Pumping speed and selectivity phenomena for cryopumping of ITER relevant exhaust gas mixtures

摘要

As part of the R&D work for the ITER cryopump system, an investigation has been performed to assess the relevant effects, which may lead to composition changes of the processed gas mixtures. The temperature needed for partial regeneration of the cryopanels (desorption from activated charcoal) is derived. The influence of panel incline on pumping performance is discussed, based on Monte Carlo simulation.