CERN Accelerating science

All CERN Accelerators documents

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2021-09-16
04:29
Beam halo from Touschek scattering in the KEK Accelerator Test Facility / Yang, R. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Aryshev, A. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Bambade, P. (IJCLab, Orsay) ; Bergamaschi, M. (CERN) ; Kubo, K. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Naito, T. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Terunuma, N. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Wallo, S. (IJCLab, Orsay) ; Zhang, J. (DESY)
Beam halo is one of the crucial issues limiting the machine performance and causing radioactivation in high-intensity accelerators. [...]
arXiv:2109.06503.
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2021-09-10
10:47
Muon Acceptance through the production straight of nuSTORM Ring / Jeamburaset, Sittha
In this work, we approximate actual particles of muons captured by the nuS-TROM ring as they decay from pion beam. [...]
CERN-STUDENTS-Note-2021-137.
- 2021.
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2021-09-10
09:51
Optimization of RF manipulations in the PS using Reinforcement Learning / Wulff, Joel Axel
The longitudinal structure of the beam is defined by a sequence of RF manipulations in the PS to achieve a bunch distance of 25 ns and a target longitudinal emittance of ǫl = 0.35 eVs for LHC type beams. [...]
CERN-STUDENTS-Note-2021-136.
- 2021.
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2021-09-08
07:22
Characterization of the slow extraction frequency response / Pari, M (CERN) ; Velotti, F M (CERN) ; Fraser, M A (CERN) ; Kain, V (CERN) ; Michels, O (CERN)
The main physics program of the CERN Super Proton Synchrotron (SPS) is dedicated to the fixed target physics experiments hosted in the North experimental Area (NA). Protons are delivered to the NA via third-integer resonant slow extraction over an almost 5 s flattop. [...]
2021 - 16 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 083501 Fulltext: PDF;

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2021-09-08
07:22
CPEDM: A Storage Ring Facility for Charged-Particle EDM Searches / Carli, Christian (CERN) ; Paolo, Lenisa (Ferrara U. ; INFN, Ferrara) ; Pretz, Jörg (RWTH Aachen U. ; KIT, Karlsruhe, IKP ; JARA, Aachen) ; Rathmann, Frank (KIT, Karlsruhe, IKP) ; Ströher, Hans (KIT, Karlsruhe, IKP)
Scientific Background: Symmetries and Physics Beyond the Standard Model..
2021 - 3 p. - Published in : Nucl. Phys. News 31 (2021) 27-29

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2021-09-08
07:22
Electrodeposition of copper applied to the manufacture of seamless superconducting rf cavities / Amador, L Lain (CERN) ; Chiggiato, P (CERN) ; Ferreira, L M A (CERN) ; Garcia-Tabares, E (CERN) ; Koettig, T (CERN) ; Meyer, M S (CERN) ; Perez-Fontenla, A T (CERN) ; Puthran, K (CERN) ; Rosaz, G (CERN) ; Taborelli, M (CERN)
Niobium thin film coated copper superconducting radio frequency elliptical cavities have demonstrated for many years their strong potential as an alternative to bulk niobium cavities. The thin film lower performance at high rf field is often attributed to the defects observed in the elaborated Nb layer, sometimes originated from defects inherited from the substrate itself. [...]
2021 - 11 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 082002 Fulltext: PDF;

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2021-09-06
17:00
The Forward Physics Facility: Sites, Experiments, and Physics Potential / Boyd, Jamie (CERN) ; Feng, Jonathan Lee (University of California Irvine (US)) ; Kling, Felix (SLAC) ; Garzelli, Maria Vittoria (CERN)
The Forward Physics Facility (FPF) is a proposal to create a cavern with the space and infrastructure to support a suite of far-forward experiments at the Large Hadron Collider during the High Luminosity era. Located along the beam collision axis and shielded from the interaction point by at least 100 m of concrete and rock, the FPF will house experiments that will detect particles outside the acceptance of all existing LHC experiments and will observe rare and exotic processes in an extremely low-background environment. [...]
CERN-PBC-Notes-2021-025.- Geneva : CERN, 2021 - 70.

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2021-09-06
15:00
Accelerating Schottky Analysis Pt. II / Kennedy, Lewis Charles
The parallelized L-BFGS-B minimization routine developed in stage 1 was extended to be used in the calculation of beam parameters of real, experimentally obtained spectra [...]
CERN-STUDENTS-Note-2021-124.
- 2021.
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2021-09-03
04:16
A novel non-adiabatic approach to transition crossing in a circular hadron accelerator / Giovannozzi, M. (CERN) ; Huang, L. (CAS, Beijing) ; Huschauer, A. (CERN) ; Franchi, A. (ESRF, Grenoble)
Crossing the transition energy is always a delicate process, representing a potential source of strong perturbations of the dynamics of charged particle beams in a hadron circular accelerator. [...]
arXiv:2109.00387.
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2021-09-02
20:11
Development of an Electrostatic Ion Beam Trap for Laser Spectroscopy of Short-lived Radionuclides / Lagaki, Varvara
Due to its high accuracy and resolution, collinear laser spectroscopy (CLS) is a powerful tool to measure nuclear ground state properties such as nuclear spins, electromagnetic moments and mean-square charge radii of short-lived radionuclides [...]
CERN-THESIS-2021-120 -


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