Hanyang Liu

Pulsed octupole magnet for beam instability mitigation in rapid cycling synchrotron

Liangsheng Huang, Shouyan Xu, Yuntao Liu, Yiqin Liu et autres

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Beam coupling impedance and collective effects in rapid cycling synchrotron of CSNS-II

Liangsheng Huang, Li Rao, Ming-Yang Huang, Jianliang Chen et autres

Abstract The Rapid Cycling Synchrotron (RCS) functions as the principal accelerator for the China Spallation Neutron Source Phase II project (CSNS-II). Designed for a beam power of 500 kW, the RCS achieves the highest circulating beam current worldwide at this power level. …

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New operation analysis method for vacuum tube driving a tuned cavity

Jian Wu, Chunlin Zhang, Bin Wu, Hanyang Liu et autres

The rf system of China Spallation Neutron Source (CSNS) Rapid Cycling Synchrotron (RCS) utilizes vacuum tubes to drive the ferrite-loaded cavities. Ensuring stable tube operation in the rf system is crucial for the acceleration of high-intensity beams, as any instability may impede …

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Dynamic Process of Power Grid Cascading Failure

Hanyang Liu, Yifei Wang, Minghe Wu, Jun Liu

In recent years, the resilience of power systems has received increasing attention due to the rise in extreme events. Cascading failures are a primary cause of large-scale network interruptions, and the inherent uncertainties of new energy sources can make cascading failures more …

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Reconstructing phase space of injection beam based on the measurement of accumulated beam: A novel tomography algorithm and its applications

Hanyang Liu, Shouyan Xu, Meng-Ju Li, Y. S. Yuan et autres

The measurement of phase space has always been an important topic in the field of accelerator physics, playing an indispensable role in understanding the beam dynamics. The phase space distribution of the injected beam is crucial for optimizing the multiturn accumulation injection …

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Matched phase sweep method for the optimization of bunching factor in dual rf systems of high-intensity hadron synchrotrons

Hanyang Liu, Y. S. Yuan, Shouyan Xu, Liangsheng Huang et autres

The scheme of multiturn painting beam injection in a dual harmonic rf system is widely employed in high-intensity proton or heavy ion synchrotrons to alleviate space charge effects. With a momentum offset of the injected beams, a large bunching factor can be …

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High-intensity effects on longitudinal bunch merging in hadron synchrotrons

Y. S. Yuan, G. Franchetti, Hanyang Liu, Sheng Wang

Longitudinal rf manipulation schemes have been widely employed for achieving various beam experiments and applications in heavy ion or proton (hadron) synchrotrons. For high-intensity hadron beams, longitudinal space charge and cavity beam loading play a key role in beam intensity limitations since …

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