Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers

To exploit the full potential of radio measurements of cosmic-ray air showers at MHz frequencies, a detector timing synchronization within 1 ns is needed. Large distributed radio detector arrays such as the Auger Engineering Radio Array (AERA) rely on timing via the Global Positioning System (GPS) f...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, Hansen, Patricia María, Jarne, Cecilia Gisele, Mariazzi, Analisa Gabriela, Sciutto, Sergio Juan, Wahlberg, Hernán Pablo, The Pierre Auger Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
Astroparticles
Pierre Auger
Clusters
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97890
https://ri.conicet.gov.ar/11336/62554
http://iopscience.iop.org/article/10.1088/1748-0221/11/01/P01018/meta
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97890
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Astroparticles
Pierre Auger
Clusters
spellingShingle Ciencias Exactas
Física
Astroparticles
Pierre Auger
Clusters
Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
topic_facet Ciencias Exactas
Física
Astroparticles
Pierre Auger
Clusters
description To exploit the full potential of radio measurements of cosmic-ray air showers at MHz frequencies, a detector timing synchronization within 1 ns is needed. Large distributed radio detector arrays such as the Auger Engineering Radio Array (AERA) rely on timing via the Global Positioning System (GPS) for the synchronization of individual detector station clocks. Unfortunately, GPS timing is expected to have an accuracy no better than about 5 ns. In practice, in particular in AERA, the GPS clocks exhibit drifts on the order of tens of ns. We developed a technique to correct for the GPS drifts, and an independent method is used to cross-check that indeed we reach a nanosecond-scale timing accuracy by this correction. First, we operate a “beacon transmitter” which emits defined sine waves detected by AERA antennas recorded within the physics data. The relative phasing of these sine waves can be used to correct for GPS clock drifts. In addition to this, we observe radio pulses emitted by commercial airplanes, the position of which we determine in real time from Automatic Dependent Surveillance Broadcasts intercepted with a software-defined radio. From the known source location and the measured arrival times of the pulses we determine relative timing offsets between radio detector stations. We demonstrate with a combined analysis that the two methods give a consistent timing calibration with an accuracy of 2 ns or better. Consequently, the beacon method alone can be used in the future to continuously determine and correct for GPS clock drifts in each individual event measured by AERA.
format Articulo
Articulo
author Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_facet Dova, María Teresa
Hansen, Patricia María
Jarne, Cecilia Gisele
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_sort Dova, María Teresa
title Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
title_short Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
title_full Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
title_fullStr Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
title_full_unstemmed Nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
title_sort nanosecond-level time sinchronization of autonomous radio detector stations for extensive air showers
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/97890
https://ri.conicet.gov.ar/11336/62554
http://iopscience.iop.org/article/10.1088/1748-0221/11/01/P01018/meta
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