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Advertising division: IKP - Nuclear Physics Institute
Reference number: 2020-062

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The Neutrino group at the Institute of Nuclear Physics - Experimental Hadron Dynamics http://collaborations.fz-juelich.de/ikp/neutrino/index.html was established in November 2015. Since then it has grown to a dynamic and international group of more than 10 people. The group is specialized in the neutrino physics with liquid scintillator-based detectors and is involved in the data analysis of the Borexino experiment in Italy and is a part of the JUNO collaboration. JUNO detector will be the first multi-kton liquid scintillator detector ever built, currently under construction in Jiangmen, China. Its completion is planned for 2021. During the filling of JUNO detector, the radiopurity of the liquid scintillator will be monitored by the 20-ton OSIRIS pre-detector.

We are looking to recruit a

Postdoc in Experimental Neutrino Physics - Participation at JUNO/OSIRIS project

Your Job:

The group is responsible for the calibration of the OSIRIS detector with radioactive sources and is involved in the development of the OSIRIS online software. The radioactive sources will be employed with the help of the ACU (Automatic Calibration Unit) kindly provided by the Daya Bay collaboration. A substantial effort is ongoing in order to adapt the unit in OSIRIS and plan the whole calibration procedure with a minimal risk of the contamination of the LS. The detector will be equipped with 80 iPMTs with on-board digitization and a trigger-less readout scheme. The waveforms of individual photoelectrons will be digitized directly at the PMTs and sent, together with a synchronized time stamp, to the outside DAQ system. Here, a dedicated “event builder” software will sort the waveforms and will build the "offline trigger" and an event.

Your tasks in detail:

  • Development of the OSIRIS online event builder software
  • Co-supervision of a PhD student already involved in the online DAQ software development
  • Coordination of the calibration of the OSIRIS detector with the help of an advanced PhD student
  • Involvement in the use and development of the Monte Carlo simulation, reconstruction, analysis software
  • Active participation during the OSIRIS installation in Jiangmen underground laboratory in China, scheduled to start in early 2021
  • Analyis of the first OSIRIS data and calibration data
  • Participation and presentation of the progress reports at JUNO collaboration meetings in China and in several European countries
  • Disseminate world-class research via publications and conference presentations
  • Availability for Co-supervision of future students joining the group

Your Profile:

  • PhD degree in experimental physics
  • Experience in data analysis and online software development
  • Very good command of written and spoken English
  • Initiative character, creativity, good interpersonal, communication and presentation skills, result orientation and analytical skills
  • Ability to work independently

Our Offer:

  • Membership in the JUNO collaboration
  • Exciting working environment on an attractive research campus with excellent infrastructure, located between the cities of Cologne, Düsseldorf, and Aachen
  • International and interdisciplinary working atmosphere
  • Promoting professional development through participation in national and international conferences and through various training programs
  • Flexible working hours and various opportunities to reconcile work and private life
  • 2 years working contract
  • Full-time position with the option of slightly reduced working hours
  • Salary and social benefits in conformity with the provisions of the Collective Agreement for the Civil Service (TVöD)


Forschungszentrum Jülich promotes equal opportunities and diversity in its employment relations.

We also welcome applications from disabled persons.