Organisation: National
Institute of Standards and Technology
Installation: NBSR, operational since 1967
Type: pool reactor, 20 MW, HEU, D2O reflector, Øth=4·1014
n/cm²s,
Address: 100 Bureau Drive
Gaithersburg, MD 20899, USA
Home page: http://rrdjazz.nist.gov
Contact: Dr. Robert ("Bob") E.
Williams
Phone / fax: +1 301-975-6876, fax: +1 301-921-9847
e-mail: robert.williams@nist.gov
CNS: operating since 1995
moderator: H2 temperature: 20 K
effective volume: 5 L phase: liquid
pressure: 100 kPa power: 1200 W
material: chamber: Al 6061 vacuum
thimble: Al 6061
refrigerator: CVI (Columbus OHIO),1 screw,
heat removal: gravity (thermal siphon)
performance: see http://www.ncnr.nist.gov/coldgains/
(April 2002)
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remark: reactor does not need to shut down in case of
CNS failure (room temperature cooling loop).
recent publications: Proc. IGORR9
(Sydney 2003): SNS-04 (session 4)
Symposium in
Commemoration of the 10th Anniversary of HANARO -
Daejeon, Korea, April 2005: "Issues in the
Design of a Cold Neutron Source" by Mike Rowe (now retired).
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UCN group around M. Scott Dewey and
Geoffrey Greene, P.R. Huffman
On a cold neutron beam: Superfluid 4He, cooled below 1K,
magnetic confinement,
Home page: http://www.itl.nist.gov/div898/pubs/ar/ar2000/node18.html
recent publication: "Measurement
of the neutron lifetime by counting trapped protons in a cold neutron
beam"
by M. Scott Dewey at the 5th UCN/CN Workshop in Peterhof (RU) 2005
See also
"Progress towards Precision Measurement of the Neutron Lifetime using
Magnetically Trapped Ultracold Neutrons" by L. Yang at same workshop 2005.