A bi-directional fixed-latency clock distribution system
The Askar'yan Radio Array (ARA) Collaboration is constructing a giant array of radio-frequency antennas deployed in the ice near the geographic South Pole. This experiment aims at detecting the extremely weak signal of neutrinos with energies in excess of 100 PeV from ultrahigh-energy cosmic ra...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/178009 2023-05-15T18:22:49+02:00 A bi-directional fixed-latency clock distribution system Yifan, Yang Ó Murchadha, Aongus Meures, Thomas Korntheuer, Michaël Hanson, Kael 2013 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/178009 https://dipot.ulb.ac.be/dspace/bitstream/2013/178009/1/Elsevier_161636.pdf en eng uri/info:doi/10.1016/j.nima.2013.08.007 uri/info:pii/S0168900213011339 uri/info:scp/84889095767 https://dipot.ulb.ac.be/dspace/bitstream/2013/178009/1/Elsevier_161636.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/178009 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 732 Physique des particules élémentaires Astrophysique Data acquisition Distributed sensors Electronics Fiber optic communications Neutrino astrophysics Time synchronization info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2013 ftunivbruxelles 2022-06-12T20:37:31Z The Askar'yan Radio Array (ARA) Collaboration is constructing a giant array of radio-frequency antennas deployed in the ice near the geographic South Pole. This experiment aims at detecting the extremely weak signal of neutrinos with energies in excess of 100 PeV from ultrahigh-energy cosmic ray interactions with the cosmic microwave background radiation. The antennas are located in shallow holes drilled to depths of 200 m and need high fidelity RF signal transmission over extended lengths to the data acquisition logic at the surface. We report on a transmission scheme whereby signals are digitized in the ice and the waveforms are digitally sent via high-speed serial links. Reconstruction algorithms require distribution of a low-jitter clock from the surface down to the digitization boards in the holes with knowledge of the overall time delay between the two clock domains. Previously, we designed a clock synchronization system using electrical signaling over CAT5. This year we have updated our solution to optical fibers using high speed transceiver blocks in Spartan-6 FPGAs. This note describes our improvements on the latter solution: technical details as well as methods of maintaining a fixed phase between two clocks after power cycles and resets. © 2013 Elsevier B.V. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper South pole DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) South Pole |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Physique des particules élémentaires Astrophysique Data acquisition Distributed sensors Electronics Fiber optic communications Neutrino astrophysics Time synchronization |
spellingShingle |
Physique des particules élémentaires Astrophysique Data acquisition Distributed sensors Electronics Fiber optic communications Neutrino astrophysics Time synchronization Yifan, Yang Ó Murchadha, Aongus Meures, Thomas Korntheuer, Michaël Hanson, Kael A bi-directional fixed-latency clock distribution system |
topic_facet |
Physique des particules élémentaires Astrophysique Data acquisition Distributed sensors Electronics Fiber optic communications Neutrino astrophysics Time synchronization |
description |
The Askar'yan Radio Array (ARA) Collaboration is constructing a giant array of radio-frequency antennas deployed in the ice near the geographic South Pole. This experiment aims at detecting the extremely weak signal of neutrinos with energies in excess of 100 PeV from ultrahigh-energy cosmic ray interactions with the cosmic microwave background radiation. The antennas are located in shallow holes drilled to depths of 200 m and need high fidelity RF signal transmission over extended lengths to the data acquisition logic at the surface. We report on a transmission scheme whereby signals are digitized in the ice and the waveforms are digitally sent via high-speed serial links. Reconstruction algorithms require distribution of a low-jitter clock from the surface down to the digitization boards in the holes with knowledge of the overall time delay between the two clock domains. Previously, we designed a clock synchronization system using electrical signaling over CAT5. This year we have updated our solution to optical fibers using high speed transceiver blocks in Spartan-6 FPGAs. This note describes our improvements on the latter solution: technical details as well as methods of maintaining a fixed phase between two clocks after power cycles and resets. © 2013 Elsevier B.V. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Yifan, Yang Ó Murchadha, Aongus Meures, Thomas Korntheuer, Michaël Hanson, Kael |
author_facet |
Yifan, Yang Ó Murchadha, Aongus Meures, Thomas Korntheuer, Michaël Hanson, Kael |
author_sort |
Yifan, Yang |
title |
A bi-directional fixed-latency clock distribution system |
title_short |
A bi-directional fixed-latency clock distribution system |
title_full |
A bi-directional fixed-latency clock distribution system |
title_fullStr |
A bi-directional fixed-latency clock distribution system |
title_full_unstemmed |
A bi-directional fixed-latency clock distribution system |
title_sort |
bi-directional fixed-latency clock distribution system |
publishDate |
2013 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/178009 https://dipot.ulb.ac.be/dspace/bitstream/2013/178009/1/Elsevier_161636.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 732 |
op_relation |
uri/info:doi/10.1016/j.nima.2013.08.007 uri/info:pii/S0168900213011339 uri/info:scp/84889095767 https://dipot.ulb.ac.be/dspace/bitstream/2013/178009/1/Elsevier_161636.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/178009 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1766202229331591168 |