Speaker
Description
To reduce the dark current and secondary electron multiplication in conventional conducting accelerator cavities, and to improve the quantum efficiency of copper photocathodes, thereby achieving higher beam quality and enhancing the acceleration gradient and operational stability of accelerators, Tsinghua University designed a 13.56 MHz internal coil-type capacitive discharge plasma experimental platform to validate the feasibility of in-situ plasma cleaning of conventional superconducting copper cavities. This paper mainly introduces the architecture of this experimental platform, including the structure of the experimental cavity and its accompanying gas system, microwave system, and monitoring system. This experiment also validates the oxidation and reduction capabilities of the active components in the plasma, particularly comparing the oxidation ability of excited oxygen atoms and oxygen ions and the reduction ability of excited hydrogen atoms and hydrogen ions. This experimental platform can be used for cleaning and reduction of small and simple copper structures and verifies the feasibility of In-situ plasma cleaning of conventional conducting copper cavities.
| Region represented | Asia |
|---|
