Calibration and Evaluation of Sintered Non-Evaporable Getter Pump Made in Italy with Lab-Built Test Platform

We reported the quantitative calibration and evaluation of the sintered non-evaporable getter pump HV800, to be installed in the divertor of Experimental Advanced Superconducting Tokomak (EAST), with the labbuilt test platform, comprising a vacuum chamber at a base pressure of 5. 1×10^-7 Pa, pumping unit, water-cooling heat-sink, vacuum gauges, electronic control unit, mass spectrometer and gas sources. The results show that the getter pump meets the technical requirements of the divertor. To be specific, when it comes to pumping for deuterium at the operating pressure, the average pumping speed was 240 L/s. Installed in the divertor zone, the set of 208 getter pumps could continuously work for at least 20 h at a pumping speed of 5×10⁴ L/s. We suggest that the getter pumps be capable of effectively improving the particle exhaust capacity in the divertor.