@inbook{638be08ecbe24a2eb5c0917389482749,
title = "Fabrication, Cryogenic Test and Installation of the ESS Cryogenic Moderator System",
abstract = "The ESS cryogenic moderator system (CMS) has been designed to circulate subcooled liquid hydrogen with a temperature of 17 K and a parahydrogen concentration of more than 99.5% at 1.0 MPa in order to slow down the high energy neutrons by means of two hydrogen moderators. The CMS cold box (CBX) had been fabricated in November 2020 by the ESS in-kind partner, Forschungszentrum J{\"u}lich GmbH (FZJ). Subsequently, the CMS CBX cryogenic test had been implemented by using liquid nitrogen until September 2021 at FZJ. The CMS CBX was cooled by a mixture of GN2 and LN2, instead of a helium refrigerator. The performance test for two hydrogen pumps and a measured pressure drop met the design requirement. Furthermore, it was verified that a combination of a heater and a release control valve, which was called a pressure control system, could maintain the CMS pressure at a set point. The CMS installation with the exception of the moderators will be completed at the ESS site by June, 2022.",
keywords = "Hydrogen moderator, Liquid hydrogen, Spallation source",
author = "H. Tatsumoto and Y. Be{\ss}ler and E. Rosenthal and P. Arnold and M. Kickulies and M. Boros and A. Horvath and M. Segerup and P. Tereszkowski and D. Lyngh",
note = "Publisher Copyright: {\textcopyright} Zhejiang University Press. 2023.",
year = "2023",
doi = "10.1007/978-981-99-6128-3_16",
language = "English",
series = "Advanced Topics in Science and Technology in China",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "133--140",
booktitle = "Advanced Topics in Science and Technology in China",
}