Published February 1983 | Version v1
Report Open

Data acquisition and control network

Creators

Description

We have participated in the construction of the CELLO detector on the PETRA e+e- Collider in Hamburg in order to test some of the current high energy physics theories. Some 60.000 channels collecting the detector informations are connected to the main computer through the CAMAC acquisition system and specialized ROMULUS subsystems. Each of these subsystems is monitored by its dedicated microprocessor using a CAMAC dataway spy module. All these microprocessors are connected to the main computer through a ''STAR'' type network. Data are read out by the main computer (PDP11-45) and concentrated in a circular type buffer. They are then filtered and transfered to a PDP11-55, also in the network, for storing

Availability note (English)

MF available from INIS under the Report Number.

Abstract (French)

En vue de verifier certaines theories sur la physique des interactions electrons-positrons, notre laboratoire a collabore dans la construction du detecteur CELLO aupres de l'anneau de collision PETRA a Hambourg (RFA). Les quelques 60.000 voies de mesures qui receptionnent les informations sont reliees au calculateur principal par le systeme d'acquisition CAMAC et les sous-systemes specialises ROMULUS. Chaque sous-systeme est equipe d'un microprocesseur accedant aux donnees a l'aide d'un systeme d'espionnage. Tous ces microprocesseurs sont relies au calculateur central par un reseau de type ETOILE. Les donnees sont acquises et centralisees par le calculateur principal (PDP11-45) dans une memoire tampon, a gestion de type circulaire. Elles sont ensuite transmises, apres filtrage, au PDP11-55, membre du reseau, pour le stockage

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Additional details

Additional titles

Original title (French)
Un systeme mini reseau d'acquisition et de controle des donnees

Publishing Information

Imprint Pagination
144 p.
Report number
CEA-N--2326

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
14774382
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Thesis, Computer Program Description
Descriptors DEI
CAMAC SYSTEM; COMPUTER NETWORKS; DATA ACQUISITION SYSTEMS; DATA PROCESSING; ELECTRON-POSITRON INTERACTIONS
Descriptors DEC
INTERACTIONS; LEPTON-LEPTON INTERACTIONS; PARTICLE INTERACTIONS

Optional Information

Notes
Computer PDP 11-45.