Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 13th International Particle Accelerator Conference



Conference Name

13th International Particle Accelerator Conference, 12-17 June 2022, Bangkok, Thailand


Superconducting radio frequency (SRF) cavities are fundamental building blocks of modern particle accelerators. When we cool these cavities at cryogenic temperature ~2 – 4 K, we can get optimum performance by minimizing RF losses on the inner cavity surface. However, temperature-independent residual losses in SRF cavities cannot be prevented entirely. One of the leading sources of residual losses in SRF cavities is trapped magnetic flux. The flux trapping mechanism depends on different surface preparations and cool-down conditions. We have designed, developed, and commissioned a combined magnetic (B) and temperature (T) mapping system using anisotropic magneto-resistance (AMR) sensors and carbon resistors to study the flux trap mechanism in 3 GHz single-cell niobium cavities. In this contribution, we present the preliminary results of the newly commissioned B & T mapping system.


Published under the terms of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) License.

Original Publication Citation

Parajuli, I., Khanal, B., Ciovati, G., Delayen, J., & Gurevich, A. (2022). Preliminary results of magnetic and temperature map system for 3 GHz superconducting radio frequency cavities. In F. Zimmermann, H. Tanaka, P. Sudmuang, P. Klysuban, P. Sunwong, T. Chanwattana, C. Petit-Jean-Genaz, & V.R.W. Schaa (Eds.), Proceedings of the 13th International Particle Accelerator Conference (pp. 1315-1318). Joint Accelerator Conferences Website.


0000-0003-0759-8941 (Gurevich)