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All CERN Accelerators documents

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2025-02-01
06:02
Mitigation of Helium Leakage Risks Within the Cryostat of ITER Including Diagnosing the Occurrence of Stress Corrosion Cracking Within the Thermal Shield Cryogenic Helium Pipes / Pearce, Robert (Euratom, St. Paul Lez Durance) ; Bersier, J L (Euratom, St. Paul Lez Durance) ; Iannetti, A (Euratom, St. Paul Lez Durance) ; Jarrige, C (Euratom, St. Paul Lez Durance) ; Kang, D (Euratom, St. Paul Lez Durance) ; Laugier, D (Euratom, St. Paul Lez Durance) ; Nasluzov, S (Euratom, St. Paul Lez Durance) ; Noh, C H (Euratom, St. Paul Lez Durance) ; Thapa, B (Euratom, St. Paul Lez Durance) ; Worth, L (Euratom, St. Paul Lez Durance) et al.
The insulating vacuum within the ITER Cryostat has a prime purpose to minimize the heat load on the superconducting coil system by gas thermal conductivity. These coils are shielded from thermal radiation by an 80 K helium-cooled silver-coated thermal shield (TS) consisting of ~500 panels. [...]
2024 - 7 p. - Published in : IEEE Trans. Plasma Sci. 52 (2024) 3680-3686

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2025-02-01
06:02
Beam dynamics design and optimization of a standalone radio frequency quadrupole accelerator for swift heavy ions / Koyickal, Sruthy Varma ; Kumar, Sarvesh (IUAC, New Delhi) ; Jakhar, Niketan (Nehru U.) ; Thakur, Chandan (Nehru U.) ; Yogesh ; Kashyap, Manish K (Nehru U.) ; Lombardi, Alessandra (CERN)
A standalone high energy, 352 MHz radio frequency quadrupole (RFQ) design is presented, resulting into targeted energy gain of 1.8 MeV/u with a beam current of 1 mA for mass to charge (A/q) ratio ≤ 4. It avoids many separate stages of transverse and longitudinal matching of beams compared to a standard RFQ + DTL accelerator combination due to automatic adiabatic bunching, focusing and acceleration of the beam and thus prevent many beam diagnostic and vacuum components. [...]
2024 - 11 p. - Published in : Phys. Scr. 100 (2025) 015312

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2025-02-01
06:02
Motorized Universal Adjustment Platform for Micrometric Adjustment of Accelerator Components / Noir, Michel (CERN) ; Baillard, Dylan (CERN) ; Biedrawa, Piotr (CERN ; AGH-UST, Cracow) ; Gentini, Luca (CERN) ; Gothe, Aleksandur (Aarhus U.) ; Jasonek, Wojciech (CERN ; AGH-UST, Cracow) ; Nuiry, Francois-Xavier (CERN) ; Rude, Vivien (CERN) ; Seidenbinder, Regis (CERN) ; Sosin, Mateusz (CERN) et al.
In order to optimize alignment activities in a highly radioactive environment, the Geodetic Metrology Group at CERN has developed a standardized featuring 6 degree of freedom (DoF) Universal Adjustment Platform (UAP). After a first prototyping phase in 2021 with a manual UAP, the design has been consolidated and is now compatible with the installation of motorized actuators to form a remotely adjustable 5-6 DoF platform able to perform positioning with micrometre resolution. [...]
2024 - 3 p. - Published in : JACoW MEDSI 2023 (2024) THPPP026 Fulltext: PDF;
In : 12th Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation (MEDSI 2023), Beijing, China, 6 - 10 Nov 2023, pp.THPPP026

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2025-02-01
06:02
Prospects for light-ion operation at the HL-LHC: machine developments and physics opportunities / Alemany Fernandez, Reyes (CERN)
In recent years, the interest of the ion-physics community for conducting experiments at the CERN Accelerator Complex with lighter ions than lead has increased significantly. This has motivated the creation of the Future Ions Working Group in the CERN Accelerator and Technical Sector whose mandate is to define future ion operation needs based on the requests from LHC and fixed target experiments and their implications for the Ion Accelerator Complex. [...]
2025 - 6 p. - Published in : PoS LHCP2024 (2025) 335 Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.335

