Jefferson Lab's Distributed Data Acquisition
Abstract
Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) occasionally experiences fast intermittent beam instabilities that are difficult to isolate and result in downtime. The Distributed Data Acquisition (Dist DAQ) system is being developed to detect and quickly locate such instabilities. It will consist of multiple Ethernet based data acquisition chassis distributed throughout the seven-eighths of a mile CEBAF site. Each chassis will monitor various control system signals that are only available locally and/or monitored by systems with small bandwidths that cannot identify fast transients. The chassis will collect data at rates up to 40 Msps in circular buffers that can be frozen and unrolled after an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults and be distributed via a custom fiber optic event trigger network. This triggering scheme will allow all the data acquisition chassis to be triggered simultaneously and provide a snapshot of relevant CEBAF control signals. The data will then be automatically analyzed for frequency content and transients to determine if and where instabilities exist.
- Authors:
-
- Jefferson Lab, 12000 Jefferson Avenue Newport News, VA 23606 (United States)
- Publication Date:
- OSTI Identifier:
- 20894918
- Resource Type:
- Journal Article
- Journal Name:
- AIP Conference Proceedings
- Additional Journal Information:
- Journal Volume: 868; Journal Issue: 1; Conference: 12. beam instrumentation workshop, Batavia, IL (United States), 1-4 May 2006; Other Information: DOI: 10.1063/1.2401408; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATOR FACILITIES; CEBAF ACCELERATOR; COMPUTERIZED CONTROL SYSTEMS; DATA ACQUISITION; DATA ACQUISITION SYSTEMS; ELECTRON BEAMS; INSTABILITY; SIGNALS
Citation Formats
Allison, Trent, and Powers, Tom. Jefferson Lab's Distributed Data Acquisition. United States: N. p., 2006.
Web. doi:10.1063/1.2401408.
Allison, Trent, & Powers, Tom. Jefferson Lab's Distributed Data Acquisition. United States. https://doi.org/10.1063/1.2401408
Allison, Trent, and Powers, Tom. 2006.
"Jefferson Lab's Distributed Data Acquisition". United States. https://doi.org/10.1063/1.2401408.
@article{osti_20894918,
title = {Jefferson Lab's Distributed Data Acquisition},
author = {Allison, Trent and Powers, Tom},
abstractNote = {Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) occasionally experiences fast intermittent beam instabilities that are difficult to isolate and result in downtime. The Distributed Data Acquisition (Dist DAQ) system is being developed to detect and quickly locate such instabilities. It will consist of multiple Ethernet based data acquisition chassis distributed throughout the seven-eighths of a mile CEBAF site. Each chassis will monitor various control system signals that are only available locally and/or monitored by systems with small bandwidths that cannot identify fast transients. The chassis will collect data at rates up to 40 Msps in circular buffers that can be frozen and unrolled after an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults and be distributed via a custom fiber optic event trigger network. This triggering scheme will allow all the data acquisition chassis to be triggered simultaneously and provide a snapshot of relevant CEBAF control signals. The data will then be automatically analyzed for frequency content and transients to determine if and where instabilities exist.},
doi = {10.1063/1.2401408},
url = {https://www.osti.gov/biblio/20894918},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 868,
place = {United States},
year = {Mon Nov 20 00:00:00 EST 2006},
month = {Mon Nov 20 00:00:00 EST 2006}
}