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Simulations and First RF Measurements of Coaxial HOM Coupler Prototypes for PERLE SRF Cavities
/ Barbagallo, Carmelo (IJCLab, Orsay ; U. Paris-Saclay) ; Barriere, Simon (CERN) ; Clement, Sebastien (CERN) ; Duchesne, Patricia (IJCLab, Orsay) ; Gerard, Romain Louis (CERN) ; Gerigk, Frank (CERN) ; Henry, James (Jefferson Lab) ; Kaabi, Walid (IJCLab, Orsay) ; Maurin, Pierre (CERN) ; Olivier, Gilles (IJCLab, Orsay) et al.
Superconducting Radio-Frequency (SRF) linac cryomodules are foreseen for the high-current multi-turn energy recovery linac PERLE (Powerful Energy Recovery Linac for Experiments). Coaxial higher order mode (HOM) couplers are the primary design choice to absorb beam-induced power and avoid beam instabilities. [...]
2023 - 4 p.
- Published in : JACoW SRF 2023 (2023) WEPWB103
Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.WEPWB103
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First coaxial HOM coupler prototypes and RF measurements on a copper cavity for the PERLE project
/ Barbagallo, Carmelo (U. Paris-Saclay ; IJCLab, Orsay) ; Duchesne, Patricia (IJCLab, Orsay) ; Kaabi, Walid (IJCLab, Orsay) ; Olivier, Gilles (IJCLab, Orsay) ; Olry, Guillaume (IJCLab, Orsay) ; Roset, Samuel (IJCLab, Orsay) ; Zomer, Fabian (IJCLab, Orsay ; U. Paris-Saclay) ; Henry, James (Jefferson Lab) ; Overstreet, Sarah (Jefferson Lab) ; Park, Gunn-Tae (Jefferson Lab) et al.
The PERLE (Powerful Energy Recovery Linac for Experiments) project relies on superconducting RF (SRF) cavities to reach its goals. The installation of coaxial couplers on the cutoff tubes of SRF cavities is foreseen for damping cavity’s Higher Order Modes (HOMs). [...]
2023
- Published in : JACoW IPAC 2023 (2023) MOPA025
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA025
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3.
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Overview cavities II
/ Gerigk, Frank (speaker) (CERN)
RF cavities are not only used to accelerate particle beams but they also kick beams or manipulate particles in the longitudinal phase space. They are used in linear and circular machines, some must have adjustable frequencies and some even accommodate multiple harmonics. [...]
2023 - 3356.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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4.
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Overview cavities I
/ Gerigk, Frank (speaker) (CERN)
RF cavities are not only used to accelerate particle beams but they also kick beams or manipulate particles in the longitudinal phase space. They are used in linear and circular machines, some must have adjustable frequencies and some even accommodate multiple harmonics. [...]
2023 - 2955.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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Progress and R/D challenges for FCC-ee SRF
/ Venturini Delsolaro, W (CERN) ; Garlasche, M (CERN) ; Peauger, F (CERN) ; Rosaz, G (CERN) ; Karpov, I (CERN) ; Zhang, L (Beijing, Inst. High Energy Phys.) ; Valente Feliciano, A M (Jefferson Lab) ; Udongwo, S A (Rostock U.) ; Bianchi, A (CERN) ; Bellini, G (CERN) et al.
The FCC-ee machines present a huge challenge for the RF systems, which need to be adapted to very diverse beam conditions going from moderate energy and high current for the Z machine to high energy and low beam current for the ttbar. This inverse scaling results naturally from a fixed budget for the synchrotron radiation, which the SRF cavities need to compensate. [...]
2023 - 13 p.
- Published in : EPJ Tech. Instrum. 10 (2023) 6
Fulltext: PDF;
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7.
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Next-Generation Superconducting RF Technology based on Advanced Thin Film Technologies and Innovative Materials for Accelerator Enhanced Performance and Energy Reach
/ Valente-Feliciano, A.-.M. (Jefferson Lab) ; Antoine, C. (Jefferson Lab ; IRFU, Saclay, DACM) ; Anlage, S. (Maryland U.) ; Ciovati, G. (Jefferson Lab) ; Delayen, J. (Jefferson Lab ; Old Dominion U.) ; Gerigk, F. (CERN) ; Gurevich, A. (Old Dominion U.) ; Junginger, T. (TRIUMF ; Victoria U.) ; Keckert, S. (Helmholtz-Zentrum, Berlin) ; Keppe, G. (INFN, Legnaro) et al.
Superconducting RF is a key technology for future particle accelerators, now relying on advanced surfaces beyond bulk Nb for a leap in performance and efficiency. [...]
arXiv:2204.02536.
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29.
eConf - Fulltext
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Design of beam optics for RF-separated kaon and antiproton beams in the M2 beam line of the CERN North Area
/ Gerbershagen, A (CERN ; Groningen, KVI) ; Andrieux, V (Illinois U., Urbana (main)) ; Bernhard, J (CERN) ; Brugger, M (CERN) ; Denisov, O (ASI, Rome ; INFN, Italy) ; Friedrich, J (Munich, Tech. U.) ; Gatignon, L (Lancaster U.) ; Gerigk, F (CERN) ; Guskov, A (Dubna, JINR) ; Ketzer, B (Bonn U.) et al.
The present contribution reviews the principle of RF separation and explains its dependence on different parameters of beam optics and hardware. The first examination of potential showstoppers for the RF-separated beam implementation for Phase-2 of the AMBER experiment in the M2 beam line of the North Area is presented. [...]
2023 - 12 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1048 (2023) 168004
Fulltext: PDF;
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Degradation and Recovery of the LHC RF Cryomodule Performance Using the Helium Processing Technique
/ Turaj, Katarzyna (CERN) ; Brunner, Olivier (CERN) ; Butterworth, Andrew (CERN) ; Gerigk, Frank (CERN) ; Maesen, Pierre (CERN) ; Montesinos, Eric (CERN) ; Peauger, Franck (CERN) ; Therasse, Mathieu (CERN) ; Venturini Delsolaro, Walter (CERN)
The LHC RF cryomodule "Asia" suffered an accidental influx of about 0.5 l of tunnel air during the leak checks of the pumping manifolds. The resulting risk of particle contamination was difficult to assess, and could not be excluded with certainty. [...]
2022 - 5 p.
- Published in : JACoW SRF 2021 (2022) 746-750
Fulltext: PDF;
In : 20th International Conference on RF Superconductivity (SRF 2021), Online, US, 28 Jun - 2 Jul 2021, pp.746-750
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