Fusion product measurements in tokamaks

Conference · Wed May 01 04:00:00 EDT 1985 · Rev. Sci. Instrum.; (United States)

OSTI ID:5169554

Strachan, J D

Diagnostic methods and the applications of fusion product measurements in tokamaks are reviewed with emphasis on results from PLT, PDX, and TFTR. Measurements have been made using the 2.5-MeV neutron from the d(d, n)/sup 3/ He reaction, the 3-MeV proton from the d(d, p)t reaction, both the 3.7-MeV alpha and the 14.7-MeV proton from the d(/sup 3/He, p)..cap alpha.. reaction, and the 14-MeV neutron from the d(t, n)..cap alpha.. reaction. The common use of these measurements is the determination of the ion temperature from the magnitude of the d-d neutron emission. For tokamak plasmas, these results are usually in good agreement with the charge exchange ion temperature. Recently, the charged fusion products have been used for high-resolution spectroscopic purposes, and emission profile measurements. Pitch angle resolution of the escaping 3-MeV proton emission has been used to determine the poloidal magnetic field inside the tokamak. Major issues in this field include the expected tritium operation on TFTR where the neutron measurements will determine when tritium will be introduced into the TFTR vessel and provide a measurement of the fusion power multiplication value (Q). The TFTR Q approx. 1 experiments will also provide a chance to measure the confinement of 3.5-MeV alphas in a tokamak.

• Research Organization: Princeton Univ., NJ
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5169554
• Report Number(s): CONF-840922-
• Conference Information: Journal Name: Rev. Sci. Instrum.; (United States) Journal Volume: 56:5
• Country of Publication: United States
• Language: English

Related Subjects

440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ALPHA PARTICLES
CHARGED PARTICLE DETECTION
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CONFINEMENT
DETECTION
FUSION YIELD
ION TEMPERATURE
MAGNETIC FIELDS
NEUTRON DETECTION
NUCLEAR REACTION YIELD
PDX DEVICES
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLT DEVICES
PROTON DETECTION
RADIATION DETECTION
SPECTROSCOPY
TFTR TOKAMAK
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
YIELDS