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Title: Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1352966
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 20; Journal Issue: 4; Related Information: CHORUS Timestamp: 2017-04-24 22:13:03; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Maiano, C. G., Branlard, J., Hüning, M., Jensch, K., Kostin, D., Matheisen, A., Möller, W. -D., Sulimov, A., Vogel, E., Bosotti, A., Chen, J. F., Moretti, M., Paparella, R., Pierini, P., and Sertore, D. Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser. United States: N. p., 2017. Web. doi:10.1103/PhysRevAccelBeams.20.042005.
Maiano, C. G., Branlard, J., Hüning, M., Jensch, K., Kostin, D., Matheisen, A., Möller, W. -D., Sulimov, A., Vogel, E., Bosotti, A., Chen, J. F., Moretti, M., Paparella, R., Pierini, P., & Sertore, D. Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser. United States. doi:10.1103/PhysRevAccelBeams.20.042005.
Maiano, C. G., Branlard, J., Hüning, M., Jensch, K., Kostin, D., Matheisen, A., Möller, W. -D., Sulimov, A., Vogel, E., Bosotti, A., Chen, J. F., Moretti, M., Paparella, R., Pierini, P., and Sertore, D. Mon . "Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser". United States. doi:10.1103/PhysRevAccelBeams.20.042005.
@article{osti_1352966,
title = {Validation of the superconducting 3.9 GHz cavity package for the European X-ray Free Electron Laser},
author = {Maiano, C. G. and Branlard, J. and Hüning, M. and Jensch, K. and Kostin, D. and Matheisen, A. and Möller, W. -D. and Sulimov, A. and Vogel, E. and Bosotti, A. and Chen, J. F. and Moretti, M. and Paparella, R. and Pierini, P. and Sertore, D.},
abstractNote = {},
doi = {10.1103/PhysRevAccelBeams.20.042005},
journal = {Physical Review Accelerators and Beams},
number = 4,
volume = 20,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2017},
month = {Mon Apr 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevAccelBeams.20.042005

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • The European x-ray free electron laser is under construction at Deutsches Elektronen-Synchrotron (DESY). The electron beam energy of up to 17.5 GeV will be achieved by using superconducting accelerator technology. Final prototyping, industrialization, and new infrastructure are the actual challenges with respect to the accelerating cavities. This paper describes the preparation strategy optimized for the cavity preparation procedure in industry. For the industrial fabrication and preparation, several new hardware components have been already developed at DESY. The design and construction of a semiautomated rf-measurement machine for dumbbells and end groups are described. In a collaboration among FNAL, KEK, and DESY,more » an automatic cavity tuning machine has been designed and four machines are under construction. The functionality of these machines with special attention to safety aspects is described in this paper. A new high pressure rinsing system has been developed and is operational.« less
  • The European XFEL (X-ray Free Electron Laser) is a large facility under construction in Hamburg, Germany. It will provide a transversally fully coherent x-ray radiation with outstanding characteristics: high repetition rate (up to 2700 pulses with a 0.6 ms long pulse train at 10 Hz), short wavelength (down to 0.05 nm), short pulse (in the femtoseconds scale), and high average brilliance (1.6 ⋅ 10{sup 25} (photons s{sup −1} mm{sup −2} mrad{sup −2})/0.1% bandwidth). The beam has very high pulse energy; therefore, it has to be spread out on a relatively long mirror (about 1 m). Due to the very shortmore » wavelength, the mirrors need to have a high quality surface on their entire length, and this is considered very challenging even with the most advanced polishing methods. In order to measure the mirrors and to characterize their interaction with the mechanical mount, we equipped a metrology laboratory with a large aperture Fizeau interferometer. The system is a classical 100 mm diameter commercial Fizeau, with an additional expander providing a 300 mm diameter beam. Despite the commercial nature of the system, special care has been taken in the polishing of the reference flats and in the expander quality. We report the first commissioning of the instrument, its calibration, and performance characterization, together with some preliminary results with the measurement of a 950 mm silicon substrate. The intended application is to characterize the final XFEL mirrors with nanometer accuracy.« less
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