Neutron calibration techniques for comparison of tokamak results

Journal Article · Thu Nov 01 00:00:00 EST 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141558· OSTI ID:6225354

Strachan, J D ^[1]; Adams, J M ^[2]; Barnes, C W ^[3]; Batistoni, P ^[4]; Bosch, H ^[5]; Brzosko, J S ^[6]; England, A C ^[7]; Fiore, C L; Granetz, R S ^[8]; Hendel, H W ^[1]; Hoenen, F ^[9]; Jarvis, O N ^[10]; Jassby, D L; Ku, L P; Liu, P ^[1]; Ma,

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1. Plasma Physics Laboratory, Princeton University, Princeton, NJ (USA)
2. AEA Industrial Technology, Harwell Laboratory, Oxon OX11 ORA (United Kingdom)
3. Los Alamos National Laboratory, Los Alamos, NM (USA)
4. Frascati Energy Research Center, 1000044 Frascati, Rome (Italy)
5. Max Planck Institut fuer Plasmaphysik, D-8046 Garching (Federal Republic of Germany)
6. Stevens Institute of Technology, Hoboken, NJ (USA)
7. Oak Ridge National Laboratory, Oak Ridge, TN (USA)
8. Plasma Fusion Center, MIT, Cambridge, MA (USA)
9. Kernforschungsanlage Julich GmbH, Julich 1 (Federal Republic of Germany)
10. JET, Abingdon, Oxfordshire OX14 3EA (United Kingdom)

A workshop on 1--3 August 1989 reviewed the techniques, uncertainties, and experiences of neutron calibration on PLT, TFTR, JET, Tore Supra, JT-60, JIPPT-IIU, Alcator C-Mod, ATF, FT, ASDEX, Textor, and DIII-D. In the summary session, the workshop participants discussed possible consensus neutron calibration techniques appropriate to D-D plasmas in tokamaks. The application of such techniques would facilitate a more accurate comparison of neutron yields from different devices, and also allow new calibration techniques to relate their precision to a reference value. General agreement was reached on the suitability of two techniques: (1) a {sup 252}Cf source calibration of epithermal neutron detectors, and (2) threshold neutron activation of Ni foils placed vertically above or below the plasma. This paper will present details on detector positioning, neutron transport calculations, and interlab normalization needed to accomplish the standardized calibration using a Cf neutron source.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6225354
• Journal Information: Review of Scientific Instruments; (USA), Vol. 61:11; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NEUTRON SOURCES
CALIBRATION STANDARDS
PLASMA DIAGNOSTICS
NEUTRON DETECTORS
TOKAMAK DEVICES
CALIFORNIUM 252
COMPARATIVE EVALUATIONS
DEUTERIUM
NEUTRON TRANSPORT
POSITIONING
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
CLOSED PLASMA DEVICES
EVEN-EVEN NUCLEI
HEAVY NUCLEI
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
NEUTRAL-PARTICLE TRANSPORT
NUCLEI
ODD-ODD NUCLEI
PARTICLE SOURCES
RADIATION DETECTORS
RADIATION SOURCES
RADIATION TRANSPORT
RADIOISOTOPES
STABLE ISOTOPES
STANDARDS
THERMONUCLEAR DEVICES
YEARS LIVING RADIOISOTOPES
700102* - Fusion Energy- Plasma Research- Diagnostics