15–19 Nov 2021
Fukuoka Convention Center
Asia/Tokyo timezone

Conduction Cooling Test of Short Period NI HTS Undulator at Different Opearating Temperature Ranges 20-77 K

TUE-OR1-102-03
16 Nov 2021, 10:30
15m
Fukuoka Convention Center

Fukuoka Convention Center

Speaker

Jeonghwan Park (Seoul National University)

Description

Recently, a domestic project for the construction of a 4th generation light source, Ochang Advanced Synchrotron for Industry and Science(OASIS), is embarked by the Ministry of Science and ICT in Korea. To increase the performance of the next generation storage ring, Seoul National University in collaboration with Pohang Accelerator Laboratory started a feasibility study on no-insulation(NI) HTS undulator magnet. We designed, constructed, and tested NI HTS undulator coil with 1.5 periods, 14 mm periodic length, and 6 mm magnetic gap. Performance and characteristic parameters of the coil are evaluated at different operating temperature ranges in a conduction cooling circumference: (1) maximum achievable magnetic field; (2) critical current; (3) characteristic resistance; and (4) joint resistivity. Based on the test results, we present preliminary design sets of undulator magnets with different specifications: (1) operating temperature; (2) periodic length; and (3) conductor specification.

Acknowledgment
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2018R1A2B3009249). This work was also supported in part by MSIT and POSTECH.

Primary author

Jeonghwan Park (Seoul National University)

Co-authors

Mr Jaemin Kim (Seoul National University) Dr Dong-Eon Kim (Pohang Accelerator Laboratory) Dr Seunghwan Shin (Pohang Accelerator Laboratory) Dr Taekyun Ha (Pohang Accelerator Laboratory) Garam Hahn (Pohang Accelerator Laboratory) Mr Geonyoung Kim (Seoul National University) Jeseok Bang (Seoul National University) Seungyong Hahn (Seoul National University)

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