论文信息 - Cryomodule Performance of the Main Linac Prototype Cavity for Cornell's Energy Recovery Linac

Cryomodule Performance of the Main Linac Prototype Cavity for Cornell's Energy Recovery Linac

Energy Recovery Linacs (ERLs) require strong damping of higher-order modes in main linac cavities to avoid beam loss from beam break-up effects. In addition, the cavities need to have very high intrinsic quality factors to minimize the size of cryogenic plants in CW cavity operation. We present world record results for a fully equipped multicell cavity in a cryomodule, reaching intrinsic quality factors at operating accelerating field of Q0(E =16.2 MV/m, 1.8 K) > 6.0×10 and Q0(E =16.2 MV/m, 1.6 K) = 1.0×10, corresponding to a residual surface resistance of 1.1 nΩ, which is more than three times better than the Q0 design specification.

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