Beam position monitor data acquisition for the Advanced Photon Source

Author

Lenkszus, Frank R. ; Kahana, Emmanuel ; Votaw, Allen J. ; Decker, Glenn A. ; Chung, Youngjoo ; Ciarlette, Daniel J. ; Laird, Robert J.

Author_Institution

Adv. Photon Source, Argonne Nat. Lab., IL, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

1814

Abstract

This paper describes the beam position monitor (BPM) data acquisition scheme for the Advanced Photon Source (APS) storage ring. The storage ring contains 360 beam position monitors distributed around its 1104-meter circumference. The beam position monitor data acquisition system is capable of making turn-by-turn measurements of all BPMs simultaneously. It is VXI-based with each VXI crate containing the electronics for 9 BPMs. The VXI local bus is used to provide sustained data transfer rates of up to 13 mega-transfers per second to a scanner module. The system provides single-bunch tracking, bunch-to-bunch measurements, fast digital-averaged positions, beam position history buffering, and synchronized multi-turn measurements. Data is accessible to the control system VME crates via an MXI bus. Dedicated high-speed ports are provided to supply position data to beam orbit feedback systems

Keywords

beam handling techniques; computerised control; data acquisition; electron accelerators; nuclear electronics; particle beam diagnostics; peripheral interfaces; physical instrumentation control; physics computing; position measurement; storage rings; 1104 m; APS storage ring; Advanced Photon Source; MXI bus; VXI crate; VXI local bus; beam orbit feedback systems; beam position history buffering; beam position monitor data acquisition; bunch-to-bunch measurements; control system; data transfer rates; dedicated high-speed ports; electronics; fast digital-averaged positions; position data; scanner module; single-bunch tracking; synchronized multiturn measurements; turn-by-turn measurements; Backplanes; Control systems; Data acquisition; Extraterrestrial measurements; History; Monitoring; Optical feedback; Optical fibers; Position measurement; Storage rings;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309140

Filename

309140