AVS 64th International Symposium & Exhibition
    Vacuum Technology Division Tuesday Sessions
       Session VT-TuP

Paper VT-TuP8
Operational Regime of 2 million L/s Cryobox Pump on Tri Alpha Energy's C2W Machine

Tuesday, October 31, 2017, 6:30 pm, Room Central Hall

Session: Vacuum Technology Poster (and Student Poster Competition)
Presenter: Ernesto Barraza-Valdez, Tri Alpha Energy, Inc.
Authors: E. Barraza-Valdez, Tri Alpha Energy, Inc.
A. Van Drie, Tri Alpha Energy, Inc.
Correspondent: Click to Email

Tri Alpha Energy requires a large pumping speed of approximately 2 million L/s for hydrogen and 1.5 million L/s for deuterium in each of the four divertors (22,000 L) on C2W. To accomplish this TAE has developed a liquid nitrogen cooled, titanium getter pump. The experimental pump speed was tested for a variety of parameters including purity of titanium (99.995% and 99.97% Ti), various temperatures, and saturation. Purity of titanium showed no effect on the pump speed but there was a clear correlation with the temperature and saturation. With this, TAE had discovered a regime of operation during plasma shots in C2W.