Muon spin rotation studies of niobium for superconducting rf applications

Autor: A. Grassellino, C. Beard, P. Kolb, R. Laxdal, N. S. Lockyer, D. Longuevergne, J. E. Sonier

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 6, p 062002 (2013)

In this work we investigate superconducting properties of niobium samples via application of the muon spin rotation/relaxation (μSR) technique. We employ for the first time the μSR technique to study samples that are cut out from large and small gr

Externí odkaz: https://doaj.org/article/c20372e75fad47f1b4cc3a6c4c54a7a1

Impact of geometry on the magnetic flux trapping of superconducting accelerating cavities

Autor: Akira Miyazaki, D. Longuevergne

Publikováno v: Phys.Rev.Accel.Beams
Phys.Rev.Accel.Beams, 2021, 24 (8), pp.083101. ⟨10.1103/PhysRevAccelBeams.24.083101⟩
Physical Review Accelerators and Beams, Vol 24, Iss 8, p 083101 (2021)

International audience; Controlling trapped magnetic flux in superconducting radio frequency (rf) cavities is of crucial importance in modern accelerator projects. In order to study flux trapping efficiency and sensitivity of surface resistance, dedi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e703fc9ffc3cc94103189893215628e
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451736

Commissioning of Vacuum Furnace and First Successful Heat Treatment of SRF Bulk Nb Cavities at IPN Orsay

Autor: Luc Maurice, Fetra Rabehasy, Catherine Madec, Thierry Pepin-Donat, D. Longuevergne, Frederic Chatelet, R. Martret, L. Renard, Sébastien Bousson, Mohammed Fouaidy, Fabien Éozénou, Francois Galet, Sebastien Blivet, G. Olry

Publikováno v: IEEE Trans.Appl.Supercond.
IEEE Trans.Appl.Supercond., 2018, 28 (4), pp.1-6. ⟨10.1109/TASC.2018.2820723⟩
IEEE Transactions on Applied Superconductivity
IEEE Transactions on Applied Superconductivity, Institute of Electrical and Electronics Engineers, 2018, 28 (4), pp.1-6. ⟨10.1109/TASC.2018.2820723⟩
IEEE Transactions on Applied Superconductivity, 2018, 28 (4), pp.1-6. ⟨10.1109/TASC.2018.2820723⟩

International audience; A new vacuum furnace dedicated to high temperature heat treatment under vacuum (VH2T2) of superconducting radio frequency (SRF) bulk Nb cavities was developed, and operated. This furnace will be used for interstitial hydrogen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ffac7bf320b22f61bff1805336952cb
https://doi.org/10.1109/tasc.2018.2820723

Final results of power conditioning of SPIRAL 2 couplers

Autor: P.E. Bernaudin, C. Marchand, R. Ferdinand, R. Martret, F. Vezzu, Olivier Piquet, D. Longuevergne, Pierre Bosland, Frederic Chatelet, T. Cabanel, J.Lesrel, P. De Lamberterie, J. Giraud, M. Baylac, L. Maurice, L. Renard, Y. Gómez Martínez, G. Olry, C. Joly, P. Boge

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2017, 870, pp.37-42. ⟨10.1016/j.nima.2017.07.004⟩
Nucl.Instrum.Meth.A
Nucl.Instrum.Meth.A, 2017, 870, pp.37-42. ⟨10.1016/j.nima.2017.07.004⟩
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017, 870, pp.37-42. ⟨10.1016/j.nima.2017.07.004⟩

International audience; Cryomodules of the superconducting accelerator SPIRAL 2 have been successfully qualified and are now under commissioning on the linac at GANIL (France). This paper presents the successful results of the power conditioning of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::448043285d76e2a288668c3555a89855
https://hal.archives-ouvertes.fr/hal-01582814

Open Microwave Cavity for use in a Purcell Enhancement Cooling Scheme

Autor: N. Evetts, Walter Hardy, Dan Bizzotto, D. Longuevergne, Isaac Martens

Publikováno v: Review of Scientific Instruments
Review of Scientific Instruments, American Institute of Physics, 2016, 87, pp.104702. ⟨10.1063/1.4963856⟩

International audience; A microwave cavity is described which can be used to cool lepton plasmas for potential use in synthesis of antihydrogen. The cooling scheme is an incarnation of the Purcell Effect: when plasmas are coupled to a microwave cavit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd6f0dd0ead180f243a19a1de73ced33
http://arxiv.org/abs/1609.02962