European Organization for Nuclear Research

Design and Operation of a 3-Crystal Multi-Volume Reflection Array for Loss Reduction in CERN SPS Slow Extraction

F. M. Velotti, M. Bay, T. Calvet +10

The flux of protons slow-extracted from the CERN Super Proton Synchrotron (SPS) to the North Area experiments is limited by the induced radioactivity of the beam lost on the electr…

RF cavity design and beam loading effects in the rectilinear cooling channel for a muon collider

C. Barbagallo, A. Grudiev, D. Merenich +2

High-gradient normal-conducting RF cavities are crucial components of the rectilinear cooling channel in a muon collider, providing the accelerating field necessary to sustain the…

First Synchrotron Injection Attempt into The SuperKEKB High Energy Ring

N. Iida, Y. Funakoshi, H. Kaji +17

A synchrotron injection scheme for the SuperKEKB electron high-energy ring (HER) was implemented and experimentally evaluated as the first attempt with a top-up injection during be…

Modelling Conduction Cooling of Superconducting Accelerator Magnets using a Thermal Thin Shell Approximation

Emma Vancayseele, Erik Schnaubelt, Louis Denis +3

Understanding the thermal behaviour of superconducting accelerator magnets is essential to ensure their stable and reliable operation. This work presents an extension of the Finite…

New Challenges in Plasma Accelerators: Final Focusing for Wakefield Colliders

Keegan Downham, Spencer Gessner, Lewis Kennedy +2

The focusing of particle beams for collider experiments is crucial for maximizing the luminosity and thus the discovery potential of these machines. In recent years, plasma wakefie…

X-ray reflection: a FLUKA model and its application in the design of synchrotron light beamlines and CERN's Future Circular Collider

Giuseppe Mazzola, Sunil Chitra, Arnaud Devienne +10

Relying on atomic scattering factors from evaluated databases, a new model for the reflectivity of x rays on solid surfaces has been developed for FLUKA v4-6.0. This model accounts…

Beam Cleaning and Collimation Systems

Stefano Redaelli

Collimation systems in particle accelerators are designed to safely and efficiently dispose of unavoidable beam losses during operation. Their specific roles vary depending on the…

MuCol Milestone Report No. 7: Consolidated Parameters

Rebecca Taylor, Antoine Chancé, Dario Augusto Giove +459

This document is comprised of a collection of consolidated parameters for the key parts of the muon collider. These consolidated parameters follow on from the October 2024 Prelimin…

An electro-optical bunch profile monitor for FCC-ee

M. Reissig, E. Bründermann, S. Funkner +12

The Future Circular Lepton Collider (FCC-ee) presents challenges for a longitudinal bunch profile monitor due to its wide range of bunch lengths and charge densities across its fou…

Charting the Luminosity Capabilities of the CERN Large Hadron Collider with Various Nuclear Species

E. Waagaard, R. Bruce, R. Alemany Fernandez +3

The Large Hadron Collider (LHC) at CERN has been instrumental in recent advances in experimental high energy physics by colliding beams of protons and heavier nuclei at unprecedent…

An Online Data Analysis Framework for Small-Scale Physics Experiments

Hayden Ramm, Pascal Simon, Paraskevi Alexaki +11

A robust and flexible architecture capable of providing real-time analysis on diagnostic data is of crucial importance to physics experiments. In this paper, we present such an onl…

Rapid-cycling ReBCO dipole magnet concept for muon acceleration

Henryk Piekarz, Simon Otten, Anna Kario +1

We present a concept of the rapid-cycling 1.7 T ReBCO magnet for 1 to 10 kT/s ramping range as required for muon acceleration in a future muon collider presently under study. This…

physics.acc-ph2025★ 3 cited

Optimizing Superconducting Nb Film Cavities by Mitigating Medium-Field Q-Slope Through Annealing

B. Abdisatarov, G. Eremeev, H. E. Elsayed-Ali +9

Niobium films are of interest in applications in various superconducting devices, such as superconducting radiofrequency cavities for particle accelerators and superconducting qubi…

Geoff: The Generic Optimization Framework & Frontend for Particle Accelerator Controls

Penelope Madysa, Sabrina Appel, Verena Kain +1

Geoff is a collection of Python packages that form a framework for automation of particle accelerator controls. With particle accelerator laboratories around the world researching…

Decommissioning and Post-Irradiation Examination of the LHC Beam Dumps

N. Solieri, A. Lund, A. -P. Bernardes +21

The LHC beam dumps are responsible for the safe absorption of the Large Hadron Collider (LHC) particle beams. In 2018, the two 6.4-tonne beam dumps that had been in operation since…

CMS Token Transition

Brian Bockelman, Rahul Chauhan, Diego Ciangottini +10

Within the LHC community, a momentous transition has been occurring in authorization. For nearly 20 years, services within the Worldwide LHC Computing Grid (WLCG) have authorized b…

Controlling the Transverse Multipole Components in RF Cavity Modes using the Azimuthal Modulation Method

Laurence Wroe, Walter Wuensch, Robert Apsimon

Recent work introduced a systematic method for designing so-called azimuthally modulated RF cavities that support transverse magnetic modes composed of user-desired multipoles, ena…

physics.acc-ph2025★ 3 cited

Influence of nanoparticulates and microgrooves on the secondary electron yield and electrical resistance of laser-treated copper surfaces

P. Krkotić, T. Madarász, C. Serafim +4

Laser surface structuring has proven to be an effective technique for achieving a copper surface with secondary electron yield (SEY) values close to or below unity. However, the at…

Transient Finite Element Simulation of Accelerator Magnets Using Thermal Thin Shell Approximation

Erik Schnaubelt, Andrea Vitrano, Mariusz Wozniak +3

Thermal transient responses of superconducting magnets can be simulated using the finite element (FE) method. Some accelerator magnets use cables whose electric insulation is signi…