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In the detector stacks of each HRS a number of photomultiplier tubes
are present as part of the particle detection system.
The phototube bases require approximately 2500 volts at 2.4 mA.
This
voltage will be provided by a LeCroy high voltage supply, which can provide
up to 3000 volts at up to 3 mA per channel (ie, a maximum of 9 Watts per
channel). This voltage represents a potential hazard to personnel as well as a
potential source of ignition.
10/13/1997