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Development of Prototype MgB$_{2}$ Superconducting Solenoid Magnet for High-efficiency Klystron Applications
/ Watanabe, H (Hitachi, Hitachi) ; Koga, T (Hitachi, Hitachi) ; Tanaka, H (Hitachi, Hitachi) ; Wakuda, T (Hitachi, Hitachi) ; Yamamoto, Akira (KEK, Tsukuba ; CERN) ; Michizono, S (KEK, Tsukuba) ; Syratchev, Igor (CERN) ; Mcmonagle, Gerard (CERN) ; Catalan Lasheras, Nuria (CERN) ; Calatroni, Sergio (CERN)
A wind-and-react MgB 2 solenoid magnet for klystrons has been developed. While the current normal-conducting (Cu) magnet consumes 20 kW per magnet, this MgB$_2$ magnet consumes less than 3 kW in refrigerator power. [...]
CERN-ACC-2020-0022; CLIC-Note-1161.-
Geneva : CERN, 2020 - 7 p.
- Published in : IEEE Trans.Appl.Supercond. 30 (2020) 4601206
Fulltext: PDF;
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Applying Superconducting Magnet Technology for High-efficiency Klystrons in Particle Accelerator RF Systems
/ Yamamoto, Akira (KEK, Tsukuba) ; Michizono, Shinichiro (KEK, Tsukuba) ; Wuensch, Walter (CERN) ; Syratchev, Igor (CERN) ; Mcmonagle, Gerard (CERN) ; Catalan Lasheras, Nuria (CERN) ; Calatroni, Sergio (CERN) ; Stapnes, Steinar (CERN) ; Watanabe, Hiroyuki (Hitachi, Tokyo) ; Tanaka, Hideki (Hitachi, Tokyo) et al.
An M$_{g}$B$_{2}$ superconducting solenoid magnet has been developed for electron beam focusing in X-band (12 GHz) klystrons for particle accelerator RF systems, to provide a central field of 0.8 T at 57 A and at ≥ 20 K. It has successfully realized significant AC-plug power saving in one order of magnitude compared with that for a conventional Cu solenoid magnet. [...]
CERN-ACC-2020-0020; CLIC-Note-1159.-
Geneva : CERN, 2020 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4101304
Fulltext: PDF;
In : 26th International Conference on Magnet Technology (MT-26), Vancouver, Canada, 22 - 27 Sep 2019, pp.4101304
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Performance of MgB$_{2}$ Superconductor Developed for High-Efficiency Klystron Applications
/ Tanaka, Hideki (Hitachi, Hitachi) ; Suzuki, Takaaki (Hitachi, Hitachi) ; Kodama, Motomune (Hitachi, Hitachi) ; Koga, Tomoyuki (Hitachi, Hitachi) ; Watanabe, Hiroyuki (Hitachi, Hitachi) ; Yamamoto, Akira (KEK, Tsukuba ; CERN) ; Shinichiro, Michizono (KEK, Tsukuba)
An 8-km long MgB$_{2}$ wire for a prototype klystron magnet was made and evaluated. The wire was made by a typical in situ method; it has 10 filaments and 0.67 mm in outer diameter. [...]
CERN-ACC-2020-0021; CLIC-Note-1160.-
Geneva : CERN, 2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 6200105
Fulltext: PDF;
In : 26th International Conference on Magnet Technology (MT-26), Vancouver, Canada, 22 - 27 Sep 2019, pp.6200105
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First Operation of a Klystron Fitted with a Superconducting MgB₂ Solenoid
/ Catalán Lasheras, Nuria (CERN) ; Baig, Anisullah (Cockcroft Inst. Accel. Sci. Tech.) ; Boronat, Marça (CERN) ; Castilla, Alejandro (Cockcroft Inst. Accel. Sci. Tech.) ; Kimura, Takuji (CPI, Palo Alto) ; Kolda, Peter (CPI, Palo Alto) ; McMonagle, Gerard (CERN) ; Michizono, Shinichiro (KEK, Tsukuba) ; Syratchev, Igor (CERN) ; Yamamoto, Akira (KEK, Tsukuba)
As part of the effort to reduce the energy consumption of large research facilities using accelerators, high efficiency klystrons are being developed by CERN. However, a large fraction of the wall-plug power required to operate these klystrons is used in the focusing magnetic elements around the klystron in the form of normal conducting solenoids. [...]
