The data acquisition and control system for the 4{pi} detector CHIMERA

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.710955· OSTI ID:665251

Aiello, S; Anzalone, A; Cardella, G ^[1]

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1. Ist. Nazionale di Fisica Nucleare, Catania (Italy); and others

CHIMERA (Charged Heavy Ions Mass and Energy Resolving Array), a new 4{pi} detector for charged particles is under development at various sites of the Istituto Nazionale di Fisica Nucleare. This paper describes the new data acquisition system built to handle the signals coming out from the detector with a rate up to 1 kHz on almost 5000 electronic channels. The required average throughput for the system is in the order of the 1 MB/s. The used converters allow double-range conversion on 15 bits, in less than 50 {micro}s for all the 64 channels. The FDL link connects the different VME 9U crates performing a programmable hardware readout with a rate up to 100 MB/s. It uses a fast hardware protocol (Sparse Data Scan) to read the data buffers and send them to a FIC 8243 CPU board. A FIC 8243 dual-processor board forwards data (through Ethernet) to the analysis station (266 Mhz Digital AlphaStation or Sun Sparcstation). A DLT (Digital Linear Tape) unit connected to analysis station is used to store data. The new data acquisition system has been tested under beam conditions at the Laboratorio Nazionale del Sud (Catania, Italy) and at GANIL (Caen, France).

• OSTI ID: 665251
• Report Number(s): CONF-9709140--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 45; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CHARGED PARTICLE DETECTION
CONTROL SYSTEMS
DATA ACQUISITION SYSTEMS
DATA TRANSMISSION
FOUR-PI DETECTORS