A controller for 97 MHz super-conducting QWR for NSC LINAC booster

Pramana

Ashutosh Pandey¹  Jitendra Karande³  Ajith Kumar¹  C I Sujo²  Gopal Joshi²  Bhuban Sahu¹ 

[1] Nuclear Science Centre, New Delhi 110 016, India$$;Electronics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Tata Institute of Fundamental Research, Mumbai 400 005, India$$

关键词: Resonator;    variable reactance method;    dynamic phase control;    phase;    amplitude stabilization.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

A resonator controller has been implemented to stabilize the amplitude and phase of rf fields in the super-conducting resonators of NSC LINAC. Due to reduced losses these resonators have intrinsic band width of the order of 0.1 Hz at 97 MHz whereas the vibration-induced center frequency changes are of the order of a few tens of hertz. In the control strategy followed, the resonator is made the frequency selective part of an oscillator. The phase lock is achieved by dynamically adding a phase shift in the oscillator. A slow tuner minimizes the slow drifts in the resonator center frequency. In this paper we present the control strategy, implementation details and performance obtained with this controller.

【 授权许可】

Unknown