A precision pure clock distribution system

Jonathan Brashear, Erich Frahm, Shilpi Jain, Roger Rusack, Rohith Saradhy

Research output: Contribution to journalConference articlepeer-review


Both the ATLAS and CMS Collaborations are planning to install new detectors designed to measure the time of arrival of particles produced at the CERN LHC to a precision of 30 ps or better. An essential component of any of these detectors is the reference clock that has to be distributed to multiple sites across the detector, aligned to better than 10 ps. This report describes a clock distribution system suitable for these large scale applications and the demonstration of the achievement of an inter-clock stability of less than 1 ps.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - 2019
Event2019 Topical Workshop on Electronics for Particle Physics, TWEPP 2019 - Santiago de Compostela, Spain
Duration: Sep 2 2019Sep 6 2019

Bibliographical note

Funding Information:
We are grateful to our collaborators from Saclay and the University of Notre Dame for their insightful comments on this work, and to the US National Science Foundation and to the US DOE for their support. We are also highly appreciative of the help, advice and use of the their instruments provided by the members of CERN High Performance Timing Distribution project.

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).


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