Investigation of the stand-alone cryomodule for the 3rd harmonic cavity of the synchrotron light source

Abstract Superconducting accelerators currently rely on central refrigeration systems and complex piping system for distributing liquid helium and nitrogen. The proposed stand-alone cryomodule can be an attractive solution for both scientific and industrial applications. It offers the simpler applicability in facilities lacking cryogenic equipment and expertise, and is particularly useful in scenarios where the development of additional cryogenic systems in impractical. The technical challenge lies in minimizing heat losses to incorporate a commercially available helium ZBO (Zero-Boil-Off) system by the embedded cryocoolers on cryomodule. This paper introduces the design proposal for a stand-alone cryomodule intended for bunch lengthening cavity applications at synchrotron light sources which the design employs a normal conducting cavity as the primary RF system, eliminating the need for bulky cryogenic refrigeration units. The development of low-heat load peripheral components contributes to cost reduction and the broadens the applicability of such a system. The primary challenge in implementing an SRF cryomodule with a cryocooler for particle accelerator applications lies in effectively suppressing vibrations and reducing heat loads.