Cerenkov Radiation from Periodic Bunches for a Finite Path in Air.

Abstract

The equation as derived by F.R. Buskirk and J.R. Neighbours for the power in the diffraction pattern of Cerenkov radiation from periodic bunches in air is experimentally tested at the Naval Postgraduate School Accelerator Laboratory (NPSAL). Previous experiments done at NPSAL are briefly reviewed. The experiment focuses on reducing RF noise and introduces a method for recording experimental data. RF noise is divided into two categories: (1) Noise received directly at the antenna; and (2) noise picked up by the cabling. Category 1 is divided into two subcategories: (a) Cerenkov radiation received by the antenna after being reflected off secondary objects; and (b) residual klystron radiation. Experimental data curves from the third harmonic are compared to theoretical patterns for various finite emission lengths and angle shifts. The data demonstrates tha noise-generated fine structure which appeared in a previous experiment at NPSAL can be eliminated with increased shielding. Keywords: Periodic electron bunches; Diffractin pattern. (Theses)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1985
Accession Number
ADA159027

Entities

People

  • R. G. Bruce

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Amplifiers
  • California
  • Cerenkov Radiation
  • Detectors
  • Electronic Equipment
  • Electrons
  • Frequency
  • Geometry
  • Klystrons
  • Linear Accelerators
  • Measurement
  • Noise Reduction
  • Physics
  • Radio Frequency
  • Shielding
  • United States
  • X Band

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Plasma Physics / Magnetohydrodynamics
  • Regression Analysis.

Technology Areas

  • Microelectronics