Title :
A testing method for the temperature difference of the helix SWS
Author :
Pu Wei ; Guodong Wang ; Cheng Cheng ; Xiaohan Sun ; Bo Chen ; Jinjun Feng ; Tiechang Yan ; Yanmei Wang ; Dongya Lv
Author_Institution :
Res. Center for Electron. Device & Syst. Reliability, Southeast Univ., Nanjing, China
Abstract :
We proposed a novel testing method for the temperature difference distribution between the helix and the shell of the helix slow-wave structure (SWS). The thermal resistance of the SWS can be deduced by the temperature difference. A distributed micro fiber Bragg grating (FBG) sensor array and the thermocouple sensors are designed to measure the temperature distribution of the helix and the shell respectively in SWS when heating the helix by the electricity. An experiment on an X-band SWS was made and the thermal resistance was deduced which makes the temperature distribution model of the SWS more accurate.
Keywords :
Bragg gratings; fibre optic sensors; sensor arrays; slow wave structures; temperature distribution; thermal resistance; thermocouples; FBG sensor array; X-band SWS; distributed microfiber Bragg grating sensor array; helix SWS; helix slow wave structure; temperature difference distribution; thermal resistance; thermocouple sensors; Sun; Testing; helix traveling-wave tubes; slow-wave structure; temperature difference; thermal resistance;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223998
