Challenges and Design Solutions of the Liquid Hydrogen Circuit at the European Spallation Source

Summary, in English

The European Spallation Source (ESS), Lund, Sweden will be a 5MW long-pulse neutron spallation research facility and will enable new opportunities for researchers in the fields of life sciences, energy, environmental technology, cultural heritage and fundamental physics. Neutrons are produced by accelerating a high-energy proton beam into a rotating helium-cooled tungsten target. These neutrons pass through moderators to reduce their energy to an appropriate range (< 5 meV for cold neutrons); two of which will use liquid hydrogen at 17 K as the moderating and cooling medium. There are several technical challenges to overcome in the design of a robust system that will operate under such conditions, not least the 20 kW of deposited heat. These challenges and the associated design solutions will be detailed in this paper.

• Författare: Stephen Gallimore; Per Nilsson; Pascal Sabbagh; Alan Takibayev; John Weisend; Y. Bessler; M. Klaus
• Avdelning/ar: European Spallation Source ESS AB
• Publiceringsår: 2014
• Språk: Engelska
• Sidor: 659-664
• Publikation/Tidskrift/Serie: Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (AIP Conference Proceedings)
• Volym: 1573
• Länkar: http://dx.doi.org/10.1063/1.4860765
• Dokumenttyp: Konferensbidrag
• Förlag: American Institute of Physics (AIP)
• Ämne: Natural Sciences; Physical Sciences
• Nyckelord: ESS; Supercritcal Liquid Hydrogen; Moderators; Ortho/Para conversion; Spallation
• Conference name: Joint Conference of the Transactions of the Cryogenic Engineering Conference (CEC) / Transactions of the International Cryogenic Materials Conference
• Conference date: 2013-06-17 - 2013-06-21
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0094-243X; ISSN: 1551-7616