“High precision synchronous timing in widely distributed scientific instrumentation (DaLaS)”.

Scientific manager: Dr.sc.comp. Ints Mednieks
Duration: 36 months, from 1.3.2017 to 29.2.2020.
Project co-financed by European Regional Development Fund (ERDF).
Central Finance and Contracting Agency (CFCA) Project No:
Planned costs: 517036 EUR, including 439481 EUR from ERDF.

The project aims at creation of synchronous timing system for scientific measurements using equipment widely distributed in different locations on Earth. In contrast to the available accurate time services, proposed system will ensure measurement timeline with higher accuracy. Such a system will use high-precision timing technology developed in the Institute of Electronics and Computer Science, providing a time interval measurement accuracy of few picoseconds, and being used in multiple satellite Laser Ranging stations within ILRS (see http://ilrs.gsfc.nasa.gov/).

In the project, it is planned to perform research for development of multifunctional timing device, experimental design of timing and clock distribution system for Jiangmen Underground Neutrino Observatory (international project JUNO (see https://en.wikipedia.org/wiki/Jiangmen_Underground_Neutrino_Observatory), clock adjustment instrumentation for networked systems.

Project Activities

On April 20-21

Researcher Vadim Vedin and senior researcher Ints Mednieks participated in “JUNO Electronics Workshop 2017” in Padova, Italy, to capture the status of electronics development for the JUNO (http://juno.ihep.cas.cn/ ) project and discuss cooperation for development of time synchronization system within this project.

20.06.2017. A progress report for the 1st phase (01.03.2017 - 31.05.2017) has been submitted for the ERAF project No “High precision synchronous timing in widely distributed scientific instrumentation (DaLaS)”

On July 17-21

From 17 to 21 July researcher Vadim Vedin participated in 10th JUNO Collaboration Meeting held at the Institute of High Energy Physics in Beijing and presented the IECS proposal for cooperation. The Institute proposes to address the measurement equipment synchronization issues in JUNO, using the high-precision time interval measurement technology developed in IECS.

On the basis of this proposal, the JUNO Institutional Board has granted IECS a full collaboration member status in JUNO (see http://juno.ihep.ac.cn/collaboration.php).

JUNO (Jiangmen Underground Neutrino Observatory (see http://juno.ihep.cas.cn/) is an international project initiated by China for creation of observatory for neutrino studies, in particular, to determine neutrino mass hierarchy and precisely measure oscillation parameters by detecting reactor neutrinos from the Yangjiang and Taishan Nuclear Power Plants, observe supernova neutrinos, study the atmospheric, solar neutrinos and geo-neutrinos, and perform exotic searches using a 20-thousand-ton liquid scintillator detector of unprecedented 3% energy resolution (at 1 MeV) at 700-meters deep underground. At present already 72 leading research organizations dealing with particle physics from all over the world are participating in this project. IECS will design specialized event timers for  obtaining accurate times of events on a time scale that is synchronized with UTC (Time Scale Coordinated).

Development of the Local Clock Distribution System (LCDS) is finished 31.08.2017. Operation principles, technical implementation and parameters are described in the Technical specification (TS14.pdf). It contains the Central Clock Distribution Unit (CCDU) receiving timing information from the external Time and Frequency Standard. Implemented prototype of the CCDU is illustrated below.

Central Clock Distribution Unit (CCDU)

Photo of the CCDU

15.09.2017. A progress report for the 2nd phase (01.06.2017 - 31.08.2017) has been submitted for the ERAF project No “High precision synchronous timing in widely distributed scientific instrumentation (DaLaS)”.


Latvian Patent No.15284 A „ NOTIKUMA TAIMERIS AR SISTEMĀTISKĀS TAIMĒŠANAS KĻŪDAS STABILIZĀCIJU/EVENT TIME-TAGGING DEVICE WITH STABILIZATION OF SYSTEMATIC ERROR”, Inventors: Vladimirs BESPAĻKO (LV), Jevgeņijs BULS (LV), Igors BURAKS (LV), Vadims VEDINS (LV) Applicant: Institute of Electronics and Computer Science. Published: 20.11.2017.