ELECTRON ENERGY MEASUREMENTS OF THE RACETRACK MICROTRON BEAM.
Abstract
The momentum spread in the beam of a racetrack microtron was measured using a high resolution beta ray spectrometer. The design of the semicircular double focusing magnetic spectrometer is described. A method of continuous magnetic field measurement in the spectrometer is discussed. The object and image positions relative to the entrance and exit planes of the spectrometer were calculated. The momentum spread in the electron beam of the accelerator as taken directly from the spectrometer was 0.41% at the half width position (full width at half intensity); 0.62% at half current; 1.28% at 90% current and 1.86% at 100% current. These values may be corrected for the natural line width of the spectrometer whose theoretical base spread was 0.16%. With these corrections the upper limit of the energy spread in the 6.0 MeV beam is 22 keV at half width; 34 keV at half integrated current; 73 keV at 90% current and 110 keV at 100% current level. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0624038
Entities
People
- E. Brannen
- H. Froelich
- V. Sells