Analysis of quench properties of the Q3 magnets with and without open circuit heater elements
1995
The Q3 magnets have 2 independent heater elements that are energized by the quench protection system. One heater element in the Q3 magnet at A4 became an open circuit after the initial cooldown. Recently the second element became an open circuit. The Q3 magnet at A4 is powered in series with a Q3 magnet at B1. The heaters in the magnet at B1 are still intact. The purpose of this study is to determine if the magnet circuit can be operated without undue risk of damage to the magnets. The risk of damage to the magnet at A4 is less of a concern since repairing the heaters is expected to be a major effort in any event. There is one spare Q3 magnet.
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