Undergraduate Research at Jefferson Lab

Designing, Programming, and Testing of an Advance Bead-Pull System to Measure the Multipole Components in a Superconducting Crab Cavity

Student: Jesus Jimenez Zepeda

School: Universidad de Guadalajara

Mentored By: Alex Castilla and Carlos Hernandez

Crab cavities have become indispensable in accelerator physics, evaluating their performance and optimizing their design require accurate measurements, and bead-pull measurements have proven to be a valuable tool. However, existing systems have limitations in analyzing the angular dependence and multipole components of the radiofrequency (RF) fields. In this research, an automated system was developed using LabVIEW to perform bead-pull measurements, enabling the determination of the electric field magnitude and higher-order multipole components for a cylindrical 499 MHz rf-dipole deflecting/crabbing cavity.