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Neutral beam interlock system on TFTR using infrared pyrometry
Although the region of the TFTR vacuum vessel wall which is susceptible to damage by neutral beam strike is armored with a mosaic of TiC-olad POCO graphite tiles, at power deposition levels above 2.5 kW/cm 2 the armor surface temperature exceeds 1200° C within 250 ms and itself becomes susceptible to damage. In order to protect the wall armor, a neutral beam interlock system based on infrared pyroraetry measurement of the armor surface temperature was installed on TFTR. For each beamline, adoi:10.2172/5481272 fatcat:yaziimra7zbx5bviq477gljef4