|  | G. Ha et al., “Progress on high-power generation using sub-THz corrugated waveguide”, in Proc. 15th Int. Particle Accelerator Conf. (IPAC'24), Nashville, TN, USA, May 2024, paper MOPR24, pp. 507-510. | 
            
            |  | E. Wisniewski et al., “Fabrication study of corrugated structure for sub-THz by stacking disks”, presented at the 15th Int. Particle Accelerator Conf. (IPAC'24), Nashville, TN, USA, May 2024, paper MOPR28, unpublished. | 
            
            |  | G. Chen et al., “Progress on experimental demonstration of high-power generation from 0.4 THz corrugated structure”, presented at the 16th Int. Particle Accelerator Conf. (IPAC'25), Taipei, Taiwan, Jun. 2025, paper THAD1, this conference. |