DR
This paper investigates the magnetic fields induced by thermocurrents in ILC superconducting RF cavities with titanium helium vessels, providing estimates and discussing effects of symmetry breaking.
Contribution
It offers a first-order estimate of the magnetic fields generated in axisymmetric ILC cavities and discusses the impact of symmetry breaking effects.
Findings
Induced magnetic field is not more than 0.14 milligauss in symmetric conditions.
Magnetic fields due to symmetry breaking are analyzed.
The study provides a basis for understanding thermocurrent effects in SRF cavities.
Abstract
The case of axisymmetric ILC type cavities with titanium helium vessels is investigated. A first order estimate for magnetic field within the SRF current layer is presented. The induced magnetic field is found to be not more than 1.4x10-8 Tesla = 0.14 milligauss for the case of axial symmetry. Magnetic fields due to symmetry breaking effects are discussed.
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Taxonomy
TopicsSuperconducting Materials and Applications · Magnetic confinement fusion research · Particle accelerators and beam dynamics