Establishment of a Capability to Measure Optical Transition Radiation

Establishment of a Capability to Measure Optical Transition Radiation PDF Author: Peter Karl Dallman
Publisher:
ISBN:
Category :
Languages : en
Pages : 103

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Book Description
Optical transition radiation (OTR) can be used as a beam diagnostic system for charged particle beams. The experimental setup developed here demonstrates the capability to observe and measure OTR due to an electron beam from a linear accelerator. The setup is compact, simple, and readily adapted to experimental work. Through the use of two software programs (QuickCapture and Image 1.14) and the QuickCapture frame grabber board, both qualitative and quantitative results are possible. One of the useful qualitative results is a three-dimensional beam profile, which is quickly produced from a captured image. The system measured the relative intensity with a 3% variation between several images of the same source. Angular measurements of OTR can be made with an angular resolution of 600 microradians. Keywords: Optical transition radiation; Charged particle beams; Theses; Beam profiling. (jhd).

Establishment of a Capability to Measure Optical Transition Radiation

Establishment of a Capability to Measure Optical Transition Radiation PDF Author: Peter Karl Dallman
Publisher:
ISBN:
Category :
Languages : en
Pages : 103

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Book Description
Optical transition radiation (OTR) can be used as a beam diagnostic system for charged particle beams. The experimental setup developed here demonstrates the capability to observe and measure OTR due to an electron beam from a linear accelerator. The setup is compact, simple, and readily adapted to experimental work. Through the use of two software programs (QuickCapture and Image 1.14) and the QuickCapture frame grabber board, both qualitative and quantitative results are possible. One of the useful qualitative results is a three-dimensional beam profile, which is quickly produced from a captured image. The system measured the relative intensity with a 3% variation between several images of the same source. Angular measurements of OTR can be made with an angular resolution of 600 microradians. Keywords: Optical transition radiation; Charged particle beams; Theses; Beam profiling. (jhd).

Establishment of a Capability to Measure Optical Transition Radiation

Establishment of a Capability to Measure Optical Transition Radiation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Optical transition radiation (OTR) can be used as a beam diagnostic system for charged particle beams. The experimental setup developed here demonstrates the capability to observe and measure OTR due to an electron beam from a linear accelerator. The setup is compact, simple, and readily adapted to experimental work. Through the use of two software programs (QuickCapture and Image 1.14) and the QuickCapture frame grabber board, both qualitative and quantitative results are possible. One of the useful qualitative results is a three-dimensional beam profile, which is quickly produced from a captured image. The system measured the relative intensity with a 3% variation between several images of the same source. Angular measurements of OTR can be made with an angular resolution of 600 microradians. Keywords: Optical transition radiation; Charged particle beams; Theses; Beam profiling. (jhd).

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Image Formation by Incoherent and Coherent Transition Radiation from Flat and Rough Surfaces

Image Formation by Incoherent and Coherent Transition Radiation from Flat and Rough Surfaces PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 23

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Book Description
In this paper we derive equations for the image formation of transverse profile of a relativistic beam obtained by means of optical transition radiation (OTR) from flat and rough metal surfaces. The motivation behind this study lies in the desire to suppress coherent transition radiation (COTR) observed in experiments at modern free electron lasers. The physical mechanism behind the problem of COTR is that the OTR is predominantly radiated at small angles of order of 1/? where? is the relativistic factor of the beam. This means that the transverse formation size of the image is of order of {bar?}? where {bar?} = {lambda}/2? with {lambda} the radiation wavelength. For relativistic beams this can be comparable or even exceed the transverse size of the beam, which would mean that the image of the beam has very little to do with its transverse profile. It is fortuitous, however, that the incoherent image is formed by adding radiation energy of electrons and results in the transverse formation size being of order of {bar {lambda}}/?{sub a}, with?{sub a} is the aperture angle of the optical system. The COTR image, in contrast, is formed by adding electromagnetic field of electrons, and leads to the formation size {bar {lambda}}?. In situations when the COTR intensity exceeds that of OTR the COTR imaging makes the diagnostic incapable of measuring the beam profile.

