Fig. 6.2 Basic drive coil configuration for Mass Driver Two Performance calculations were made with four different bucket designs. They had 's of 0.514 (the original ohmic bucket), 0.60, 0.65, and 0.70. The total ohmic bucket mass used was 400 gms (the original one had a mass of 530 gms) and was a value that was thought could be achieved, but never was. Current in an individual bucket coil was chosen to be 20,000 amp turns (20,000 to 25,000 amp turns was being achieved in the original bucket). The injection velocity into the accelerator was chosen to be 10 m/sec (10-15 m/sec was the range used in testing). And the sector capacitor voltage was varied from 600 volts to 800 volts (750 volts was considered nominal in the design). The results of these performance calculations are presented in Fig. 6.3. These results lead to the construction of higher ohmic buckets of reduced mass. An ohmic bucket with an = 0.73 was constructed and
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