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Chapter 8. Waveguides, Resonant Cavities, and Optical Fibers
Chapter 8. Waveguides, Resonant Cavities, and Optical Fibers

STANDING-WAVE STRUCTURES 1 Introduction Basically all
STANDING-WAVE STRUCTURES 1 Introduction Basically all

Interaction between electromagnetic and elastic waves in a
Interaction between electromagnetic and elastic waves in a

... constant measurements on glasses at low temperatures [5, 6] have drawn attention to their dielectric behaviour, and have shown that there are similarities between the dielectric and elastic properties. Thus an important questionmust be raised about the still unknown nature of the T.L.S. : are the sa ...
Final_Exam_problems
Final_Exam_problems

PAM - PEP SuperB RF
PAM - PEP SuperB RF

... and 1e9 respectively. For feedback stability R/Q = 5 W preferable  lowest detuning (see D. Teytelman’s talk) For cryogenic reasons R/Q = 30 W preferable (see later). Number of cavities required is the same for each @ L =7e35. At L = 1e36, the cavity HOM losses in the LER require more RF cavities (2 ...
Slides - Indico
Slides - Indico

... necessary to damp the wakes so that wakes from only a few bunches add together. • The smaller the bunch spacing the stronger the damping is required (NC linacs can require Q factors below 50). • This is normally achieved by adding external HOM couplers to the cavity. • These are normally quite compl ...
to the full version  in PDF
to the full version in PDF

... H.E.Puthoff proposed in his article[1] that gravity is a form of long-range van der Waals force associated with the Zitterbewegung of elementary particles in response to zero-point fluctuations(ZPF) of the vacuum. Prof. Biefeld and T.T.Brown discovered that a sufficiently charged capacitor with diel ...
cavity types - CERN Accelerator School
cavity types - CERN Accelerator School

A MICROWAVE SPECTROSCOPY
A MICROWAVE SPECTROSCOPY

... The experimental results for the ambinolar diffusion experiment and for the experiment measuring operating characteristics of microwave discharges both show an anomoly which suggests that the frequency shift of a cavity may not be a linear function of the electron density within the cavity free as h ...
Dynamic resonance of light in Fabry–Perot cavities
Dynamic resonance of light in Fabry–Perot cavities

I. Celanovic, D.J. Perreault, and J.G. Kassakian, “Resonant-Cavity Enhanced Thermal Emission,” Physical Review – B , Vol. 72, No. 075127, August 2005, pp. 1-6.
I. Celanovic, D.J. Perreault, and J.G. Kassakian, “Resonant-Cavity Enhanced Thermal Emission,” Physical Review – B , Vol. 72, No. 075127, August 2005, pp. 1-6.

... quarter-wave layers of Si and SiO2 where dH = 0.17 ␮m and dL = 0.39 ␮m are layer thicknesses, respectively. For the time being both Si and SiO2 are considered lossless dielectrics with refractive indices of nH = 3.34 and nH = 1.45, respectively. We use the shorthand notation where a Si quarterwave l ...
Optical Resonators
Optical Resonators

Motivation and Objectives
Motivation and Objectives

... which is too low for long-range flights. The switching to engines with high exhaust velocities requires external energy sources. In space, energy (solar or nuclear) is cheaper than mass; hence, such a change is justified. Moreover, for every expedition, there is an optimal exhaust velocity at which ...
to high power beam
to high power beam

Cavity BPM Plans
Cavity BPM Plans

... A bunch propagating through the cavity interacts with its eigenmodes exciting electromagnetic oscillations in the cavity. The excitation of the modes, which have a node at r=0, is very sensitive to the beam offset, what is used for the beam position detection. The first dipole mode TM110 is used bec ...
Subwavelength imaging of light confinement in high-Q/small
Subwavelength imaging of light confinement in high-Q/small

... alternate hot and dark spots on the edge of the waveguide. We note that the contrast is maximal in the central part of the cavity and that it rapidly vanishes as one enters the mirrors. Additionally, we also note that the characteristic beating length is ⬃600 nm, which surprisingly corresponds to tw ...
cavity design - lombarda.web.cern.ch
cavity design - lombarda.web.cern.ch

... when the electromagnetic energy propagates only in one direction (solid curves on the diagram)  travelling wave accelerator, TW; when the energy is reflected back and forth at both ends of the cavity (solid and dotted curves)  standing wave accelerator, SW; if vph and vg in the same direction  fo ...
v mf - Yimg
v mf - Yimg

... however, is not yet clear. At a first glance, the final equation: ...
Home Work Problem Set 2 3-1 In Fig. 23
Home Work Problem Set 2 3-1 In Fig. 23

... distribution of volume charge densityρ= (14.1 pC/m3)r/R, where r is radial distance from the sphere’s center. (a) What is the sphere’s total charge? What is the magnitude E of the electric field at (b) r = 0, (c) r = R/2.00, and (d) r = R? (e) Sketch a graph of E versus r. (HRW23-55) 3-3 A nonconduc ...
214 11 CQED 11.1 Cavity QED 216 11 CQED 11.1 Cavity QED 218
214 11 CQED 11.1 Cavity QED 216 11 CQED 11.1 Cavity QED 218

... photon source can be operationally determined by two experiments: a HanburyBrown/Twiss experiment to measure g(2)(τ) and a Hong-Ou-Mandel two-photon interference experiment (see Sect. 16.4.2 ). If we do indeed have a source of single photon pulses with one and only one photon per pulse g(2)(τ) shoul ...
Charged Conductor at Equilibrium (1)
Charged Conductor at Equilibrium (1)

View Full Pdf - International Journal of Research in Aeronautical and
View Full Pdf - International Journal of Research in Aeronautical and

Chapter 21 = Electric Charge Lecture
Chapter 21 = Electric Charge Lecture

Experiment 8. Microwaves
Experiment 8. Microwaves

Slide 1
Slide 1

... electron beams - dynamics electrons in vacuum region interact with surrounding structure electrons interact with each other - nonlinearity THz bunching due to space-charge limited emission. An intriguing possibility for generating radiation. ...
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RF resonant cavity thruster

An RF resonant cavity thruster is a proposed new type of electromagnetic thruster. Unlike conventional electromagnetic thrusters, they are designed to use no reaction mass, and to emit no directional radiation. Their design principles seem to be not scientific, because they violate the fundamental law of momentum conservation.A few variations on such thrusters have been proposed. Aerospace engineer Roger Shawyer designed the EmDrive in 2001, and has persistently promoted the idea since then through his company, Satellite Propulsion Research.Chemical engineer Guido Fetta designed the Cannae Drive, based on similar principles. If they were found to work as claimed, providing thrust without consuming a propellant would have important applications to all areas of propulsion, from spacecraft to other vehicles.A few independent teams of physicists, notably a team at Xi'an's Northwestern Polytechnical University (NWPU), one at NASA's Eagleworks laboratories, and another at the Dresden University of Technology in Germany, have built prototypes of these designs. Some of their tests have tentatively observed a small net thrust from those prototypes. A small thrust has also been observed in devices deliberately built to not produce thrust. This experimental work has been published in university journals, conference proceedings, and some local Chinese peer-reviewed journals. Research is in progress to see if these effects are caused by some as-yet-unknown phenomenon, or artifacts due to experimental error, particularly because the observed results are small, and there are otherwise no compelling explanations for the apparent violation of the law of conservation of momentum. Claims of such a surprising result would need especially thorough efforts to rule out sources of error.
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