Three-Dimensional Analysis of Optical Transition Radiation

Three-Dimensional Analysis of Optical Transition Radiation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
A three dimensional analysis of the intensity distribution of backward optical transition radiation has been performed. The effects of variations in electron energy and beam divergence and on material properties such as dielectric permittivities and the resultant coherence length upon the angular distribution and polarization of optical transition radiation has been investigated. A surprising observation important to the use of optical transition radiation as a diagnostic tool for high energy electron beams is the behavior of the perpendicular component of the intensity. In contrast to low energies where the parallel component dominates, at electron energies above 200 MeV, the perpendicular component dominates. This requires the use of a polarization filter to diagnose particle beam properties at high energies. Keywords: Theses, Transition radiation, Particle beams, Coherent transition radiation, Two foil interferometer, Beam diagnostics. (JHD).

Government Reports Annual Index

Government Reports Annual Index PDF Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1448

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Book Description


Three-Dimensional Analysis of Optical Transition Radiation

Three-Dimensional Analysis of Optical Transition Radiation PDF Author: Wilmer Gregg Longstaff
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Book Description
A three dimensional analysis of the intensity distribution of backward optical transition radiation has been performed. The effects of variations in electron energy and beam divergence and on material properties such as dielectric permittivities and the resultant coherence length upon the angular distribution and polarization of optical transition radiation has been investigated. A surprising observation important to the use of optical transition radiation as a diagnostic tool for high energy electron beams is the behavior of the perpendicular component of the intensity. In contrast to low energies where the parallel component dominates, at electron energies above 200 MeV, the perpendicular component dominates. This requires the use of a polarization filter to diagnose particle beam properties at high energies. Keywords: Theses, Transition radiation, Particle beams, Coherent transition radiation, Two foil interferometer, Beam diagnostics. (JHD).

Accelerator Physics at the Tevatron Collider

Accelerator Physics at the Tevatron Collider PDF Author: Valery Lebedev
Publisher: Springer
ISBN: 1493908855
Category : Science
Languages : en
Pages : 496

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Book Description
This book presents the developments in accelerator physics and technology implemented at the Tevatron proton-antiproton collider, the world’s most powerful accelerator for almost twenty years prior to the completion of the Large Hadron Collider. The book covers the history of collider operation and upgrades, novel arrangements of beam optics and methods of orbit control, antiproton production and cooling, beam instabilities and feedback systems, halo collimation, and advanced beam instrumentation. The topics discussed show the complexity and breadth of the issues associated with modern hadron accelerators, while providing a systematic approach needed in the design and construction of next generation colliders. This book is a valuable resource for researchers in high energy physics and can serve as an introduction for students studying the beam physics of colliders.

Masters Theses in the Pure and Applied Sciences

Masters Theses in the Pure and Applied Sciences PDF Author: W. H. Shafer
Publisher: Plenum Publishing Corporation
ISBN: 9780306443480
Category : Education
Languages : en
Pages : 392

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Book Description
Masters Theses Listed by Discipline: Aerospace Engineering. Agricultural Economics, Sciences and Engineering. Architechtural Engineering and Urban Planning. Astronomy. Astrophysics. Ceramic Engineering. Communications Engineering and Computer Science. Cryogenic Engineering. Electrical Engineering. Engineering Mechanics. Engineering Physics. Engineering Science. Fuels, Combustion, and Air Pollution. General and Environmental Engineering. Geochemistry and Soil Science. Geological Sciences and Geophysical Engineering. Geology and Earth Science. Geophysics. Industrial Engineering. Marine and Ocean Engineering. Materials Science and Engineering. Mechanical Engineering and Bioengineering. Metallurgy. Meteorology and Atmospheric Science. 17 additional disciplines. Index.

Energy Research Abstracts

Energy Research Abstracts PDF Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 354

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Book Description