dorsal/arxiv
View SchemaAn Overview of the LIGO Control and Data Acquisition System
| Authors | R. Bork, R. Abbott, D. Barker, J. Heefner |
|---|---|
| Categories | |
| ArXiv ID | physics/0111077 |
| URL | https://arxiv.org/abs/physics/0111077 |
| Journal | eConf C011127 (2001) TUBI001 |
Abstract
The LIGO Control and Data system (CDS) features a tightly coupled and highly integrated control and data acquisition system. Control of the interferometers requires many Multiple Input Multiple Output (MIMO) control loops closed both locally and across the 4-kilometer interferometer arm lengths. In addition to providing the closed loop control, the control systems front end processors act as Data Collection Units (DCU) for the data acquisition system. Data collected by these front ends and the data acquisition system must be collected and time stamped to an accuracy of 1 microsecond and made available to on-line analysis tools such as the Global Diagnostics System (GDS)[1]. Data is also sent to the LIGO Data Analysis System (LDAS)[2] for long-term storage and off-line analysis. Data rates exceed 5 Mbytes per second per interferometer continuous. Connection between the various front end processors and the data acquisition system is achieved using fiber optic reflective memory networks. Both controls and data acquisition systems use VME hardware and VxWorks operating systems. This paper will present an overview of the LIGO CDS and discuss key aspects of its design.
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"abstract": "The LIGO Control and Data system (CDS) features a tightly coupled and highly\nintegrated control and data acquisition system. Control of the interferometers\nrequires many Multiple Input Multiple Output (MIMO) control loops closed both\nlocally and across the 4-kilometer interferometer arm lengths. In addition to\nproviding the closed loop control, the control systems front end processors act\nas Data Collection Units (DCU) for the data acquisition system. Data collected\nby these front ends and the data acquisition system must be collected and time\nstamped to an accuracy of 1 microsecond and made available to on-line analysis\ntools such as the Global Diagnostics System (GDS)[1]. Data is also sent to the\nLIGO Data Analysis System (LDAS)[2] for long-term storage and off-line\nanalysis. Data rates exceed 5 Mbytes per second per interferometer continuous.\nConnection between the various front end processors and the data acquisition\nsystem is achieved using fiber optic reflective memory networks. Both controls\nand data acquisition systems use VME hardware and VxWorks operating systems.\nThis paper will present an overview of the LIGO CDS and discuss key aspects of\nits design.",
"arxiv_id": "physics/0111077",
"authors": [
"R. Bork",
"R. Abbott",
"D. Barker",
"J. Heefner"
],
"categories": [
"physics.ins-det",
"physics.gen-ph",
"physics.optics"
],
"journal_ref": "eConf C011127 (2001) TUBI001",
"title": "An Overview of the LIGO Control and Data Acquisition System",
"url": "https://arxiv.org/abs/physics/0111077"
},
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