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Sitemap > Bulletin Board > Diplomarbeiten, Bachelor- und Masterarbeiten > Master thesis: Steering of a Hydrogen Maser using an ensemble of clocks
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Master thesis: Steering of a Hydrogen Maser using an ensemble of clocks

17.05.2021, Diplomarbeiten, Bachelor- und Masterarbeiten

Project description/Projektbeschreibung: For geodetic instruments, like radio telescopes, laser ranging systems or global navigation satellite systems, a stable and accurate time reference is essential. Therefore the physical representation of UTC (Coordinated Universal Time) is realized at the Geodetic Observatory Wettzell by one master cesium atomic clock steered to UTC according to Circular-T products published by BIPM (International Bureau of Weights and Measures). However, in the current procedure only one clock represents UTC. At GO Wettzell we operate several atomic clocks and frequency standards, namely five cesium clocks, three hydrogen masers and recently one MuClock, which is a time and frequency reference based on quantum manipulation of laser cooled atoms. We would like to take advantage of this clock ensemble and steer the hydrogen masers for new representation of UTC at the observatory.

Aims of the project/Projektziele:
In this project we want to measure the time differences of all clocks against the master clock in a fast measurement loop. These data can be further used to control the hydrogen maser which on a long-term perspective will replace the cesium clock. The timing signals are distributed at the station using a newly operated optical timing system, which was developed in cooperation with Menlo Systems company. The time differences will be measured using our multichannel event timer NPET.
The project requires to review the measurement program, which records the raw measurements from NPET and develop a post processing software. The output of the software are processed time values, which lie at exactly the same time stamps for all clocks. These measured differences will be used for clock quality checks and as an input for the steering algorithm of primary hydrogen maser.

Skills/Kenntnisse:
This project requires basic knowledge in programming (C/C++, Python, Matlab or similar) and physics or electrical engineering.

Hinweis:
Dieser Projektvorschlag wird in Englisch veröffentlicht, um deutsche und internationale Studierende anzusprechen. Die Arbeit kann, wenn die Bedingungen der Prüfungsordnung es zu lassen, in Deutsch oder Englisch verfasst werden. Auch am Observatorium wird hauptsächlich deutsch gesprochen.

Kontakt: Jan Kodet: 09941/603-118, jan.kodet@tum.de