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2024-03-14
17:53
Growth of Nb films on Cu for superconducting radio frequency cavities by direct current and high power impulse magnetron sputtering: A molecular dynamics and experimental study / Ghaemi, M (Helsinki Inst. of Phys.) ; Lopez-Cazalilla, A (Helsinki Inst. of Phys.) ; Sarakinos, K (Helsinki U. ; Royal Inst. Tech., Stockholm) ; Rosaz, G J (CERN) ; Carlos, C P A (CERN) ; Leith, S (CERN) ; Calatroni, S (CERN) ; Himmerlich, M (CERN) ; Djurabekova, F (Helsinki Inst. of Phys.)
The use of superconducting radio frequency (rf) cavities in particle accelerators necessitates that copper (Cu) surfaces are coated by thin niobium (Nb) films, predominantly synthesized by magnetron sputtering. A key feature of the rf cavities is that they exhibit a complex three-dimensional geometry, such that during Nb film growth vapor is not deposited on a flat substrate [...]
2024 - 11 p. - Published in : Surf. Coat. Technol. 476 (2024) 130199 Fulltext: PDF;

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2024-03-14
17:53
Experience on Series Production of the HL-LHC Superferric High Order Corrector Magnets / Statera, M (Milan U.) ; Prioli, M (Milan U.) ; Broggi, F (Milan U.) ; De Matteis, E (Milan U.) ; Imeri, L (Milan U.) ; Leone, A (Milan U.) ; Mariotto, S (Milan U. ; INFN, Milan) ; Paccalini, A (Milan U.) ; Pasini, A (Milan U.) ; Pedrini, D (Milan U.) et al.
INFN has developed at the LASA lab (Milano, Italy) the High Order (HO) corrector magnets for the High Luminosity-LHC (HL-LHC) project, which will equip the new interaction regions. All the HO correctors, from skew quadrupole to dodecapole, are based on a novel superferric design, never used so far in high energy colliders, which allows a relatively simple, modular, and easy way to construct a magnet. [...]
2023 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-7

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2024-03-05
10:19
FCC circumference studies based on RF synchronization / Zhang, L H (Hefei, CUST) ; Damerau, H (CERN) ; Karpov, I (CERN) ; Vanel, A L (CERN)
As the study of the Future Circular Collider (FCC) projectprogresses, the choice of the exact circumference of the acceleratortunnel becomes essential. It is defined by RF-related constraints,mainly the RF frequency of the FCC-hh, as well as the revolutionfrequency ratios with the hadron injector. [...]
2024 - 10 p. - Published in : JINST 19 (2024) T02007 Fulltext: PDF;

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2024-03-05
10:19
Training-free performance of the wax-impregnated SuShi septum magnet / Barna, D (Wigner RCP, Budapest) ; Brunner, K (Wigner RCP, Budapest) ; Novák, M (Wigner RCP, Budapest) ; Borburgh, J (CERN) ; Atanasov, M (CERN) ; Lackner, F (CERN) ; Olvegård, M (Uppsala U.) ; Pepitone, K (Uppsala U.) ; Santiago Kern, R (Uppsala U.) ; Svanberg, C (Uppsala U.) et al.
In the framework of the Future Circular Collider Study a new septum magnet concept, nicknamed ‘SuShi’ has been developed, and a prototype was built at Wigner Research Center for Physics, and tested at the FREIA facility of Uppsala University in April 2023. The concept uses a canted cosine theta (CCT)-like superconducting magnet and a passive superconducting shield to create a zero-field and high-field region within its aperture. [...]
2024 - 12 p. - Published in : Supercond. Sci. Technol. 37 (2024) 045006 Fulltext: PDF;

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2024-03-05
10:19
First considerations on the supporting structures of FCC-ee booster and collider in the arc regions / Carra, F (CERN) ; Baudin, L (CERN) ; Bauche, J (CERN) ; Artoos, K (CERN) ; Atieh, S (CERN) ; Bertarelli, A (CERN) ; Brunner, O (CERN) ; Capatina, O (CERN) ; Chance, A (Saclay) ; Chemli, S (CERN) et al.
In 2022, the FCC Feasibility Study management mandated aworking group to analyse the best configuration of the FCC-ee tunnelin the arc regions, in view of the construction of a mock-up of thearc half-cell. One of the main and most challenging goals of thestudy, named FCC-ee Arc Half-Cell Mock-up Project, was toperform a preliminary investigation on the principles of supportingthe Short-Straight Sections and dipoles of the half-cells, both forthe booster and for the collider machines. [...]
2024 - 7 p. - Published in : JINST 19 (2024) T02008 Fulltext: PDF;

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2024-03-04
12:07
Development of a Readout Board for an Optical Beam Loss Monitor based on Cherenkov Radiation at CERN / Lima, Erika
This thesis presents the theory, design, fabrication, and characterization of a sensor electronics board for a novel beam loss monitor based on optical fibres developed at Centre Européenne pour la Recherche Nucléaire (CERN) by the Beam Instrumentation group [...]
CERN-THESIS-2021-377 - Roma : Sapienza Università di Roma, Ingegneria dell’Informazione, Informatica e Statistica, 2021-10-22.


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2024-02-23
23:02
208Pb29+ beam physics studies at the CERN Linac3 in the 2021 run / Montoya Soto, Gaspar Ricardo
This thesis represents the culmination of a comprehensive exploration into the intricate world of Linac3, a journey undertaken during the 2021 Pb run [...]
CERN-THESIS-2023-344 - 112 p.


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2024-02-23
11:18
Slow extraction with octupoles at CERN proton synchrotron to improve extraction efficiency / Taylor, Rebecca ; Fraser, Matthew (CERN) ; Arrutia, Pablo (CERN) ; Johnson, Eliott (CERN) ; Benedetto, Elena (SEEIIST Association (CH))
The extraction inefficiency of the slow extraction process induces radioactivity in the area surrounding the electrostatic septum. [...]
CERN-ACC-NOTE-2023-0027 ; NIMMS-Note-020.
- 2023. - 4 p.
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2024-02-21
06:01
The Proton Beam for the Neutrino Velocity Measurement with OPERA / Evans, Lyndon (Imperial Coll., London ; CERN)
2011 - 6 p. - Published in : Pontif. Acad. Sci. Scr. Varia: 119 (2011) , pp. 337-342 Fulltext: PDF; External link: Fulltext
In : Subnuclear Physics: Past, Present and Future, Vatican City, Vatican City State, 30 Oct - 2 Nov 2011, pp.337-342

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2024-02-19
13:41
Optical readout of MicroPattern Gaseous Detectors with SiPMs / Woods, Jesse
In order to probe the universe for new and exciting physics, increasingly higher and higher energy scales must be accessed to test our theories, potentially uncovering new particles and interactions. [...]
CERN-STUDENTS-Note-2024-004.
- 2022.
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