Title :
Coupling impedance of vacuum pumping holes for the APS storage ring
Author :
Zhou, J. ; Song, J.J. ; Kustom, R.L.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
The coupling impedance of a single slot in a thick wall beam pipe was measured. The slot dimension is small compared to the wavelength of interest. The measurements were done by the wire method with the synthetic pulse technique. The gating technique was also applied to obtain the reflection response for a structure that does not have appropriate calibration standards. The measured results are in good agreement with calculated impedance using analytical formulae given by other authors
Keywords :
beam handling equipment; electric impedance; electron accelerators; particle accelerator accessories; particle beam diagnostics; storage rings; APS storage ring; coupling impedance; gating technique; reflection response; single slot; synthetic pulse technique; thick wall beam pipe; vacuum pumping holes; wire method; Apertures; Calibration; Frequency domain analysis; Impedance measurement; Optical coupling; Optical reflection; Pulse measurements; Storage rings; Wavelength measurement; Wire;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309662
