Naval Postgraduate School
Dudley Knox Library
NPS Dudley Knox Library
View Item 
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  • How to search in Calhoun
  • My Accounts
  • Ask a Librarian
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of CalhounCollectionsThis Collection

My Account

LoginRegister

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

Observation and analysis of optical transition radiation at the NPS linac and its use for diagnostics of electron beams

Thumbnail
Download
IconCaldwell_90.pdf (2.282Mb)
Download Record
Download to EndNote/RefMan (RIS)
Download to BibTex
Author
Caldwell, David Matthew
Date
1990-06
Advisor
Maruyama, Xavier K.
Second Reader
Neighbours, John R.
Metadata
Show full item record
Abstract
An 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.
Collections
  • 1. Thesis and Dissertation Collection, all items

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    Boro-silicate polycapillary lens for collimation of x-rays 

    Chase, Michael B. (Monterey, California. Naval Postgraduate School, 1997-06);
    The purpose of this thesis is to investigate the collimation of x rays produced by transition radiation using the NPS Electron Linear Accelerator. These measurements support the theory that x rays can be focused using a ...
  • Thumbnail

    Three-dimensional analysis of optical transition radiation 

    Longstaff, Wilmer Gregg (Monterey, California. Naval Postgraduate School, 1988-12);
    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 ...
  • Thumbnail

    An experimental comparison of pumped superluminal electromagnetic radiation to Cerenkov radiation. 

    Graham, Jerry Lee (Monterey, California. Naval Postgraduate School, 1980);
    Experiments were conducted to measure the intensity of radiation emitted by a superluminal 100 MeV electron moving through a static, periodic, plane polarized magnetic field oriented perpendicular to the electron's ...
NPS Dudley Knox LibraryDUDLEY KNOX LIBRARY
Feedback

411 Dyer Rd. Bldg. 339
Monterey, CA 93943
circdesk@nps.edu
(831) 656-2947
DSN 756-2947

    Federal Depository Library      


Start Your Research

Research Guides
Academic Writing
Ask a Librarian
Copyright at NPS
Graduate Writing Center
How to Cite
Library Liaisons
Research Tools
Thesis Processing Office

Find & Download

Databases List
Articles, Books & More
NPS Theses
NPS Faculty Publications: Calhoun
Journal Titles
Course Reserves

Use the Library

My Accounts
Request Article or Book
Borrow, Renew, Return
Tech Help
Remote Access
Workshops & Tours

For Faculty & Researchers
For International Students
For Alumni

Print, Copy, Scan, Fax
Rooms & Study Spaces
Floor Map
Computers & Software
Adapters, Lockers & More

Collections

NPS Archive: Calhoun
Restricted Resources
Special Collections & Archives
Federal Depository
Homeland Security Digital Library

About

Hours
Library Staff
About Us
Special Exhibits
Policies
Our Affiliates
Visit Us

NPS-Licensed Resources—Terms & Conditions
Copyright Notice

Naval Postgraduate School

Naval Postgraduate School
1 University Circle, Monterey, CA 93943
Driving Directions | Campus Map

This is an official U.S. Navy Website |  Please read our Privacy Policy Notice  |  FOIA |  Section 508 |  No FEAR Act |  Whistleblower Protection |  Copyright and Accessibility |  Contact Webmaster

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

A logged-in user can export up to 15000 items. If you're not logged in, you can export no more than 500 items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.