Lawrence Berkeley Laboratory general-purpose magnetic-measurement data-acquisition system

Conference · Mon Aug 01 00:00:00 EDT 1983

OSTI ID:5746395

Green, M I; Nelson, D H

The Lawrence Berkeley Laboratory (LBL) Magnetic Measurements Engineering (MME) Group has developed a Real-Time Data Acquisition System (DAS) for magnetic measurements. The design objective was for a system that was versatile, portable, modular, expandable, maintainable, quickly and easily reconfigurable both in hardware and software, and inexpensive. All objectives except the last were attained. An LSI 11/23 microcomputer is interfaced to a clock-calendar, printer, CRT control terminals, plotter with hard copy, floppy and hard disks, GPIB, and CAMAC buses. Off-the-shelf hardware and software have been used where possible. Operational capabilities include: (1) measurement of high permeability materials, (2) harmonic error analysis of (a) superconducting dipoles and (b) rare earth cobalt (REC) and conventional quadrupole magnets, and (3) 0.1% accuracy x-y mapping with Hall probes. Results are typically presented in both tabular and graphical form during measurements. Only minutes are required to switch from one measurement capability to another. Brief descriptions of the DAS capabilities, some of the special instrumentation developed to implement these capabilities, and some planned developments are given.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5746395
• Report Number(s): LBL-15865; CONF-830971-6; ON: DE84001101
• Resource Relation: Conference: 8. international conference on magnet technology and exhibition, Grenoble, France, 5 Sep 1983
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
DATA ACQUISITION SYSTEMS
REAL TIME SYSTEMS
MAGNETIC PROPERTIES
CAMAC SYSTEM
COMPUTER CODES
EQUIPMENT INTERFACES
HARMONICS
MAGNETIC SUSCEPTIBILITY
SUPERCONDUCTING MAGNETS
USES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
OSCILLATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTING DEVICES
440300* - Miscellaneous Instruments- (-1989)