Transmission-line impedance measurements for an advanced hadron facility

Walling, L.; McMurry, D.; Neuffer, D.; Thiessen, H. A.

doi:10.1016/0168-9002(89)91474-5

Cited by 62 publications

(26 citation statements)

References 5 publications

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“…Using the Faltens model for distributed wall impedances, Walling et al introduced the log formula for use in structures long compared to the beam tube diameter [8],…”

Section: Introductionmentioning

confidence: 99%

Validity of coupling impedance bench measurements

Hahn

2000

Phys. Rev. ST Accel. Beams

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In this paper the validity of coupling impedance bench measurements is theoretically demonstrated for the standard model of a uniformly distributed wall impedance. Integral equations expressing the magnetic field at the wall are found for the two cases where the device is excited either by a beam or a central wire. The integral equations are solved by a perturbation method with the coupling impedance as the expansion parameter, leading to expressions for the coupling impedance of the beam and the forward scattering coefficient in the bench measurement. Conditions for the validity of bench measurements are indicated, and the interpretation of wire measurements via the scattering coefficient by the conventional formulas is discussed.

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“…Using the Faltens model for distributed wall impedances, Walling et al introduced the log formula for use in structures long compared to the beam tube diameter [8],…”

Section: Introductionmentioning

confidence: 99%

Validity of coupling impedance bench measurements

Hahn

2000

Phys. Rev. ST Accel. Beams

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“…However, it nevertheless represents the only hard data on the impedance of a structure similar to the one of interest, at least as of the publication date of this report. The measurements were taken by Walling while she was still at LANL (July, '91) using the wire technique [7].…”

Section: Numerical Results: Small Modelmentioning

confidence: 99%

Calculation of longitudinal and transverse impedances of Ferrite-50 beampipe insert for Cornell B-Factory. Final report

DeFord¹,

Shang²

1991

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“…Use and calibration of this type of measuring system have been previously described. 4 The calibration corrects for the effects of the line discontinuities and allows the determination of the impedance a.ppearing at the gap, as a function of frequency. …”

Section: Test Measurementsmentioning

confidence: 99%

Proton synchrotron RF cavity mode damper tests

Smythe

Friedrichs²,

Walling³

Conference Record of the 1991 IEEE Particle Accelerator Conference

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A versat,ile, broad frequency range, rf cavity mode damper has been described in a previous paper.' A mode damper of this type has now been designed, constructed, installed, and tested on an existing 50 MHz synchrotron cavity. Measurements on the combined system have been completed, affording a comparison of analytical predictions with actual performance. The results of the measurements confirm the predict,ed efficacy of the mode damper up to 1000 MHz.

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Transmission-line impedance measurements for an advanced hadron facility

Cited by 62 publications

References 5 publications

Validity of coupling impedance bench measurements

Validity of coupling impedance bench measurements

Calculation of longitudinal and transverse impedances of Ferrite-50 beampipe insert for Cornell B-Factory. Final report

Proton synchrotron RF cavity mode damper tests

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