Accession Number:

ADA159027

Title:

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

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1985-06-01

Pagination or Media Count:

81.0

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

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE