000320871 001__ 320871 000320871 005__ 20250804154740.0 000320871 0247_ $$2doi$$a10.1103/PhysRevSTAB.3.092001 000320871 0247_ $$2ISSN$$a1098-4402 000320871 0247_ $$2ISSN$$a2469-9888 000320871 0247_ $$2WOS$$aWOS:00 000320871 0247_ $$2inspire$$ainspire:524576 000320871 0247_ $$2datacite_doi$$a10.3204/PUBDB-2017-02147 000320871 0247_ $$2altmetric$$aaltmetric:73948368 000320871 0247_ $$2openalex$$aopenalex:W1606549729 000320871 037__ $$aPUBDB-2017-02147 000320871 041__ $$aEnglish 000320871 082__ $$a530 000320871 0881_ $$aphysics/0003011; DESY-00-031 000320871 088__ $$2arXiv$$aphysics/0003011 000320871 088__ $$2DESY$$aDESY-00-031 000320871 1001_ $$aAune, B.$$b0 000320871 245__ $$aThe superconducting TESLA cavities 000320871 260__ $$aCollege Park, MD$$bAmerican Physical Society$$c2000 000320871 264_1 $$2Crossref$$3online$$bAmerican Physical Society (APS)$$c2000-09-22 000320871 264_1 $$2Crossref$$3print$$bAmerican Physical Society (APS)$$c2000-09-01 000320871 3367_ $$2DRIVER$$aarticle 000320871 3367_ $$2DataCite$$aOutput Types/Journal article 000320871 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$mreport 000320871 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1496401904_32483 000320871 3367_ $$2BibTeX$$aARTICLE 000320871 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000320871 3367_ $$00$$2EndNote$$aJournal Article 000320871 500__ $$aM-Bereich 000320871 520__ $$aThe conceptional design of the proposed linear electron-positron collider TESLA is based on 9-cell 1.3 GHz superconducting niobium cavities with an accelerating gradient of Eacc >= 25 MV/m at a quality factor Q0 > 5E+9. The design goal for the cavities of the TESLA Test Facility (TTF) linac was set to the more moderate value of Eacc >= 15 MV/m. In a first series of 27 industrially produced TTF cavities the average gradient at Q0 = 5E+9 was measured to be 20.1 +- 6.2 MV/m, excluding a few cavities suffering from serious fabrication or material defects. In the second production of 24 TTF cavities additional quality control measures were introduced, in particular an eddy-current scan to eliminate niobium sheets with foreign material inclusions and stringent prescriptions for carrying out the electron-beam welds. The average gradient of these cavities at Q0 = 5E+9 amounts to 25.0 +- 3.2 MV/m with the exception of one cavity suffering from a weld defect. Hence only a moderate improvement in production and preparation techniques will be needed to meet the ambitious TESLA goal with an adequate safety margin. In this paper we present a detailed description of the design, fabrication and preparation of the TESLA Test Facility cavities and their associated components and report on cavity performance in test cryostats and with electron beam in the TTF linac. 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Palmieri Proceedings of the 8th Workshop on rf Superconductivity, Abano Terme, Italy, 1997$$tProceedings of the 8th Workshop on rf Superconductivity, Abano Terme, Italy, 1997 000320871 999C5 $$1P. Kneisel$$2Crossref$$oP. Kneisel Proceedings of the 9th Workshop on rf Superconductivity, Santa Fe, 1999$$tProceedings of the 9th Workshop on rf Superconductivity, Santa Fe, 1999 000320871 999C5 $$1I. Gonin$$2Crossref$$oI. Gonin Proceedings of the 9th Workshop on rf Superconductivity, Santa Fe, 1999$$tProceedings of the 9th Workshop on rf Superconductivity, Santa Fe, 1999 000320871 999C5 $$1P. Bosland$$2Crossref$$9-- missing cx lookup --$$a10.1109/77.783441$$p896 -$$tIEEE Trans. Appl. Supercond$$v9$$y1999 000320871 999C5 $$1J. Sekutowicz$$2Crossref$$9-- missing cx lookup --$$a10.1103/PhysRevSTAB.2.062001$$p062001 -$$tPhys. Rev. ST Accel. Beams$$v2$$y1999 000320871 999C5 $$1H. Chen$$2Crossref$$oH. 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