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Accelerator Physics

Derniers ajouts:
2025-02-08
09:25
A systematic investigation of beam losses and position reconstruction techniques measured with a novel oBLM at CLEAR / King, Montague (CERN ; Liverpool U.) ; Christie, Alexander (Oxford U.) ; Salvachua, Belen (CERN) ; Welsch, Carsten (Liverpool U.) ; Effinger, Ewald (CERN) ; Meyer, Jean Michel (CERN) ; Esteban Felipe, Jose (CERN) ; Wolfenden, Joseph (Cockcroft Inst. Accel. Sci. Tech.) ; Korysko, Pierre (Oxford U.) ; Benitez, Sara (CERN) et al.
Optical Beam Loss Monitors (oBLMs) allow for cost-efficient and spatially continuous measurements of beam losses at accelerator facilities. A standard oBLM consists of several tens of meters of optical fibre aligned parallel to the beamline, coupled to photosensors at either or both ends. [...]
2024 - 5 p. - Published in : JACoW IBIC 2024 (2024) FRBC2 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.FRBC2

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2025-02-07
17:47
An overview of progress with the study of a structured laser beam for alignment / Niewiem, Witold Grzegorz (ETH Zurich (CH)) ; Mergelkuhl, Dirk (CERN) ; Gayde, Jean-Christophe (CERN)
The Structured Laser Beam (SLB) is a pseudo-non- diffractive optical beam characterized by the low divergence of the Inner Core (IC), down to 10 μrad, and the presence of concentric rings, with the most prominent being the Outer Ring (OR). [...]
CERN-ACC-NOTE-2024-0025.
- 2024 - 6.

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2025-02-07
11:07
Appendix - PPbar beam parameter list. Beam parameters for the basic scheme
CERN-SPS-AC-79-18-Appendix - 1979 - 8.

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2025-02-07
04:25
Imperfections and corrections / Tomás, R. (CERN) ; Buffat, X. (CERN) ; Coello, J. (CERN) ; Fol, E. (CERN) ; Malina, L. (CERN)
The measurement and correction of optics parameters has been a major concern since the advent of strong focusing synchrotron accelerators. [...]
arXiv:2006.10661.
- 31.
Fulltext

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2025-02-06
08:13
Prototypes and R&D; for undulator-based positron sources / Moortgat-Pick, Gudrid (Hamburg U. ; DESY) ; Formela, Manuel (Hamburg U.) ; Hamann, Niclas (Hamburg U.) ; Lengler, Tim (HZDR, Dresden) ; Lott, Dieter (HZDR, Dresden) ; Loisch, Gregor (DESY) ; Riemann, Sabine (DESY, Zeuthen) ; Sievers, Peter (CERN) ; Tenholt, Carmen (DESY) ; Yakopov, Grigory (DESY)
The undulator-based positron source is baseline design for the ILC. Recent progress in particular on the undulator mask designs, optic matching devices (R&D; for prototypes for pulsed solenoid, plasma lens) and on the target design (rotating wheel, material tests) are discussed. [...]
2024 - 9 p. - Published in : EPJ Web Conf. 315 (2024) 02002 Fulltext: PDF;
In : International Workshop on Future Linear Colliders (LCWS2024), Tokyo, Jp, 8 Jul - 8 Nov 2024, pp.02002

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2025-02-04
06:47
Numerical Optimization of 6D Cooling Solenoids for a Muon Collider / Fabbri, S (CERN) ; Bottura, L (CERN) ; Statera, M (LASA, Segrate)
In the current most evolved design concept of a machine for accelerating and colliding muons, there exists two long (∼1 km) channels for cooling newly created muons and antimuons. Termed the ‘6D cooling channels’, the beam is cooled in momentum and position space using a series of alternating polarity solenoids which create an oscillating field in the beam direction, absorbers and radio-frequency cavities. [...]
2025 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-7 Fulltext: PDF;

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2025-02-04
06:47
Laser-Induced Quench Study of the Magneto-Thermal Stability of Nb$_3$Sn Wires / Kuczynska, J H (CERN ; Geneva U.) ; Hopkins, S C (CERN) ; Senatore, C (Geneva U.) ; Boutboul, T (CERN)
In the pursuit of developing 14+ T Nb$_3$Sn magnets for a future energy-frontier circular collider, there is a growing demand for wires with enhanced critical current density (Jc), larger diameters, and lower copper-to-non-copper ratios. These requirements pose significant challenges to maintaining magnetothermal stability of the superconducting wires. [...]
2025 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-6 Fulltext: PDF;

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2025-02-04
06:47
Analytical and Numerical Study of Superconducting Dipole and Quadrupole Performance Limits for a Muon Collider / Novelli, Daniel (INFN, Genoa ; U. Rome La Sapienza (main)) ; Alfonso, Luca (INFN, Genoa) ; Bersani, Andrea (INFN, Genoa) ; Bottura, Luca (CERN) ; Caiffi, Barbara (INFN, Genoa) ; Farinon, Stefania (INFN, Genoa) ; Levi, Filippo (INFN, Genoa) ; Mariani, Francesco (U. Rome La Sapienza (main) ; LASA, Segrate) ; Mariotto, Samuele (Milan Bicocca U. ; LASA, Segrate) ; Pampaloni, Alessandra (INFN, Genoa) et al.
In accordance with the guidelines set forth in the Updated European Strategy for Particle Physics, the International Muon Collider Collaboration has been initiated to assess the feasibility of a Muon Collider facility with a center-of-mass energy of 10 TeV. The primary challenges stem from the brief muon lifetime at rest, which is limited to 2.2 µs. [...]
2025 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4000205

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2025-02-03
17:12
Advancements in CERN's Radiation Monitoring and Data Analysis Solutions for Radiation to Electronics applications / Bilko, Kacper
This thesis focuses on the aspects related to the protection of electronics in the CERN radiation environment, also known as Radiation Hardness Assurance [...]
CERN-THESIS-2024-325 - 145.


10.5281/zenodo.11032252

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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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