Speaker
Danho Ahn
(IBS, KAIST)
Description
The IBS Center for Axion and Precision Physics Research (CAPP) explores for dark matter axions with tunable resonant cavities immersed in a strong magnetic field to boost the axion-to-photon conversion when a cavity mode resonates with the axion mass. Deposition of superconducting thin films on the inner surface of the cavity increases Q factor of the cavity and thereby enhances the conversion power. However, in the presence of high magnetic fields, Type II superconductors with high critical regions (> 10 T) should be used. In this study, we present various RF characteristics related to superconducting thin films using cylindrical cavities with NbTi coated using the RF magnetron sputtering method; and with YBCO tapes on the inner surface.
Author
Danho Ahn
(IBS, KAIST)
Co-authors
Ohjoon Kwon
(Institute for Basic Science)
Dr
Woohyun Chung
(Center for Axion and Precision Physics Research, IBS)
Prof.
Dojun Youm
(KAIST)
Dr
Wonjun Jang
(Center for Quantum Nanoscience, IBS)
Prof.
Jhinhwan Lee
(KAIST)
Mr
Doyu Lee
(Center for Axion and Precision Physics Research, IBS)
Jinsu KIM
(CAPP@IBS, KAIST)
Yannis Semertzidis
(CAPP/IBS and KAIST in South Korea)
