View source for FRM II

{{Short description|German nuclear research reactor}}
{{Science with neutrons}}
The '''Research Neutron Source Heinz Maier-Leibnitz''' ('''Forschungsreaktor München II''' or '''FRM II''') ({{langx|de|Forschungs-Neutronenquelle Heinz Maier-Leibnitz}}) is a leading German [[research reactor]] and [[neutron source]], named in honor of the physicist [[Heinz Maier-Leibnitz]] who had conducted a highly successful research program at its predecessor, the {{ill|FRM I|de|Forschungsreaktor München}}. Operated by the [[Technical University of Munich]], it is located on its [[Campus Garching|campus in Garching]].
== Overview ==
[[File:Fmr.jpg|thumb|left|Research reactor Munich I (foreground) and II (background)]]
The FRM II is located in the immediate neighbourhood of FRM I, on the research and university campus near [[Garching]] (18&nbsp;km north of [[Munich]]). It is operated by the [[Technical University of Munich]]. Several other universities and research institutions are taking part in the scientific use.
The reactor was built by [[Siemens]]. It went critical on March 2, 2004, and reached the full power of 20 MW on August, 24. Since April 2005, it is in routine operation. The regular schedule comprises 4 reactor cycles per year, with 60 days per cycle.
Highly enriched uranium in a high-density uranium silicide-aluminium dispersion fuel element yields an excellent ratio of neutron flux to thermal power.  A liquid deuterium moderator ("cold source") gives a world-leading cold-neutron flux density.
== Usage ==
The FRM II is optimized for neutron scattering experiments at beam tubes and neutron guides. Furthermore, there are irradiation facilities, for example to produce medically used radioisotopes (as Lu-177), and a tumour treatment facility.
The more than 25 scientific instruments are operated by different chairs of the TU München, other universities, Helmholtz Centres and Max-Planck Institutes. The Jülich Centre for Neutron Science (JCNS) of the Forschungszentrum Jülich operates its own outstation at the FRM II.
Each instrument offers 2/3 of its beam time for scientists from all over the world. 30 percent is foreseen for industrial use.<ref>http://cdn.frm2.tum.de/fileadmin/stuff/instruments/BlueBook/exp-fac_cs4_Januar2011_verlinkt2.pdf {{Bare URL PDF|date=March 2022}}</ref>
== References ==
{{Reflist}}
== External links ==
{{Commons category}}
* http://www.frm2.tum.de website
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[[Category:Nuclear research reactors]]
[[Category:Technical University of Munich]]
[[Category:Neutron facilities]]
[[Category:Research institutes in Germany]]
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