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2025-02-01
06:02
Pulse Generator for Impact Ionization Triggering in Thyristors / Senaj, V (CERN) ; Del Barrio Montañés, A A (CERN ; KIT, Karlsruhe) ; Kramer, T (CERN) ; Sack, M (KIT, Karlsruhe)
Fast HV generators are widely used in many industrial and scientific applications including particle accelerators. [...]
2024 - 2.
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2025-01-31
16:46
Modifications of the digital notch filter of the damper
CERN-SPS-ABM-Modifications-Note-85-10 - 1985 - 3.

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2025-01-31
06:37
The Large Hadron Collider's beam wire scanner consolidation / Emery, Jonathan (CERN) ; Guerrero, Ana (CERN) ; Goldblatt, Aurelie (CERN) ; Pasquino, Chiara (CERN) ; Belohrad, David (CERN) ; Roncarolo, Federico (CERN) ; Sullivan, Harry (CERN) ; Tassan-Viol, Jean (CERN) ; Littoz, Laetitia (CERN) ; Ramos, Maria Teresa (CERN) et al.
To serve the needs of the High Luminosity (HL) LHC, a consolidation of the beam wire scanner has been initiated. The instrument is a crucial tool for measuring the transverse beam profile by moving a thin carbon wire across the beam. [...]
2024 - 5 p. - Published in : JACoW IBIC 2024 (2024) WEP29 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.WEP29

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2025-01-31
06:37
SPS fast spill monitor developments / Benitez Berrocal, Sara (CERN) ; Goldblatt, Aurelie (CERN) ; Belohrad, David (CERN) ; Balci, Elif (CERN) ; Roncarolo, Federico (CERN) ; Martin Nieto, Miguel (CERN) ; Mazzoni, Stefano (CERN) ; Burger, Stephane (CERN)
The North Area facility (NA) receives the 400 GeV proton beam through a slow extraction process at the CERN Super Proton Synchrotron (SPS). To improve the SPS spill quality, it is crucial to monitor the spill intensity from the nA up to the µA range with a bandwidth extending from a few Hz up to several GHz along the extraction line. [...]
2024 - 5 p. - Published in : JACoW IBIC 2024 (2024) FRBC3 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.FRBC3

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2025-01-31
06:37
Design and first results of a cryogenic beam loss monitor installed at the LHC / Effinger, Ewald (CERN) ; Morales Vigo, Sara (CERN) ; Salvachua, Belen (CERN) ; Storey, James (CERN) ; Zamantzas, Christos (CERN) ; Griesmayer, Erich (TU Vienna ; CIVIDEC)
The Large Hadron Collider (LHC) is equipped with NiTb superconducting magnets operating at the cryogenic temperature of 2.9 K. A tiny fraction of proton beam at 7 TeV impacting the magnet coils has the potential to generate enough heat, leading to the loss of superconductivity in the magnets. [...]
2024 - 3 p. - Published in : JACoW IBIC 2024 (2024) THP24 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.THP24

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2025-01-31
06:37
The study of high-frequency pick-ups for electron beam position measurements in the AWAKE common beamline / Pakuza, Collette (CERN) ; Spear, Bethany (JAI, UK) ; Poimenidou, Eirini (CERN) ; Senes, Eugenio (CERN) ; Wendt, Manfred (CERN) ; Krupa, Michal (CERN) ; van Gils, Nikita (CERN ; Groningen U.) ; Burrows, Philip (JAI, UK) ; Liu, Shengli (Fermilab) ; Mazzoni, Stefano (CERN) et al.
The common beamline of the AWAKE experiment at CERN involves the co-propagation of two particle beams: protons with 48 nC bunch charge and 250 ps bunch length, and electrons with up to 600 pC bunch charge and approximately 4 ps bunch length. The existing operational beam position monitors at AWAKE cannot measure the electron bunches whilst the more-intense proton bunches are present, due to their low operating frequency. [...]
FERMILAB-CONF-24-0990-AD.- 2024 - 4 p. - Published in : JACoW IBIC 2024 (2024) TUDC2 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.TUDC2

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