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dc.contributor.advisorMaruyama, Xavier K.
dc.contributor.authorCaldwell, David Matthew
dc.date1990
dc.date.accessioned2013-12-16T23:09:55Z
dc.date.available2013-12-16T23:09:55Z
dc.date.issued1990-06
dc.descriptionApproved for public release, distribution is unlimiteden_US
dc.description.abstractAn experimental technique for observing Optical Transition Radiation, (OTR), that is both simple and effective, is shown. A Macintosh II computer equipped with an image frame grabber board and Image software package allows for extensive analysis of the captured electron beam spot OTR patterns. The equipment is capable of measuring relative intensities to better than 1% for a constant source image. With beam energies of nearly 100 MeV the captured OTR images show an unexpected assymetry in the beam intensity profile. The variations of the beam intensity and shape are shown for nominally steady beam conditions. Using Image, integrated signals of the beam spot OTR patterns for several targets as a function of beam current show a linear relationship, thereby creating a technique for computing electron beam current. Portions of the beam profile with varying percentages of beam spot maximum intensity also show a linear relationship between beam current and OTR image intensity. A radiation cone OTR pattern has been observed for the NPS linac beam. From the pattern, the Lorentz factor for the 100 MeV electrons is observed to be less than the computed value, and probably indicates the non-collinearity of the electron beam.en_US
dc.description.urihttp://hdl.handle.net/10945/38000
dc.format.extentvi, 74 p.: ill.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.titleObservation and analysis of optical transition radiation at the NPS linac and its use for diagnostics of electron beamsen_US
dc.typeThesisen_US
dc.contributor.secondreaderNeighbours, John R.
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentDepartment of Physics
dc.subject.authorTransition radiationen_US
dc.subject.authordiffraction patternen_US
dc.subject.authorLorentz factoren_US
dc.subject.authorelectron bean currenten_US
dc.subject.authorintegrated density;en_US
dc.subject.authorDiffractionen_US
dc.subject.authorElectron beamsen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Physicsen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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