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U.S. Department of Energy
Office of Scientific and Technical Information

Advantages of using gyrotron scattering for alpha particle diagnostics

Conference ·
OSTI ID:5643792
Millimeter-wave gyrotron collective Thomson scattering can be an effective diagnostic technique for the study of alpha particle behavior in ignited plasmas. The measurement of alpha particle density, velocity distribution, and alpha particle induced plasma instabilities can be accomplished with both spatial and temporal resolution. Advantages include long pulse operation which can make possible very high signal to noise ratios and use of millimeter waves which maximizes the Doppler shifted scattered signal in WHz/sup -1/ and makes possible scattering angles up to 180/sup 0/. Extraordinary mode scattering at approximately 60 and 200 GHz would be used in TFTR and CIT respectively, and 140 GHz ordinary mode scattering in JET. 8 refs., 1 fig.
Research Organization:
Massachusetts Inst. of Tech., Cambridge (USA). Plasma Fusion Center
DOE Contract Number:
AC02-78ET51013
OSTI ID:
5643792
Report Number(s):
DOE/ET/51013-229-07/87; PFC/CP-87-12; CONF-8710140-2; ON: DE88002590
Country of Publication:
United States
Language:
English