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Title: TFTR alpha extraction and measurement: Development and testing of advanced alpha detectors: Final report

Advanced alpha-particle detectors made of heavy elements were investigated as alternatives to silicon surface-barrier detectors for the ''foil-neutralization technique'' of alpha-particle diagnostics in fusion reactors with high neutron backgrounds. From an extensive literature review, it was decided that HgI/sub 2/ would make a more suitable detector for alpha-particle diagnostics than other heavy element detectors such as CdTe. Thus, HgI/sub 2/ detectors were designed and fabricated. Experimental tests were performed to determine detector characteristics and detector responses to alpha particles. Radiation noise measurements were also performed using the North Carolina State University PULSTAR nuclear reactor for both the HgI/sub 2/ detectors and commercial Si(Au) surface barrier detectors. 15 refs., 1 fig.
Authors:
Publication Date:
OSTI Identifier:
6906452
Report Number(s):
DOE/ER/53195-T1
ON: DE88015779
DOE Contract Number:
FG05-85ER53195
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Research Org:
North Carolina State Univ., Raleigh (USA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 47 OTHER INSTRUMENTATION; SEMICONDUCTOR DETECTORS; FABRICATION; TFTR TOKAMAK; PLASMA DIAGNOSTICS; ALPHA PARTICLES; ALPHA SPECTROSCOPY; CHARGED PARTICLE DETECTION; CRYSTAL GROWTH; FIRST WALL; MERCURY IODIDES; OPERATION; PROGRESS REPORT; TESTING; CHARGED PARTICLES; DETECTION; DOCUMENT TYPES; HALIDES; HALOGEN COMPOUNDS; IODIDES; IODINE COMPOUNDS; MEASURING INSTRUMENTS; MERCURY COMPOUNDS; MERCURY HALIDES; RADIATION DETECTION; RADIATION DETECTORS; SPECTROSCOPY; THERMONUCLEAR REACTOR WALLS; THERMONUCLEAR REACTORS; TOKAMAK TYPE REACTORS 700102* -- Fusion Energy-- Plasma Research-- Diagnostics; 440300 -- Miscellaneous Instruments-- (-1989)