Analysis of coupling impedance bench measurements using Bethe's diffraction theory

Conference · Fri Jun 01 00:00:00 EDT 2001

OSTI ID:783882

De Santis, Stefano

In this paper we study the validity of coupling impedance bench measurements, comparing two of the most commonly used formulas to the result obtained, applying a modified version of Bethe's theory of diffraction to a lumped impedance in a coaxial beam pipe. The equations found provide a quantitative expression for the influence of the wire thickness used in the measurement of the real and imaginary part of the longitudinal impedance. The precision achievable in an actual measurement is therefore discussed. The method presented can also be applied in the presence of distributed impedances as well as to the analysis of transverse impedance measurements.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 783882
• Report Number(s): LBNL-48248; R&D Project: 459001; TRN: US0104105
• Resource Relation: Conference: Particle Accelerator Conference 2001, Chicago, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 1 Jun 2001
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COUPLING
DIFFRACTION
IMPEDANCE
MEASURING METHODS
CALCULATION METHODS
COUPLING IMPEDANCE