Fast shutter for low background radiation environments at SPR III

A fast shutter system has been developed to isolate experiments from the radiation emitted after the main pulse of the Sandia Pulsed Reactor, SPR III. In about 15 ms the system moves a 20 kg shield in front of the beam port aperture in the facility shield wall. A second gravity-driven shutter is dro...

Full description

Saved in:
Bibliographic Details
Published in:IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) 1994-12, Vol.41 (6), p.2125-2131
Main Authors: Kelly, J.G., Sites, K.R., Scott, W.H.
Format: Article
Language:English
Subjects:
Apertures
Attenuation
BIOLOGICAL SHIELDS
Delay
DESIGN
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Inductors
Laboratories
Neutrons
Nuclear physics
Other topics in elementary-particle and nuclear physics experimental methods and instrumentation
Other topics in elementary-particleand nuclear physics experimental methods and instrumentation
Physics
Pulse measurements
PULSED REACTORS
RADIATION FLUX
Radiation monitoring
REACTION PRODUCT TRANSPORT SYSTEMS
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
Scattering
SHIELDS 220600 > Nuclear Reactor Technology-- Research, Test & Experimental Reactors
SHUTTERS
SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
SPR-3 REACTOR
System testing
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A fast shutter system has been developed to isolate experiments from the radiation emitted after the main pulse of the Sandia Pulsed Reactor, SPR III. In about 15 ms the system moves a 20 kg shield in front of the beam port aperture in the facility shield wall. A second gravity-driven shutter is dropped into place in about 200 ms. The total attenuation achieved in the delayed beam intensity is about a factor of one hundred. The shutter assembly was used, along with a sensitive detection system, to observe the gamma ray flux emitted by various materials activated by the neutron beam at levels nine orders of magnitude smaller than the gamma dose rate at the target during the reactor pulse.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.340552