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Which consequence increases in superconducting RF cavities at high currents?

A)Increased probability of quench events
B)Decreased quality factor of cavity
C)Reduced critical magnetic field
D)Elevated BCS surface resistance

💡 Explanation

An accelerating cavity can ‘quench’ at high current because of excessive losses causing local heating; the mechanism is increased Ohmic dissipation when magnetic fields induce currents in resistive grain boundaries therefore leads to rapid transition to normal conductivity, triggering a quench, rather than the other scenarios involving linear behaviors.

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