Simulated Lorentz Force Detuning Compensation With A Double Lever Tuner On A Dressed ILC/1.3 GHZ Cavity At Room Temperature

C. Contreras-Martinez; J.C. Yun; Y. Pischalnikov

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Simulated Lorentz Force Detuning Compensation With A Double Lever Tuner On A Dressed ILC/1.3 GHZ Cavity At Room Temperature

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arxiv 2208.06286 v1 pith:HEXXJEHA submitted 2022-08-12 physics.acc-ph

C. Contreras-Martinez , Y. Pischalnikov , J.C. Yun This is my paper · ORCID

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keywords actuatorcavitydoubleforceleverlorentzpiezoelectrictuner

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Pulsed SRF linacs with high accelerating gradients experience large frequency shifts caused by Lorentz force detuning (LFD). A piezoelectric actuator with a resonance control algorithm can maintain the cavity frequency at the nominal level, thus reducing the RF power. This study uses a double lever tuner with a piezoelectric actuator for compensation and another piezoelectric actuator to simulate the effects of the Lorentz force pulse. A double lever tuner has an advantage by increasing the stiffness of the cavity-tuner system, thus reducing the impact of LFD. The tests are conducted at room temperature and with a dressed 1.3 GHz 9-cell cavity.

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