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1.
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Main Highlights of ARIES WP15 Collaboration
/ Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Antoine, Claire (IRFU, Saclay) ; Azzolini, Oscar (INFN, Legnaro) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Goudket, Philippe (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Keppel, Giorgio (INFN, Legnaro) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (U. Siegen (main)) ; Medvids, Arturs (Riga Tech. U.) et al.
An international collaboration of research teams from CEA (France), CERN (Switzerland), INFN/LNL (Italy), HZB and USI (Germany), IEE (Slovakia), RTU (Latvia) and STFC/DL (UK), are working together on better understanding of how to improve the properties of superconducting thin films (ScTF) for RF cavities. The collaboration has been formed as WP15 in the H2020 ARIES project funded by EC. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 571-575
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.571-575
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2.
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Thick Film Morphology and SC Characterizations of 6 GHz Nb/Cu Cavities
/ Garcia Diaz, Vanessa (INFN, Legnaro ; U. Ferrara (main)) ; Azzolini, Oscar (INFN, Legnaro) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Fonnesu, Dorothea (CERN) ; Keppel, Giorgio (INFN, Legnaro) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Pira, Cristian (INFN, Legnaro) ; Stivanello, Fabrizio (INFN, Legnaro) ; Tikhonov, Dmitry (Helmholtz-Zentrum, Berlin) ; Valizadeh, Reza (Daresbury) et al.
Thick films deposited in long pulse DCMS mode onto 6 GHz copper cavities have demonstrated the mitigation of the Q-slope at low accelerating fields. The Nb thick films (~40 microns) show the possibility to reproduce the bulk niobium superconducting properties and morpholo-gy characterizations exhibited dense and void-free films that are encouraging for the scaling of the process to 1.3 GHz cavities. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 18-22
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.18-22
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3.
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Synthesis of Nb and Alternative Superconducting Film to Nb for SRF Cavity as Single Layer
/ Valizadeh, Reza (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Antoine, Claire (IRFU, Saclay) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Goudket, Philippe (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Hannah, Adrian (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (U. Siegen (main)) ; Malyshev, Oleg (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Medvids, Arturs (Riga Tech. U.) ; Onufrijevs, Pavels (Riga Tech. U.) et al.
The production of superconducting coatings for radio frequency (RF) cavities has been developed over several decades. It is widely accepted that for any further improvement in cavity RF performance, innovation is needed and one may have to turn to other forms of Nb and other superconducting materials. [...]
2022 - 6 p.
- Published in : JACoW SRF 2021 (2022) 893-898
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.893-898
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4.
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Impact of the Cu Substrate Surface Preparation on the Morphological, Superconductive and RF Properties of the Nb Superconductive Coatings
/ Pira, Cristian (INFN, Legnaro) ; Antoine, Claire (IRFU, Saclay) ; Chyhyrynets, Eduard (INFN, Legnaro) ; Jiang, Xin (Siegen U.) ; Katasevs, Aleksejs (Riga Tech. U.) ; Kaupuzs, Jevgenijs (Riga Tech. U.) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin) ; Leith, Stewart (Siegen U.) ; Malyshev, Oleg (Daresbury) ; Medvids, Arturs (Riga Tech. U.) et al.
Nowadays, one of the main issues of the superconducting thin film resonant cavities is the Cu surface preparation. A better understanding of the impact of copper surface preparation on the morphological, superconductive (SC) and RF properties of the coating, is mandatory in order to improve the performances of superconducting cavities by coating techniques. [...]
2019 - 6 p.
- Published in : 10.18429/JACoW-SRF2019-THP041
Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.937-942
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5.
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Design and first measurements of an alternative calorimetry chamber for the HZB quadrupole resonator
/ Keckert, Sebastian (Helmholtz-Zentrum, Berlin) ; Kleindienst, Raphael (Helmholtz-Zentrum, Berlin) ; Knobloch, Jens (Helmholtz-Zentrum, Berlin) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin)
The systematic research on superconducting thin films requires dedicated testing equipment. The Quadrupole Resonator (QPR) is a specialized tool to characterize the superconducting RF properties of circular planar samples. [...]
CERN-ACC-2015-0115.-
Geneva : CERN, 2015
- Published in :
- Published in : (2015) , pp. TUPB067
Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB067
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6.
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Commissioning results of the HZB quadrupole resonator
/ Kleindienst, Raphael (Helmholtz-Zentrum, Berlin) ; Burrill, Andrew (Helmholtz-Zentrum, Berlin) ; Knobloch, Jens (Helmholtz-Zentrum, Berlin) ; Kugeler, Oliver (Helmholtz-Zentrum, Berlin)
Recent cavity results with niobium have demonstrated the necessity of a good understanding of both the BCS and residual resistance. For a complete picture and comparison with theory, it is essential that one can measure the RF properties as a function of field, temperature, frequency and ambient magnetic field. [...]
CERN-ACC-2015-0114.-
Geneva : CERN, 2015
- Published in : 10.18429/JACoW-SRF2015-WEA1A04
Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.WEA1A04
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7.
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Characterization of a Piezo-based Microphonics Compensation System at HoBiCaT
/ Neumann, Axel (BESSY GmbH, Berlin) ; Anders, Wolfgang (BESSY GmbH, Berlin) ; Klauke, Sascha (BESSY GmbH, Berlin) ; Knobloch, Jens (BESSY GmbH, Berlin) ; Kugeler, Oliver (BESSY GmbH, Berlin) ; Schuster, Michael (BESSY GmbH, Berlin)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.408
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8.
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Microphonics Measurements in a CW-driven TESLA-type Cavity
/ Kugeler, Oliver (BESSY GmbH, Berlin) ; Anders, Wolfgang (BESSY GmbH, Berlin) ; Knobloch, Jens (BESSY GmbH, Berlin) ; Neumann, Axel (BESSY GmbH, Berlin)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.405
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9.
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First RF Tests in the HoBiCaT Superconducting Test Facility at BESSY
/ Kugeler, Oliver (BESSY GmbH, Berlin) ; Anders, Wolfgang (BESSY GmbH, Berlin) ; Borninkhof, Jorg (BESSY GmbH, Berlin) ; Pflückhahn, Dirk (BESSY GmbH, Berlin) ; Hoberg, Hans Georg (BESSY GmbH, Berlin) ; Klauke, Sascha (BESSY GmbH, Berlin) ; Knobloch, Jens (BESSY GmbH, Berlin) ; Martin, Manfred (BESSY GmbH, Berlin) ; Mielczarek, Grzegorz (BESSY GmbH, Berlin) ; Neumann, Axel (BESSY GmbH, Berlin) et al.
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.402
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