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User name Fissum
Log entry time 18:08:02 on October 9,1998
Entry number 2543
keyword=Hall A target cell failure
At approximately 15:30, the target operator noticed the low temperature on the 3He target oven was 35deg C instead of 165deg C. Then, the RTD display showed RTD6 at 987deg C instead of 194deg C. At the time, the target was in "empty" position. The last polarization measurement was performed at 11:30 showing 29%. Beam current calibration measurements were immediately suspended, and the target was moved into the pickup coils to check the polarization. It was found to be 0. A controlled access was initiated, and the target was determined to have catastrophically failed. RADCON was then contacted to come and check the scattering chamber before any recovery work commenced.