Conceptual design of the TRIUMF thermal neutron facility

TRIUMF: Canada's national laboratory for particle and nuclear physics

Conceptual design of the TRIUMF thermal neutron facility Thorson, I. M.; Arrott, A. S.

Abstract

The report describes the conceptual design of the proposed thermal neutron facility (TNF) based on the neutron source produced by dumping the residual beam from the main TRIUMF proton beam line into a high atomic weight target. The maximum useful thermal neutron flux in a water-reflected, 120 cm diam heavywater- graphite moderator assembly surrounding a 15 cm diam Pb-Bi target is ~0.9 x 10¹³ cmｰ² secｰ¹ at 50 kW residual beam power; this figure is higher by a factor of ~2.5 for a natural uranium target. The neutron irradiation and beam tube facilities are described as well as facilities for carrying out proton beam irradiations. Heat dissipation and residual activity problems are discussed and a preliminary cost estimate is given. The total estimated cost, without any contingency allowance, is $434,000, of which 60% is for shielding.

Item Metadata

Title	Conceptual design of the TRIUMF thermal neutron facility
Alternate Title	TRIUMF brown reports TRI-71-3
Creator	Thorson, I. M.; Arrott, A. S.
Publisher	TRIUMF
Date Issued	1971-07
Description	The report describes the conceptual design of the proposed thermal neutron facility (TNF) based on the neutron source produced by dumping the residual beam from the main TRIUMF proton beam line into a high atomic weight target. The maximum useful thermal neutron flux in a water-reflected, 120 cm diam heavywater- graphite moderator assembly surrounding a 15 cm diam Pb-Bi target is ~0.9 x 10¹³ cmｰ² secｰ¹ at 50 kW residual beam power; this figure is higher by a factor of ~2.5 for a natural uranium target. The neutron irradiation and beam tube facilities are described as well as facilities for carrying out proton beam irradiations. Heat dissipation and residual activity problems are discussed and a preliminary cost estimate is given. The total estimated cost, without any contingency allowance, is $434,000, of which 60% is for shielding.
Subject	Design study
Genre	Report
Type	Text
Language	eng
Date Available	2016-04-07
Provider	Vancouver : University of British Columbia Library
Rights	Attribution-NonCommercial-NoDerivatives 4.0 International
DOI	10.14288/1.0302687
URI	http://hdl.handle.net/2429/57477
Affiliation	TRIUMF
Peer Review Status	Unreviewed
Scholarly Level	Researcher
Copyright Holder	TRIUMF
Rights URI	http://creativecommons.org/licenses/by-nc-nd/4.0/
Aggregated Source Repository	DSpace

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