Beam measurements on the electron injector for a high current betatron
- 1. Institute for Accelerator and Plasma Beam Technology, University of New Mexico, Albuquerque, NM
Description
The beam from a pulsed electron source for injection into a high current betatron has been investigated. Only cold cathode field enhanced emitters were considered. Carbon fiber bundles and hydrocarbon felt were tried in a gridded Pierce-geometry gun. The observed emittance was not acceptable at a current of 140 A and a diode potential of about 280 kV. An alternative source was investigated consisting of a single needle point cathode and a plane anode grid. At a current of 200 A an emittance of epsilon = 44π cm mrad was observed. The spherical aberration of the source was found negligible. The pulse length of the high voltage pulse was about 20 nsec. The turn-on delay times for the carbon fiber and the needle point cathode were around 10 to 15 nsec
Additional details
Publishing Information
- Journal Title
- IEEE Trans. Nucl. Sci.
- Journal Volume
- NS-32
- Journal Issue
- 5
- Series
- IEEE Trans. Nucl. Sci.
- Journal Page Range
- 3274-3276
- ISSN
- 0018-9499
- CODEN
- IETNA
Conference
- Title
- Particle accelerator conference.
- Dates
- 13-16 May 1985.
- Place
- Vancouver (Canada).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 17044542
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AMP BEAM CURRENTS; BEAM EMITTANCE; BEAM MONITORING; BETATRONS; CARBON FIBERS; ELECTRON BEAM INJECTION; PERFORMANCE; PIERCE ELECTRON GUNS; TIMING PROPERTIES
- Descriptors DEC
- ACCELERATORS; BEAM CURRENTS; BEAM INJECTION; CURRENTS; CYCLIC ACCELERATORS; ELECTRON SOURCES; FIBERS; MONITORING; PARTICLE SOURCES; RADIATION SOURCES
Optional Information
- Secondary number(s)
- CONF-850504--.