Neutron Source - FRM II - Technische Universität München

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Neutron Source Neutron Source 6 / 7
The neutron source FRM II Powerful neutron source The neutron source Heinz Maier-Leibnitz (FRM II) is a beam tube reactor designed for providing neutrons to scientific experiments from all over the world as well as for medical and industrial applications. The FRM II is operated as a central scientific institution by the Technische Universität München (TUM) in Garching near Munich, Germany. Its first criticality was reached in March 2004. SR-1 SR-6 SR-2 SR-10 SR-3 SR-9 SR-8 The FRM II is the most powerful neutron source in Germany and reaches the highest neutron flux (8·10 14 neutrons/cm 2 s) relative to its thermal power (20 MW) throughout the world. More than 30 experimental facilities will be operated by scientific teams from German universities, research institutes of the Helmholtz Association and the Max-Planck- Society at the neutron source. Today, 23 of these facilities are operational. Further 7 irradiation facilities mainly for medical purposes are in service, an irradiation facility for the production of the medical isotop 99 Mo is under construction. The FRM II is equipped with cold, thermal, hot and even fast fission neutron sources and thus covers a broad range of applications, including experiments with positrons. Fuel element The FRM II has been designed for an exclusive purpose: the production of neutron beams. Its high performance is based on the concept of a compact core: a single, cylindrical fuel element with a diameter of just 24 centimetres is sufficient for 60 days of reactor operation. The fuel zone measures 70 centimetres and contains 8 kilograms of uranium in the form of U 3 Si 2 . Like other high-performance neutron sources around the world, the FRM II uses highly enriched uranium. This leads to a high neutron flux heavy concrete shielding beam tube cold neutron source fuel element hot neutron source Figure 1: Horizontal section of the reactor pool showing the beam tubes, fuel element, as well as cold and hot neutron source. Beam tube 1, 2 and 4 are fed by the cold source, number 9 by the hot source. The through-going beam tube no. 6 will be used by the ultra cold neutron source. The converter plate for fast neutrons supplies beam tube no. 10 with the tumour treatment facility. The remaining beam tubes are placed into the highest neutron flux taking up the thermal neutrons. SR-4 SR-5 SR-7 SR-6 converter facility
Page 2 and 3: Experimental facilities Forschungs-
Page 4: Imaging ANTARES cold neutron radiog
Page 10 and 11: producing a minimal amount of radio
Page 12 and 13: Φ(λ)*4π / 1/cm 2 sÅ 10 15 10 14
Page 14 and 15: Figure 2: Floorplan of the FRM II w
Page 16 and 17: Diffraction 14 / 15
Page 18 and 19: Technical Data Primary beam • Bea
Page 20 and 21: Technical Data Beam-tube SR9 (hot s
Page 22 and 23: Technical Data Primary beam (HEiDi)
Page 24 and 25: Technical Data Monochromator Ge(551
Page 26 and 27: Technical Data Neutron beam SR3 the
Page 28 and 29: Technical Data Primary beam • Neu
Page 30 and 31: Technical Data MIRA-1 MIRA-2 Primar
Page 32 and 33: SANS & Reflectometry 30 / 31
Page 34 and 35: Sample Environment • Rheometer sh
Page 36 and 37: Sample Environment • Rheometer sh
Page 38 and 39: Typical Applications: • Bridge be
Page 40 and 41: Sample Environment • High tempera
Page 42 and 43: Sample Environment The optimal samp
Page 44 and 45: Technical Data Monochromator Type:
Page 46 and 47: Sample Environment The optimal samp
Page 48 and 49: Spectroscopy 46 / 47
Page 50 and 51: Technical Data Primary beam Beam tu
Page 52 and 53: Technical Data Monochromators • P
Page 54 and 55: Sample Environment Besides the stan
Page 56 and 57: Figure 2: Dynamic range of the TOFT
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Typical Applications • Hyperfine
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tight chamber surrounding the sampl
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Typical Applications The spin echo
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Technical Data Monochromator • Ne
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Imaging 64 / 65
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Sample Environment FRM II standard
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Figure 1: Selected examples of stud
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Positrons Diffraction 70 / 71
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The positron beam facility The prim
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PAES positron annihilation induced
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SPM Description The Munich scanning
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Nuclear and Particle Physics 78 / 7
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Technical Data Neutron beam Cold ne
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Technical Data Neutron beam • End
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Irradiation facilities The irradiat
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Irradiation facilities Figure 1: A
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SE sample environment and user faci
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SE High and low temperatures, press
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HT Adapted to the needs of differen
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LT The FRM II sample environment gr
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LT CCI - low temperature inserts To
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HP HPG - 10kbar To load gas pressur
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User office 102 / 103
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During a meeting at the FRM II thes
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visit at the FRM II or it is more t
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Technische Universität Darmstadt F
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Imprint Publisher Board of Director
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Neutron Source - FRM II - Technische Universität München

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