1 / 14

Relativistic Heavy Ion Collider (RHIC)

IMPLEMENTATION OF PC’S FOR MONITORING THE GROUND INTEGRITY DEVICE Jennie Burns, College of Arts and Sciences, Creighton University, Omaha, NE 68178. Relativistic Heavy Ion Collider (RHIC). located at Brookhaven National Laboratory (BNL) on Long Island, New York. STAR.

edita
Download Presentation

Relativistic Heavy Ion Collider (RHIC)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IMPLEMENTATION OF PC’S FOR MONITORING THE GROUND INTEGRITY DEVICEJennie Burns, College of Arts and Sciences, Creighton University, Omaha, NE 68178

  2. Relativistic Heavy Ion Collider (RHIC) • located at Brookhaven National Laboratory (BNL) on Long Island, New York STAR collide gold-gold nuclei in order to study nuclear matter created in a hot, dense state like that of 10-6 seconds after the Big Bang

  3. STAR Experiment • STAR (Solenoidal Tracker at RHIC) location of relativistic heavy ion collisions consists of several detectors for tracking and studying large numbers of charged particles emerging from collisions slow controls and collision data analysis

  4. Ground Integrity Device (GID) • detects deviations from earth ground • basis of all data and calculations of the experiment • data and calculations include measurements of energy • knowing these energies is vital in determining the particle’s properties • reads current

  5. Using Ground Ground - reference from which to measure voltage 2 Types: Earth Ground • earth ground as a reference voltage = 0V (i.e. 78 V with respect to 0V) • One cable from all hardware and electronics running physically into the Earth. • ground loops = destroyed electrical equipment • GID is the one reference point for the entire STAR experiment System Ground • Uses a voltage level inside system as a reference = 0V • All electrical happenings in building cause different potentials • Necessary for all hardware and electronics connect to a certain device with the reference value 0V • System grounds within experiment connected to chassis on platform (location of devices connected directly to experiment)

  6. Earth Ground System Ground GID

  7. Upgrade of GID monitored by journal entry periodically throughout the day GID is located in experiment hall connected to a PC placed within the Data Acquisition (DAQ) Room by cable • PC connected to local network makes it possible for GID readings to be directly monitored and archived in the main controls room

  8. GID DAQ Room Control Room

  9. Upgrade GID • use Linux operating system (alternative to Windows) for developing EPICS device support for GID • PC runs EPICS (Experimental Physics and Industrial Control System) • - framework for creating alarms, archives, control panels, displays, etc. • computer software is used for data sorting

  10. Upgrade of GID • GID raw data output: Original DataFormatted Data use data sorting software to easily format input data requires use of computer programming language of C and C++

  11. Upgrade of GID • processed data is sent into control panel (user interface) installed on same PC • PC connected to local network by ethernet • data is broadcasted, then accessed and monitored within the main controls room by use of the control panel

  12. Conclusion • make GID monitoring easily accessible • better isolate and quickly fix problems with GID or experiment • model for other various other upgrades of the STAR

  13. Acknowledgments • Brookhaven National Laboratory • United States Department of Energy • Creighton University High Energy Physics Group

  14. References • RHIC and STAR pictures provided by BNL website • Figure 1: http://www.lioby.com/im%5Cfence%5Cgroundrodclamp.jpg • Figure 2: http://ecmweb.com/ar/408ecwb15fig4.jpg

More Related