Speaker
Description
As a high-power pulsed neutron source driven by an accelerator, the design goal of 100 kW beam power of the China Spallation Neutron Source (CSNS) has been successfully achieved with a tolerable beam loss level. In order to deal with the potential challenges of its upgraded project for the CSNS-II with the beam power of 500 kW, a series of beam experiments were conducted in advance at the Rapid Cycling Synchrotron (RCS) of CSNS. Since the half-integer resonance is one of the strongest effects limiting the maximum beam power in high-intensity synchronous, preliminary experiments by measuring the relationship between the betatron tunes and the beam survival rate, were conducted to study the half-integer resonance in the CSNS RCS. The experiment shows that the beam survival rate rapidly decreases when the vertical tune approaches a half-integer. In addition, the envelope equation and PIC simulations were used to analyze the variation of the beam envelope and emittance growth with the betatron tunes. The results indicate that the numerical calculations are very close to the simulation results, as well as consistency between the simulation and experimental findings.
Funding Agency
Work supported by the National Natural Science Foundation of China(No. 12405170)
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I do not wish my paper to be marked as preprint. |
| I no longer wish to present this contribution, please withdraw it. | Please withdraw my contribution |