Title :
A High Resolution Wire Scanner Beam Profile Monitor with a Microprocessor Data Acquisition System
Author :
Cutler, R.I. ; Mohr, D.L. ; Whittaker, J.K. ; Yoder, N.R.
Author_Institution :
National Bureau of Standards Washington, DC 20234
Abstract :
A beam profile monitor has been constructed for the NBS-LANL Racetrack Microtron. The monitor consists of two perpendicular 30 ¿m diameter carbon wires that are driven through an electron beam by a pneumatic actuator. A long-lifetime, electroformed nickel bellows is used for the linear-motion vacuum feedthrough. Secondary emission current from the wires and a signal from a transducer measuring the position of the wires are simultaneously digitized by a microprocessor to yield beam current density profiles in two dimensions. The wire scanner is designed for use with both pulsed and cw beams.
Keywords :
Bellows; Carbon dioxide; Data acquisition; Electron beams; Microprocessors; Monitoring; Nickel; Pneumatic actuators; Transducers; Wire;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1983.4332765
