△Single Stretch Wire magnetic field measurement device for fourth-generation synchrotron electromagnets

 

Korea University Sejong Campus and Geumryong Tech Co., Ltd. have successfully developed the first domestically produced Single Stretch Wire (SSW) magnetic field measurement device for electromagnets. The achievement marks the independent development of a core instrument for evaluating the performance of electromagnets used in fourth-generation synchrotron accelerators, and the device is expected to be utilized in the upcoming construction of the Cheongju synchrotron facility.

 

The two institutions collaborated for nearly three years to develop the device. Tests conducted on electromagnets supplied to overseas accelerator research centers demonstrated performance of a standard recognized internationally, thereby opening the door not only to self-reliance in accelerator technology but also to future export opportunities.

 

Traditional Hall probe methods have faced physical limitations in measuring electromagnets with apertures of around two centimeters, as required for fourth-generation synchrotrons. Such methods are time-consuming and unable to accurately assess higher-order field components. In contrast, the SSW technique uses a thin wire moving within the magnetic field that applies Faraday’s law of electromagnetic induction, enabling precise measurements even in narrow apertures. Originally developed at France’s ESRF (European Synchrotron Radiation Facility) and applied in the ESRF-EBS upgrade project, this marks the first successful domestic development in Korea.

 

As the designated lead institution for the Ministry of Science and ICT’s accelerator workforce development program, Korea University Sejong Campus continues to train master’s and doctoral-level specialists and conduct competitive accelerator research in collaboration with international laboratories.

 

Professor Kim Eunsan of Korea University Sejong Campus Department of Accelerator Science stated, “This achievement not only strengthens Korea’s accelerator research capabilities but also makes a significant contribution to the training of specialized professionals.”

 

CEO Kim Insik of Geumryong Tech stated, “This partnership between university research capacity and industrial expertise has accelerated the development of core accelerator technologies. We will further enhance our global manufacturing capabilities and actively expand into overseas markets.” Geumryong Tech, with nearly 30 years of experience, has produced both normal-conducting and superconducting magnets for particle accelerators, medical applications, and industry, and has previously supplied electromagnets to accelerator research institutes in the United Kingdom, Switzerland, and Japan.

 

KU Sejong Student PR Team, KUS-ON

Translator: Chang Jeoungeun