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BLIP operations 3-16-10

BLIP operations 3-16-10. Status – running at ~117MeV BLIP average beam current up to 98.3µA, with a peak of 105.8µA on Saturday, due to increase of linac pulse rate from 6.0 to 6.67Hz. Operation with beam 156.7hrs . Good luck ended last night as beam control problems shut BLIP down.

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BLIP operations 3-16-10

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  1. BLIP operations 3-16-10 Status – running at ~117MeV BLIP average beam current up to 98.3µA, with a peak of 105.8µA on Saturday, due to increase of linac pulse rate from 6.0 to 6.67Hz. Operation with beam 156.7hrs. Good luck ended last night as beam control problems shut BLIP down. Operations issues A research irradiation to produce Y-86 was performed at 65.5 MeV on March 11. The experiment was designed to test a new target at very low energy (~14.5 MeV on target), high dE/dx and full intensity. The target survived without leakage or melting, but we mostly produced Y-85. This implies that beam energy on target was too high. An incorrectly fabricated degrader seems to be the culprit. No target problems this week even at the high current. Long Baseline Neutrino Experiment (LBNE) to begin at BLIP March 18. Fermi Lab supplied materials (graphite, BN) will be irradiated in BLIP at 181 MeV for ~9weeks. After several weeks of decay the material properties (eg. coefficient of thermal expansion, thermal conductivity, tensile strength, etc.) will be tested in our hot cells.

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