Labview Library to Epics Channel Access

Author

Liyu, A. ; Blokland, W. ; Thompson, D.

fYear

2005

fDate

16-20 May 2005

Firstpage

3233

Lastpage

3234

Abstract

The Spallation Neutron Source (SNS) accelerator systems will deliver a 1.0 GeV, 1.4 MW proton beam to a liquid mercury target for neutron scattering research. The accelerator complex consists of a 1 GeV linear accelerator, an accumulator ring and associated transport lines. The SNS diagnostics platform is PC-based and will run Windows for its OS and LabVIEW as its programming language. Data acquisition hardware will be based on PCI cards. There will be about 300 rack-mounted computers. The Channel Access (CA) protocol of the Experimental Physics and Industrial Control System (EPICS) is the SNS control system communication standard. This paper describes the approaches, implementation, and features of a LabVIEW library interface to CA for Windows, Linux, and Mac OS X. We also discuss how the library implements the asynchronous CA monitor routine using LabVIEW’s occurrence mechanism instead of a callback function (which is not available in LabVIEW). The library is used to acquire accelerator data and applications have been built on this library for console display and data-logging.

Keywords

Access protocols; Computer languages; Data acquisition; Hardware; Libraries; Linear accelerators; Neutron spin echo; Operating systems; Particle beams; Proton accelerators;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1591423

Filename

1591423