Resonant-Cavity Field Measurements

Kitchen, S.W.; Schelberg, A.D.

doi:10.1063/1.1722053

Cited by 19 publications

(3 citation statements)

References 6 publications

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“…The application of the Slater perturbation theorem to a spherical bead of relative permittivity r and permeability µ r showed that the fractional frequency deviation [17] is…”

Section: Electric Field Profilesmentioning

confidence: 99%

Design and testing of a high gradient radio frequency cavity for the muon collider

Wu¹

2002

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This thesis describes the design and testing of a high gradient RF cavity for the muon cooling channel of the muon collider. The 805 MHz multi-cell open iris cavity was high power tested with a 12 MW klystron in a superconducting solenoid environment. The cavity reached 21 MV/m for peak klystron power in the absence of the solenoidal field. During magnetic field operation, the cavity suffered serious surface damage and RF breakdown. Dark current in excess of 400 mA was observed. Present R & D results imply that the cavity is not suitable for the muon collider. To my parents, with profound gratitude. As with any experimental effort, many people have contributed to the successful completion of this project. My foremost thank goes to my thesis advisors Randy Johnson and Norbert Holtkamp for their constant support and guidance throughout my thesis research. Next, I would like to thank Al Moretti, Derun Li, Zubao Qian, Tom Jurgens and Mark Champion for whom I have learned a great deal about the design and testing of RF cavity. They were always there to help when I needed them. I thank Steve Geer (MUCOOL spokesperson) and Norbert Holtkamp for their relentless support of the project which kept the project alive during times of Fermilab budgetary cuts.

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“…The application of the Slater perturbation theorem to a spherical bead of relative permittivity r and permeability µ r showed that the fractional frequency deviation [17] is…”

Section: Electric Field Profilesmentioning

confidence: 99%

Design and testing of a high gradient radio frequency cavity for the muon collider

Wu¹

2002

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“…in resonant frequency of' several cavities and the volume, shape and properties of the perturbation sample has been investigated by several authors (e.g. Slater 1946, Maier and Slater 1952a, b, Gilardini 1954, Kitchen and Schelberg 1955, Scaglia 1965, Brodwin and Parsons 1965, Hall 1969. This phenomenon has been used to study the properties of conducting and/or dielectric materials of different shapes by means of different cavities.…”

Section: Outline Of Theorymentioning

confidence: 99%

Electric field distribution in a cylindrical TM010 microwave cavity with end holes and a glass tube

Pipisková¹

1970

J. Phys. D: Appl. Phys.

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A perturbation method is used for the experimental study of the effects of end holes and a glass tube on the electric field configuration in a cylindrical TM010 microwave cavity at a wavelength of 3 cm. The radius of the cavity, the radius of the end holes in each end plate and the thickness of the glass tube are comparable. The results show that the electric field intensity and configuration in the plane of the end holes (i.e. in the interacting space of a plasma with the cavity) are highly perturbed. The effect of the glass tube is to make the electric field in the radial direction more homogeneous, and to increase the interacting space in an axial direction. The value of the square of the electric field intensity E2 at the centre of the cavity without the glass tube is nearly twice as large as the value found with the glass tube. The measured values of E2 are used to calculate the error due to the glass tube in the electron density measurement. The error is found to be 29%.

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“…Since the efficiency of interaction between the electron beam and the microwave field depends on the field distribution, a measure of the field pattern is of importance to understand the behaviour of the gyrotron. In this paper we describe the results from measurements based on the use of the frequency shift induced by a localized dielectric perturbation [3,4,5,6]. The method is applied to the two types of Fabry-Perot resonators mentioned earlier.…”

Section: Introductionmentioning

confidence: 98%

Measurement of the electric field pattern of a Fabry-Perot resonator used in quasi-optical gyrotrons

Roulin

Tran

Hogge

1993

Int J Infrared Milli Waves

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The field pattern of the resonator used in a quasi-optical gyrotron operating in the mfllimetre wave range is measured. Two resonators are studied: one composed of a spherical mirror and an ellipsoidal grating and the other symmetric using two mirrors with annular slots. The measurements indicate that the electric field distribution Is gaussian, in spite of the complex geometry of the resonator, and thus provide an experimental basis for the assumption often used to compute the efficiency of quasi-optical gyrotrons.

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Resonant-Cavity Field Measurements

Cited by 19 publications

References 6 publications

Design and testing of a high gradient radio frequency cavity for the muon collider

Design and testing of a high gradient radio frequency cavity for the muon collider

Electric field distribution in a cylindrical TM010 microwave cavity with end holes and a glass tube

Measurement of the electric field pattern of a Fabry-Perot resonator used in quasi-optical gyrotrons

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