Title :
A beam position monitor for low current DC beams
Author :
Adderley, P. ; Barry, W. ; Heefner, J. ; Kloeppel, P. ; Rossmanith, R. ; Wise, M. ; Jachim, S.
Author_Institution :
Continuous Electron Beam Accel. Facility, Newport News, VA, USA
Abstract :
The 4-GeV recirculating linac, CEBAF (Continuous Electron Beam Accelerator Facility), is presently under construction and will produce a CW beam with average current between 0.1 and 200 μA. In order to measure beam position, the beam current will be amplitude-modulated at a frequency of 10 MHz. The modulation is detected by an inductive loop type monitor with electronics sensitive only to the modulation frequency. The first tests with the beam from the CEBAF injector indicate that beam position can be measured with an accuracy of 0.1 mm at a modulated beam current of 1 μA
Keywords :
beam handling equipment; beam handling techniques; electron accelerators; linear accelerators; 4 GeV; CEBAF; CW beam; amplitude-modulated; average current; beam position monitor; inductive loop type monitor; low current DC beams; modulated beam current; modulation frequency; recirculating linac; Current measurement; Electron accelerators; Electron beams; Frequency measurement; Frequency modulation; Linear particle accelerator; Monitoring; Particle beams; Position measurement; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.72866
