Characterization of the Goubau line for testing beam diagnostic instruments

Citation data:

Journal of Instrumentation, ISSN: 1748-0221, Vol: 12, Issue: 12, Page: P12016-P12016

Publication Year:
2017
Captures 9
Readers 9
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/23157
DOI:
10.1088/1748-0221/12/12/p12016
Author(s):
Kim, S. Y.; Stulle, F.; Sung, C. K.; Yoo, K. H.; Seok, J.; Moon, K. J.; Choi, C. U.; Chung, Y.; Kim, G.; Woo, H. J.; Kwon, J.; Lee, I. G.; Choi, EunMi; Chung, Moses Show More Hide
Publisher(s):
IOP Publishing; IOP PUBLISHING LTD
Tags:
Physics and Astronomy; Mathematics
article description
One of the main characteristics of the Goubau line is that it supports a low-loss, non-radiated surface wave guided by a dielectric-coated metal wire. The dominant mode of the surface wave along the Goubau line is a TM mode, which resembles the pattern of the electromagnetic fields induced in the metallic beam pipe when the charged particle beam passes through it. Therefore, the Goubau line can be used for the preliminary bench test and performance optimization of the beam diagnostic instruments without requiring charged particle beams from the accelerators. In this paper, we discuss the basic properties of the Goubau line for testing beam diagnostic instruments and present the initial test results for button-type beam position monitors (BPMs). The experimental results are consistent with the theoretical estimations, which indicates that Goubau line allows effective testing of beam diagnostic equipment.