Field emission and x-ray effect on RAON half-wave resonator (HWR) superconducting cavity performance
Source abstract
Abstract
Performance of superconducting cavities are investigated with field emission effect and x-ray detection. Conducting particles and surface curvature can cause field emission from the surface of the superconducting Nb cavity. The field emission makes the local temperature increase and the quality factor decrease. Vertical test is performed for half-wave resonator (HWR) cavities. The vertical test facilities are introduced and the quality factors are measured for the half-wave resonator (HWR) cavities. The quality factors of the cavities decrease as the x-ray are increased. The surface resistance and x-ray generation of the cavity can be fitted well with the field emission theory. The quality factor for the half-wave resonator (HWR) cavities decreases linearly with the field enhancement factor for x-ray generation.
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Research context
OpenAlex topics: Particle accelerators and beam dynamics · Gyrotron and Vacuum Electronics Research · Particle Accelerators and Free-Electron Lasers
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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