Initial thermal characterization of the Cornell cold neutron source

Journal Article · Sun Dec 31 04:00:00 EST 1995 · Transactions of the American Nuclear Society

OSTI ID:411612

Spern, S A; Atwood, A G; Clark, D D; Hossain, T Z ^[1]

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1. Cornell Univ., Ithaca, NY (United States)

The completed full-scale Cornell cold neutron source, an integral component of the Cornell cold neutron beam facility, has undergone testing prior to its insertion (and consequent activation) in the Cornell 500-kW TRIGA reactor. The source consists of an organic moderator (mesitylene) contained within an aluminum chamber, which is cooled by conduction through a 99.999+ pure 1.90-cm-diam copper rod 267 cm long, coupled to the second (4-W capacity), cooler stage of a helium cryorefrigerator. Approximately 18 h is required to achieve equilibrium chamber temperatures. To lower the radiational T 4 load on the second stage, the chamber and rod are surrounded by an active heat shield, consisting of 99.99+ pure copper (oxygen-free high conductivity) coupled to the first 60-W capacity stage of the cryorefrigerator. Other components include the associated mesitylene handling system (MHS) and vacuum system.

• OSTI ID: 411612
• Report Number(s): CONF-951006--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 73; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
22 GENERAL STUDIES OF NUCLEAR REACTORS
COLD NEUTRONS
CORNELL TRIGA-MK-2 REACTOR
MESITYLENE
NEUTRON SOURCE FACILITIES
NEUTRON SOURCES
SILICON DIODES
TESTING