000480617 001__ 480617 000480617 005__ 20250715180116.0 000480617 0247_ $$2doi$$a10.1088/1757-899X/1240/1/012123 000480617 0247_ $$2ISSN$$a1757-8981 000480617 0247_ $$2ISSN$$a1757-899X 000480617 0247_ $$2datacite_doi$$a10.3204/PUBDB-2022-03898 000480617 0247_ $$2openalex$$aopenalex:W4293245237 000480617 037__ $$aPUBDB-2022-03898 000480617 041__ $$aEnglish 000480617 082__ $$a530 000480617 1001_ $$0P:(DE-H253)PIP1093254$$aRamalingam, Rajinikumar$$b0$$eCorresponding author$$udesy 000480617 1112_ $$aCryogenic Engineering Conference (CEC) 2021, 19-23 July 2021, Virtual Conference, USA$$cVirtual Conference$$d2021-07-19 - 2021-07-23$$gCEC$$wUSA 000480617 245__ $$aHeat loads measurements at the XFEL cold linac 000480617 260__ $$aLondon [u.a.]$$bInstitute of Physics$$c2022 000480617 29510 $$aAdvances in Cryogenic Engineering: Proceedings of the Cryogenic Engineering Conference (CEC) 2021, 19-23 July 2021, Virtual Conference, USA 000480617 300__ $$a012123 000480617 3367_ $$2ORCID$$aCONFERENCE_PAPER 000480617 3367_ $$033$$2EndNote$$aConference Paper 000480617 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$mjournal 000480617 3367_ $$2BibTeX$$aINPROCEEDINGS 000480617 3367_ $$2DRIVER$$aconferenceObject 000480617 3367_ $$2DataCite$$aOutput Types/Conference Paper 000480617 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1717066153_643786 000480617 3367_ $$0PUB:(DE-HGF)7$$2PUB:(DE-HGF)$$aContribution to a book$$mcontb 000480617 520__ $$aAbstract. The European X-Ray Free Electron Laser (EuXFEL) at DESY is in operation sincethe beginning of 2017. The free electron laser is based on a superconducting linear acceleratorthat delivers electrons to the undulator section with beam energy up to 17.5 GeV. The linearaccelerator consists of 96 cryomodules; each 12 m long module is an assembly of8 superconducting cavities and one superconducting magnet. This paper focusses on themeasurement of the static and dynamic heat loads of the cryomodules assembled in the linac.Heat loads are an important parameter to evaluate the efficiency of the refrigerator system, thequality of the cryomodule assembly and installation and the accelerating cavity performances,being the dynamic heat loads proportional to the cavity quality factor (Q0, the ratio of the storedenergy to the dissipated energy). The paper describes at first the procedure to measure the staticheat load without beam energy and the dynamic heat loads at different beam energy levels. 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