[Neutron] Webinar on 23 May: "An LEU Core Design for FRM II Conversion" by Christian Reiter

[Karin Griewatsch]

Dear colleagues,

we hope to "see" you at the KFN Neutron Webinar by Christian Reiter:

Friday, 23 May 2025, 11:00 - 12:00 CET


    *An LEU Core Design for FRM II Conversion - A Reactor Physics Overview*


      Dr. Christian Reiter

Head of Reactor Physics, FRM II, TUM
Instrumentation Prize for Neutron Research awardee 2024

Zoom link: 
https://fz-juelich-de.zoom.us/j/64141367598?pwd=E9Pr5XOLtFqIlyBkdNb9KbaDdoTEuZ.1
Meeting-ID: 641 4136 7598
Passcode: 365979

The conversion of the FRM II from highly enriched uranium (HEU) to low 
enriched uranium (LEU) presents unique reactor physics challenges. This 
presentation will provide an overview of the reactor physics 
considerations in the design of an LEU core, focusing on key parameters 
that influence its neutronic and thermal-hydraulic behavior. The change 
in moderation ratio due to the modified fuel and fuel element geometry 
will be discussed, highlighting its effects on the neutron flux 
distribution and the reactor performance. In addition, the influence of 
secondary sources on the fuel element will be examined, particularly in 
the context of the scientific performance of the instruments. A crucial 
aspect of the conversion is the use of monolithic Uranium-Molybdenum, a 
novel high-density LEU fuel, which requires thorough characterization to 
provide accurate input data for reactor simulations. The presentation 
will highlight the importance of experimental validation and fuel 
qualification to ensure the safe operation of the converted reactor 
without losing scientific performance.

The lecture will be recorded, and there is information on data protection at
https://www.sni-portal.de/en/files/kfn-neutron-webinar-data-protection

On the website
https://www.sni-portal.de/en/user-committees/committee-research-with-neutrons/neutron-webinar
you will find announcements of upcoming lectures and the link for the 
webinar mailing list.

The following webinar will be on 27 June by Paul Zakalek on "High 
Current Accelerator-driven Neutron Sources - The HBS project for a next 
generation neutron facility".

Kind regards,
Frank Schreiber (KFN chair)
Thomas Gutberlet (Webinar organization)
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