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Title

The second level trigger system of FAST
Authors
Martínez, G.
Barcyzk, A.
Berdugo, J.
Casaus, J.
Casella, Maria Chiara
De Laere, Samuel Rémi
Deiters, K.
Dick, P.
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Published in Nuclear Instruments and Methods in Physics Research. A. 2009, vol. 609, no. 2-3, p. 235-243
Abstract The Fibre Active Scintillator Target (FAST) experiment is a novel imaging particle detector currently operating in a high-intensity π+ beam at the Paul Scherrer Institute (PSI), Villigen, Switzerland. The detector is designed to perform a high precision measurement of the μ+ lifetime, in order to determine the Fermi constant, Gf, to 1 ppm precision. A dedicated second level (LV2) hardware trigger system has been developed for the experiment. It performs an online analysis of the π/μ decay chain by identifying the stopping position of each beam particle and detecting the subsequent appearance of the muon. The LV2 trigger then records the muon stop pixel and selectively triggers the Time-to-Digital Converters (TDCs) in the vicinity. A detailed description of the trigger system is presented in this paper.
Keywords Muon lifetime — Particle detectorinstrumentation — Triggersystems — FPGA
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Article (Published version) (801 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://linkinghub.elsevier.com/retrieve/pii/S0168900209015988
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Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire
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(ISO format) 		MARTÍNEZ, G. et al. The second level trigger system of FAST. In: Nuclear Instruments and Methods in Physics Research. A, 2009, vol. 609, n° 2-3, p. 235-243. https://archive-ouverte.unige.ch/unige:41457

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Deposited on : 2014-10-31

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