The NA48 trigger supervisor

Author

Arcidiacono, R. ; Barberis, P.L. ; Benotto, F. ; Bertolino, F. ; Govi, G. ; Menichetti, E. ; Sozzi, M.

Author_Institution

Univ. degli Studi di Torino, Italy

Volume

2

fYear

2000

fDate

2000

Firstpage

16041

Abstract

The aim of the NA48 experiment at CERN SPS is to measure the direct CP violation in the neutral kaon system with an accuracy of 2×10^-4. This demanding sensitivity requires both very high statistics and detailed control of systematics. High performances of the trigger and acquisition systems are necessary. This paper describes the NA48 Trigger Supervisor, a 40 MHz pipelined hardware system which represents the Level 2 central decision system. It merges and processes the trigger informations coming from the local trigger sources, dedicated devices optimized to recognize charged and neutral two-pions decays. The final trigger packet includes the timestamp information, used in a pipeline read-out framework to retrieve detector data from the front-end memories. A description of the Trigger Supervisor design and of its functionality is given below

Keywords

drift chambers; liquid scintillation detectors; nuclear electronics; pipeline processing; trigger circuits; 40 MHz pipelined hardware system; Level 2 central decision system; NA48 trigger supervisor; acquisition systems; direct CP violation; neutral kaon system; pipeline read-out framework; timestamp information; Control systems; Data acquisition; Electromagnetic radiation; Hardware; Mesons; Particle beams; Pipelines; Protons; Radiation detectors; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.949937

Filename

949937