|
1.
|
High-Power Test of Two Prototype X-Band Accelerating Structures Based on SwissFEL Fabrication Technology
/ Millar, William L (CERN) ; Grudiev, Alexej (CERN) ; Wuensch, Walter (CERN) ; Lasheras, Nuria Catalan (CERN) ; McMonagle, Gerard (CERN) ; Zennaro, Riccardo (PSI, Villigen) ; Craievich, Paolo (PSI, Villigen) ; Bopp, Markus (PSI, Villigen) ; Lucas, Thomas G (PSI, Villigen) ; Volpi, Matteo (CERN ; Melbourne U.) et al.
This article presents the design, construction, and high-power test of two X -band radio frequency (RF) accelerating structures built as part of a collaboration between CERN and the Paul Scherrer Institute (PSI) for the compact linear collider (CLIC) study. The structures are a modified “tuning-free” variant of an existing CERN design and were assembled using Swiss free electron laser (SwissFEL) production methods. [...]
2023 - 19 p.
- Published in : IEEE Trans. Nucl. Sci. 70 (2023) 1-19
Fulltext: PDF;
|
|
|
2.
|
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
|
|
|
3.
|
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
|
|
|
4.
|
The PolariX-TDS Project: Bead-Pull Measurements and High-Power Test on the Prototype
/ Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; Citterio, Alessandro (PSI, Villigen) ; D'Arcy, Richard (DESY) ; Dorda, Ulrich (DESY) ; Foese, Manon (DESY) et al.
A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X- band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. The prototype of the novel X-band TDS, the Polarizable X-band (PolariX) TDS, was fabricated at PSI following the high-precision tuning-free production process developed for the C-band Linac of the SwissFEL project. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-FEL2019-WEP036
Fulltext: PDF;
In : 39th International Free Electron Laser Conference, Hamburg, Germany, 26 - 30 Aug 2019, pp.WEP036
|
|
|
5.
|
The Southern Hemisphere’s First X-Band Radio-Frequency Test Facility at the University of Melbourne
/ Volpi, Matteo (Melbourne U.) ; Boland, Mark J (Saskatchewan U., CLS) ; Catalán Lasheras, Nuria (CERN) ; Dowd, Rohan (ASP, Melbourne) ; González Antón, Sergio (CERN) ; McMonagle, Gerard (CERN) ; Rassool, Roger P (Melbourne U.) ; Sheehy, Suzanne L (Melbourne U.) ; Stapnes, Steinar (CERN) ; Taylor, Geoffrey N (Melbourne U.) et al.
The first Southern Hemisphere X-band Laboratory for Accelerators and Beams (X-LAB) is under construction at the University of Melbourne, and it will operate CERN X-band test stand containing two 12GHz 6MW klystron amplifiers. By power combination through hybrid couplers and the use of pulse compressors, up to 50 MW of peak power can be sent to any of 2 test slots at pulse repetition rates up to 400 Hz. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC '21 (2021) 3588-3591
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3588-3591
|
|
|
6.
|
Commissioning of a New X-Band, Low-Noise LLRF System
/ Edwards, Amelia V (CERN ; Lancaster U.) ; Arévalo, Marçà Boronat (CERN) ; Catalán-Lasheras, Núria (CERN) ; Dexter, Amos (Lancaster U.) ; McMonagle, Gerard (CERN)
To increase beam energy in the CLEAR facility at CERN and study the CLIC accelerating structure prototype in operating conditions, the first X-band test facility at CERN was upgraded in 2020. Both, the acquisition and software systems at X-band test stand 1 (Xbox1) were upgraded to exhibit low phase noise which is relevant to klystron based CLIC and to the use of crab cavities in the beam delivery system. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2683-2686
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2683-2686
|
|
|
7.
|
High-Gradient Breakdown Studies of an X-Band Accelerating Structure Operated in the Reversed Taper Direction
/ Wu, Xiaowei (CERN) ; Boronat Arévalo, Marçà Josep (CERN) ; Castilla, Alejandro (CERN) ; Catalán Lasheras, Núria (CERN) ; Edwards, Amelia V (CERN) ; Grudiev, Alexej (CERN) ; McMonagle, Gerard (CERN) ; Millar, William L (CERN) ; Syratchev, Igor (CERN) ; Wuensch, Walter (CERN)
The results of high-gradient tests of a tapered X-band traveling-wave accelerator structure powered in reversed direction are presented. Powering the tapered structure from the small aperture, normally output, at the end of the structure provides unique conditions for the study of gradient limits. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1543-1546
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1543-1546
|
|
|
8.
|
Consolidation and Future Upgrades to the CLEAR User Facility at CERN
/ Dyks, Luke A (JAI, UK ; CERN) ; Burrows, Philip N (JAI, UK) ; Corsini, Roberto (CERN) ; Curt, Stephane (CERN) ; Farabolini, Wilfrid (CERN) ; Gamba, Davide (CERN) ; Garolfi, Luca (CERN) ; Gilardi, Antonio (Naples U. ; CERN) ; Granados, Eduardo (CERN) ; Korysko, Pierre (JAI, UK ; CERN) et al.
The CERN Linear Electron Accelerator for Research (CLEAR) at CERN has been operating since 2017 as a dedicated user facility providing beams for a varied range of experiments. CLEAR consists of a 20 m long linear accelerator (linac), able to produce beams from a Cs₂Te photocathode and accelerate them to energies of between 60 MeV and 220 MeV. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC2021 (2021) 2700-2703
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2700-2703
|
|
|
9.
|
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;
|
|
|
10.
|
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
|
|
email alert
or subscribe to the 
RSS feed.