MWPC data acquisition in the Brookhaven FASTBUS
For Brookhaven AGS Experiment number 749, a data acquisition system to accomodate 12,256 wire multiwire proportional chambers (MWPCs) has been built in the context of the Brookhaven FASTBUS. Information about wires hit or continuous clusters of wires hit is encoded at the centroids of the clusters and number of wires in the clusters. The encoded information is stored in a stack memory in a FASTBUS module where it can be accessed by a FASTBUS master. Encoding time is less than 4 microseconds. Information as to the nature of the data is available in less than 200 nanoseconds. The system consists of three components: a board which amplifies, discriminates, digitally delays, latches, and does parallel to serial conversion of the hit information in the MWPCs; a module which encodes the serial data; and a simple interface board which controls communications and data flow between the latches and the encoder. The latch boards are PC layout, the interface is a small wirewrap card, and the encoder module is wirewrapped on the Brookhaven FASTBUS multi-purpose card. The system is built entirely from 10,000 series ECL components. This paper presents the design and operation of each of the system components.
- Research Organization:
- Yale University, New Haven, CT 06511
- OSTI ID:
- 6947209
- Report Number(s):
- CONF-831015-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 31:1; ISSN IETNA
- Country of Publication:
- United States
- Language:
- English
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATOR FACILITIES
ACCELERATORS
BROOKHAVEN AGS
CYCLIC ACCELERATORS
DATA ACQUISITION
DATA PROCESSING
DESIGN
EQUIPMENT INTERFACES
FASTBUS SYSTEM
INFORMATION RETRIEVAL
MEASURING INSTRUMENTS
MEMORY DEVICES
MULTIWIRE PROPORTIONAL CHAMBERS
PERFORMANCE
PROCESSING
PROPORTIONAL COUNTERS
RADIATION DETECTORS
SYNCHROTRONS
TIME INTERVAL ANALYZERS
TIMING PROPERTIES