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Study of the Effective Torus Exhaust High Vacuum Pumping System Performance in the Inner Tritium Plant Loop of EU-DEMO

Teichmann, Tim 1; Luo, Xueli 1; Giegerich, Thomas 1; Day, Christian ORCID iD icon 1
1 Institut für Technische Physik (ITEP), Karlsruher Institut für Technologie (KIT)

Abstract:

The requirement for a reduction of the tritium inventory of the European demonstration fusion reactor (EU-DEMO) has led to the active research and development of a continuously working pumping process termed “KALPUREX.” This process foresees the direct recycling of a large fraction of the unburnt hydrogen isotopologues via superpermeation in metal foil pumps during the burn phase. The remaining exhaust gas mixture is pumped by continuously operating, mercury-driven linear diffusion pumps. Diffusion pumps are kinetic high vacuum pumps whose pumping principle is based on the momentum transfer from a supersonic mercury vapor jet to the pumped gas mixture. Like many high vacuum pumps, they feature species-dependent pumping speeds. In the present work, we develop a simplified hybrid model of the high vacuum pumping train in order to estimate the effective pumping speed of the integrated system. The results of this model and its implications on the further development of the vacuum system are discussed for the burn and dwell phases of EU-DEMO.


Verlagsausgabe §
DOI: 10.5445/IR/1000163729
Veröffentlicht am 02.11.2023
Originalveröffentlichung
DOI: 10.1080/15361055.2023.2229679
Scopus
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 1536-1055, 1943-7641
KITopen-ID: 1000163729
HGF-Programm 31.13.01 (POF IV, LK 01) Ex-Vessel Plant Systems & Engineering
Erschienen in Fusion Science and Technology
Verlag Taylor and Francis
Band 80
Heft 3-4
Seiten 399-410
Projektinformation EUROfusion (EU, EU 9. RP, 101052200)
Vorab online veröffentlicht am 23.08.2023
Schlagwörter Fusion reactor, torus exhaust pumping, high vacuum
Nachgewiesen in Dimensions
Web of Science
Scopus
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