Installation and operation of a computer-controlled measuring assembly for dynamic measurements of dipole excitation cycles at COSY

The field distribution during a dipole excitation cycle at COSY can be determined with an accuracy of 10-4 for the field value, and 10-5 for the current, with a time resolution down to 1 ms. The current values are measured with a zero-flow current transformer and a digital voltmeter. The field measurement is done with a stationary coil and a digital integrator without deadtime, with one absolute reference value being set by nuclear magnetic resonance measurement. The measuring process, the evaluation and the management of the data are controlled by a Unix computer and handled by a menu-guided, modular C program. (orig.)