Title :
A new measurement method of the delay line length in the X-band delay line distribution system (DLDS)
Author :
Tamura, F. ; Mizuno, H.
Author_Institution :
Tokyo Univ., Japan
Abstract :
In order to control the driving RF phase at the input of the accelerating structure of X-band linear collider main linacs, it is necessary to measure the length of the long TE01 mode delay lines of 40-80 m. A new measurement scheme by using the low frequency resonant mode of the TE01 mode delay line was proposed. The delay lines have the tapered guide on its both ends, thus the low frequency resonant mode around 2 GHz can be the measure of the delay line dimensions. The operational principle and the elementary characteristics of this measurement method such as, sensitivity, and other basic design parameters are presented
Keywords :
accelerator RF systems; delay lines; length measurement; linear colliders; sensitivity; 2 GHz; 40 to 80 m; TE01 mode delay lines; X-band delay line distribution system; delay line length; driving RF phase; linac; linear collider; low frequency resonant mode; sensitivity; tapered guide; Delay lines; Frequency measurement; Length measurement; Linear accelerators; Phase measurement; Radio frequency; Resonance; Resonant frequency; Temperature; Thermal expansion;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753412
