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Neutron time-of-flight counters and spectrometers for diagnostics of burning fusion plasmas

Technical Report:

Abstract

Experiment with burning fusion plasmas in tokamaks will place particular requirements on neutron measurements from radiation resistance-, physics-, burn control- and reliability considerations. The possibility to meet these needs by measurements of neutron fluxes and energy spectra by means of time-of-flight techniques are described. Reference counters and spectrometers are proposed and characterized with respect to efficiency, count-rate capabilities, energy resolution and tolerable neutron and {gamma}-radiation background levels. The instruments can be used in a neutron camera and are capable to operate in collimated neutron fluxes up to levels corresponding to full nuclear output power in the next generation of experiments. Energy resolutions of the spectrometers enables determination of ion temperatures from 3 (keV) through analysis of the Doppler broadening. Primarily, the instruments are aimed for studies of 14 (MeV) neutrons produced in (d,t)-plasmas but can, after minor modifications, be used for analysis of 2.45 (MeV) neutrons produced in (d,d)-plasma. (au) (33 refs.).
Publication Date:
Feb 01, 1991
Product Type:
Technical Report
Report Number:
TRITA-PFU-91-05
Reference Number:
SCA: 700320; PA: AIX-23:013621; SN: 92000639314
Resource Relation:
Other Information: PBD: Feb 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NEUTRON FLUX; TIME-OF-FLIGHT SPECTROMETERS; PLASMA DIAGNOSTICS; EXPERIMENTAL DATA; FAST NEUTRONS; ION TEMPERATURE; MEV RANGE 10-100; THERMONUCLEAR REACTIONS; TOKAMAK DEVICES; 700320; PLASMA DIAGNOSTIC TECHNIQUES AND INSTRUMENTATION
OSTI ID:
10111665
Research Organizations:
Royal Inst. of Tech., Stockholm (Sweden). Dept. of Plasma Physics and Fusion Research
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE92614452; TRN: SE9100267013621
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
SWDN
Size:
44 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Elevant, T, and Olsson, M. Neutron time-of-flight counters and spectrometers for diagnostics of burning fusion plasmas. Sweden: N. p., 1991. Web.
Elevant, T, & Olsson, M. Neutron time-of-flight counters and spectrometers for diagnostics of burning fusion plasmas. Sweden.
Elevant, T, and Olsson, M. 1991. "Neutron time-of-flight counters and spectrometers for diagnostics of burning fusion plasmas." Sweden.
@misc{etde_10111665,
title = {Neutron time-of-flight counters and spectrometers for diagnostics of burning fusion plasmas}
author = {Elevant, T, and Olsson, M}
abstractNote = {Experiment with burning fusion plasmas in tokamaks will place particular requirements on neutron measurements from radiation resistance-, physics-, burn control- and reliability considerations. The possibility to meet these needs by measurements of neutron fluxes and energy spectra by means of time-of-flight techniques are described. Reference counters and spectrometers are proposed and characterized with respect to efficiency, count-rate capabilities, energy resolution and tolerable neutron and {gamma}-radiation background levels. The instruments can be used in a neutron camera and are capable to operate in collimated neutron fluxes up to levels corresponding to full nuclear output power in the next generation of experiments. Energy resolutions of the spectrometers enables determination of ion temperatures from 3 (keV) through analysis of the Doppler broadening. Primarily, the instruments are aimed for studies of 14 (MeV) neutrons produced in (d,t)-plasmas but can, after minor modifications, be used for analysis of 2.45 (MeV) neutrons produced in (d,d)-plasma. (au) (33 refs.).}
place = {Sweden}
year = {1991}
month = {Feb}
}