Computer controlled vacuum control system for synchrotron radiation beam lines
The increasing number and complexity of vacuum control systems at the Stanford Synchrotron Radiation Laboratory has resulted in the need to computerize its operations in order to lower costs and increase efficiency of operation. Status signals are transmitted through digital and analog serial data links which use microprocessors to monitor vacuum status continuously. Each microprocessor has a unique address and up to 256 can be connected to the host computer over a single RS232 data line. A FORTRAN program on the host computer will request status messages and send control messages via only one RS232 line per beam line, signal the operator when a fault condition occurs, take automatic corrective actions, warn of impending valve failure, and keep a running log of all changes in vacuum status for later recall. Wiring costs are thus greatly reduced and more status conditions can be monitored without adding excessively to the complexity of the system. Operators can then obtain status reports at various locations in the lab quickly without having to read a large number of meter and LED's.
- Research Organization:
- Stanford Synchrotron Radiation Laboratory, SLAC Bin-69, P.O. Box 4349, Stanford, CA 94305
- OSTI ID:
- 5302113
- Report Number(s):
- CONF-830311-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-30:4; ISSN IETNA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
COMPUTER CODES
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
COST
EFFICIENCY
ELECTRONIC CIRCUITS
FAILURES
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
NATIONAL ORGANIZATIONS
RADIATION SOURCES
STANFORD LINEAR ACCELERATOR CENTER
SYNCHROTRON RADIATION SOURCES
US DOE
US ERDA
US ORGANIZATIONS
VACUUM SYSTEMS