Jensen D J, Brey W W, Delayre J L, Narayana P A
Department of Radiology, University of Texas Medical School, Houston 77030.
Med Phys. 1987 Sep-Oct;14(5):859-62. doi: 10.1118/1.596012.
The implementation of electronic compensation for eddy currents to reduce the gradient settling times on a superconducting magnet is described. Field plots inside the magnet indicate the importance of assessing the field changes at several positions in the magnet. The effect of an asymmetry between the gradient coil system and the cryostat is demonstrated. A modified compensation circuit is described to overcome this mechanical asymmetry.
描述了用于减少超导磁体上梯度稳定时间的涡流电子补偿的实现。磁体内部的场图表明了评估磁体中多个位置处场变化的重要性。展示了梯度线圈系统与低温恒温器之间不对称性的影响。描述了一种改进的补偿电路以克服这种机械不对称性。
