Bi2212 Double Pancakes for Hts Critical Current Measurement

Recent progresses in Bi2212 wires have proved its suitability for high field magnet development. Using the volume of the VAMAS sample CEA Saclay has developed a small double pancake sample for Bi2212 ribbon testing. This sample allows testing up to 6 meters of superconducting ribbon using a react and wind technique, the reaction being done on a provisional reaction mandrel. The manufacturing technique of this sample is presented as well as the results of the critical current measurement. These results are compared with results measured on conventional VAMAS samples and with resistive transition laws previously published.