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Performance of the Texas cold neutron source

Conference · · Transactions of the American Nuclear Society; (United States)
OSTI ID:6982543
The recently completed Texas Cold Neutron Source (TCNSN) system consists of a cooled moderator, a neon heat pipe, a cryogenic refrigerator, and a neutron guide tube. The TCNS fits into the piercing beam port of the 1-MW TRIGA Mark II reactor at the Nuclear Engineering Teaching Laboratory of the University of Texas. The moderator chosen for the TCNS is mesitylene, 1,3,5-trimethylbanzene, which is cooled to [approximately]30 K in a 7.5-cm-diam, 2-cm-thick chamber located within the reactor graphite reflector. The mesitylene is cooled by a 3-m long, 1.9-cm-diam neon heat pipe attached to the cold head to a helium regrigerator outside the biological shield of the reactor. Neon gas is supplies from a 6-[ell] reservior pressurized to [approximately]1 MPa at room temperature. Cooling is needed to remove heat generated in the moderator by nuclear radiation. A value of <2 W of nuclear heating for the TCNS at full reactor power was calculated. This paper reports on the thermal performance of the TCNS.
OSTI ID:
6982543
Report Number(s):
CONF-921102--
Conference Information:
Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 66
Country of Publication:
United States
Language:
English