Beam current measurements for LEDA

Author

Power, J. ; Barr, D. ; Gilpatrick, J. ; Martinez, D. ; Shurter, R. ; Stettler, M.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

3

fYear

1999

fDate

1999

Firstpage

2241

Abstract

Beam diagnostics systems for the Low Energy Demonstrator Accelerator (LEDA) at Los Alamos include beam current measurements. The LEDA machine operates in both pulsed and CW modes with a peak current of 100 mA. Two types of current sensors are employed. Some are DC- to 4-kHz-bandwidth modular parametric current transformer (MPCT) sensors from Bergoz(R) and the others are 10-Hz to 200-kHz bandwidth custom-designed transformers. Both AC and DC sensors are integrated into common shielding enclosures on the beam line. A VXI module has been developed to interface the analog sensors to the EPICS control system. The same VXI module can be used for either type of sensor and contains an on-board calibration system which provides a system absolute accuracy of ±0.2%. The calibration, data processing, and general operation of the VXI module is controlled by two internal DSP modules. The performance of the system on the LEDA beam line is presented

Keywords

accelerator control systems; calibration; current transformers; digital signal processing chips; electric current measurement; particle accelerators; particle beam diagnostics; signal processing; 0 to 4 kHz; 10 Hz to 200 kHz; 100 mA; CW mode; EPICS control system; LEDA; Low Energy Demonstrator Accelerator; VXI module; beam current measurements; beam diagnostics; common shielding enclosures; current sensors; custom-designed transformers; data processing; internal DSP modules; modular parametric current transformer; on-board calibration system; pulsed mode; Bandwidth; Calibration; Control systems; Current measurement; Current transformers; Data processing; Digital signal processing; Particle beams; Pulse transformers; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.794433

Filename

794433