The second level trigger system of FAST

Martínez, G.; Barcyzk, A.; Berdugo, J.; Casaus, J.; Casella, Maria Chiara; De Laere, Samuel Rémi; Deiters, K.; Dick, P.; Kirkby, J.; Malgeri, L.; Mañá, C.; Marín, J.; Pohl, Martin; Petitjean, C.; Sánchez, E.; Willmott, C.

doi:10.1016/j.nima.2009.07.097

Scientific article

English

The second level trigger system of FAST

ContributorsMartínez, G.; Barcyzk, A.; Berdugo, J.; Casaus, J.; Casella, Maria Chiara; De Laere, Samuel Rémi; Deiters, K.; Dick, P.; Kirkby, J.; Malgeri, L.; Mañá, C.; Marín, J.; Pohl, Martin; Petitjean, C.; Sánchez, E.; Willmott, C.

Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, vol. 609, no. 2-3, p. 235-243

Publication date2009

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

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

MARTÍNEZ, G. et al. The second level trigger system of FAST. In: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2009, vol. 609, n° 2-3, p. 235–243. doi: 10.1016/j.nima.2009.07.097

Article (Published version)

Identifiers

PID : unige:41457
DOI : 10.1016/j.nima.2009.07.097

Additional URL for this publicationhttp://linkinghub.elsevier.com/retrieve/pii/S0168900209015988

Journal ISSN0168-9002

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The second level trigger system of FAST

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