@misc{10481/76880,
year = {2022},
month = {7},
url = {https://hdl.handle.net/10481/76880},
abstract = {The KM3NeT Collaboration is currently constructing a multi-site high-energy neutrino telescope in the
Mediterranean Sea consisting of matrices of pressure-resistant glass spheres, each holding a set of 31 small-area
photomultipliers. The main goals of the telescope are the observation of neutrino sources in the Universe
and the measurement of the neutrino oscillation parameters with atmospheric neutrinos. A relative time
synchronisation between photomultipliers of the nanosecond order needed to guarantee the required angular
resolution of the detector. Due to the large detector volumes to be instrumented by KM3NeT, a cost reduction of
the different systems is a priority. To this end, the inexpensive Nanobeacon has been designed and developed
by the KM3NeT Collaboration to be used for detector time-calibration studies. At present, more than 600 Nanobeacons have been already produced. The characterisation of the optical pulse and the wavelength
emission profile of the devices is critical for the time calibration. The optical pulse rise time has been quantified
as less than 3 ns, while the Full Width Half Maximum is less than 6 ns. The wavelength drift, due to a variation
of the supply voltage, has also been qualified as lower than 10 nm for the full range of the Nanobeacon. In
this paper, more details about the main features of the Nanobeacon design, production and operation, together
with the main properties of the light pulse generated are described.},
organization = {French National Research Agency (ANR)},
organization = {European Commission	ANR-15-CE31-0020},
organization = {Centre National de la Recherche Scientifique (CNRS)		
Commission Europeenne (FEDER fund)		
Commission Europeenne (Marie Curie Program)		
Institut Universitaire de France (IUF)		
LabEx UnivEarthS, Paris Ile-de-France Region, France	ANR-10-LABX-0023	
ANR-18-IDEX-0001},
organization = {Shota Rustaveli National Science Foundation of Georgia (SRNSFG), Georgia	FR-18-1268},
organization = {German Research Foundation (DFG)},
organization = {Greek Ministry of Development-GSRT},
organization = {Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Universita e della Ricerca (MIUR), PRIN 2017 program, Italy	NAT-NET 2017W4HA7S},
organization = {Ministry of Higher Education Scientific Research and Professional Training, ICTP, Morocco	AF-13},
organization = {Netherlands Organization for Scientific Research (NWO)
Netherlands Government},
organization = {National Science Centre, Poland	2015/18/E/ST2/00758},
organization = {National Authority for Scientific Research (ANCS), Romania},
organization = {Ministerio de Ciencia, Innovacion, Investigacion.. Universidades (MCIU): Programa Estatal de Generacion de Conocimiento	PGC2018-096663-B-C41	
PGC2018-096663-A-C42	
PGC2018-096663-B-C43	
PGC2018-096663-B-C44},
organization = {Center for Forestry Research & Experimentation (CIEF)	PROMETEO/2020/019},
organization = {Generalitat Valenciana: Grisolia program	GRISOLIA/2018/119	
Generalitat Valenciana: GenT program	CIDEGENT/2018/034	
CIDEGENT/2019/043	
CIDEGENT/2020/049},
organization = {Junta de Andalucia	A-FQM-053-UGR18},
organization = {La Caixa Foundation	LCF/BQ/IN17/11620019},
organization = {EU: MSC program, Spain	101025085},
publisher = {Elsevier},
keywords = {Time calibration},
keywords = {Instrumentation},
keywords = {Neutrino telescopes},
title = {Nanobeacon: A time calibration device for the KM3NeT neutrino telescope},
doi = {10.1016/j.nima.2022.167132},
author = {Aiello, S. and Anguita López, Mancia and Díaz García, Antonio Francisco and Gutiérrez González, Miguel and López Coto, Daniel and Navas Concha, Sergio},
}