The 27th International Conference on Accelerators and Beam Utilizations

The fabrication of 1.3 GHz single-cell cavities by using niobium materials with fine and medium grain sizes

Nov 13, 2025, 4:55 PM

20m

5F Grand Hall (LAHAN Hotel)

Oral Working group 1: Accelerator systems

Speaker

Junho Han (Kiswire Advanced Technology Co., Ltd.)

Description

As a part of research into the fabrication methods for SRF (superconducting radio frequency) cavities used in ILC (International Linear Collider), two 1.3 GHz single-cell cavities have been fabricated successfully by using niobium materials with different grain sizes; fine grain (ASTM 5-6) and medium grain (ASTM 0-3). Both cavities have been fabricated using identical manufacturing equipments. After fabrication, They are shipped to KEK in Japan to conduct the surface treatments and VT (vertical test). We present a comprehensive overview of the cavity fabrication process and the performance test results in cryogenic temperature.