2022 - 3 p.
- Published in : JACoW IPAC 2022 (2022) 3138-3140
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.3138-3140
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Design, fabrication and RF measurements of the storage and correction cavity prototypes of the RF pulse compression system for the klystron-based CLIC main linac
/ Wang, Ping ; Grudiev, Alexej (CERN) ; Riffaud, Benoit (CERN) ; Berthome, Emmanuel ; Motschmann, Fritz ; Syratchev, Igor (CERN) ; Scibor, Karol (CERN) ; Giordanino, Laurene ; Catalan Lasheras, Nuria (CERN) ; Morales Sanchez, Pedro (CERN)
An RF pulse compression system based on double-height waveguides was studied for the Klystron-based CLIC main linac. [...]
CERN-ACC-2024-0003 ; CLIC-Note-1198.
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2024 - 17.
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Design of the RF waveguide network for the klystron-based CLIC main linac RF Module
/ Wang, Ping (CERN) ; Capstick, Matthew John ; Catalan Lasheras, Nuria (CERN) ; Doebert, Steffen (CERN) ; Grudiev, Alexej (CERN) ; Rossi, Carlo (CERN) ; Morales Sanchez, Pedro (CERN) ; Syratchev, Igor (CERN) ; Wu, Xiaowei
The klystron-based Compact Linear Collider (CLIC) was initially proposed with a low center-of-mass energy of 380 GeV, primarily due to potential cost-effectiveness. [...]
CERN-ACC-2024-0001 ; CLIC-Note-1196.
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2024 - 24.
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Fiducialisation and initial alignment of CLIC component with micrometric accuracy
/ Mainaud Durand, Helene (CERN) ; Artoos, Kurt (CERN) ; Buzio, Marco (CERN) ; Caiazza, Domenico (CERN) ; Catalan Lasheras, Nuria (CERN) ; Cherif, Ahmed (CERN) ; Doytchinov, Iordan Petrov (CERN) ; Fuchs, Jean-Frederic (CERN) ; Gaddi, Andrea (CERN) ; Galindo Munoz, Natalia (CERN) et al.
We propose a new solution to fiducialise the three major components of the CLIC collider: quadrupoles, beam-position monitors (BPM), and accelerating structures (AS). [...]
CERN-ACC-NOTE-2016-0072.
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2016. - 8 p.
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High Power X-Band Generation Using Multiple Klystrons and Pulse Compression
/ Woolley, Benjamin (CERN) ; Argyropoulos, Theodoros (CERN) ; Catalán Lasheras, Nuria (CERN) ; Esperante Pereira, Daniel (Valencia U., IFIC) ; McMonagle, Gerard (CERN) ; Rey, Stephane (CERN) ; Syratchev, Igor (CERN) ; Tagg, Joseph (Natl. Instruments, Baden) ; Volpi, Matteo (Melbourne U.) ; Wuensch, Walter (CERN)
CERN has constructed and is operating a new X-band test stand containing two pairs of 12 GHz, 6 MW klystrons. By power combination through hybrid couplers and the use of pulse compressors, up to 45 MW of peak power can be sent to any of 4 test slots at pulse repetition rates up to 400 Hz. [...]
CERN-ACC-2017-260; CLIC-Note-1133.-
2017 - 3 p.
- Published in : 10.18429/JACoW-IPAC2017-THPIK095
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPIK095
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High-Power Testing Results of X-Band RF-Window and 45 Degrees Spiral Load
/ Boronat, Marça (CERN) ; Bursali, Hikmet (CERN) ; Catalán Lasheras, Nuria (CERN) ; Grudiev, Alexej (CERN) ; McMonagle, Gerard (CERN) ; Syratchev, Igor (CERN)
The X-Band test facilities at CERN have been running for some years now qualifying CLIC structure prototypes, but also developing and testing high power general-purpose X-Band components, used in a wide range of applications. Driven by operational needs, several components have been redesigned and tested aiming to optimize the reliability and the compactness of the full system and therefore enhancing the accessibility of this technology inside and outside CERN. [...]
2022 - 4 p.
- Published in : JACoW LINAC 2022 (2022) 279-282
Fulltext: PDF;
In : 31st Linear Accelerator Conference (LINAC22), Liverpool, UK, 28 Aug - 2 Sep 2022, pp.279-282
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