Kristóf Brunner
YOU?
Author Swipe
View article: Characterising the Surface Resistance of Laser-Treated LHC Beam Screens with the Shielded Pair Method
Characterising the Surface Resistance of Laser-Treated LHC Beam Screens with the Shielded Pair Method Open
The presence of strong electron clouds in the quadrupole magnetic field regions of the Large Hadron Collider (LHC) leads to considerable heating that poses challenges for the cryogenic cooling system, and under certain conditions to proton…
View article: Selective laser processing of particle accelerator beam screen surfaces for electron cloud mitigation
Selective laser processing of particle accelerator beam screen surfaces for electron cloud mitigation Open
The material properties of laser-treated LHC beam screens with low SEY are examined to validate compatibility with the operation conditions of particle accelerators.
View article: Shielded Pair Method for Beam Screen Surface Resistance Measurement at Cryogenic Temperature
Shielded Pair Method for Beam Screen Surface Resistance Measurement at Cryogenic Temperature Open
The shielded pair resonator method is a useful tool in the measurement of accelerator components, such as the beam screens used in the Large Hadron Collider (LHC), the High-Luminosity (HL) LHC, or future accelerators. It can measure the re…
View article: Training-free performance of the wax-impregnated SuShi septum magnet
Training-free performance of the wax-impregnated SuShi septum magnet Open
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 Universi…
View article: Dielectric resonator to measure surface resistance of accelerator components at room temperature and 77 K
Dielectric resonator to measure surface resistance of accelerator components at room temperature and 77 K Open
We measured the surface resistance of titanium, amorphous carbon, and nonevaporable getter (NEG) coatings on copper samples, representative of surface treatments of beam-facing components in the High-Luminosity Large Hadron Collider at CER…
View article: Shielded Pair Method for Cylindrical Surface Resistance Measurement at Cryogenic Temperature
Shielded Pair Method for Cylindrical Surface Resistance Measurement at Cryogenic Temperature Open
The shielded pair resonator method was already used in the past at CERN to measure the surface resistivity of the LHC beam screen both at room temperature and cryogenic temperature. We have refined and adapted the measurement to be able to…
View article: SPS Slow Extraction Losses and Activation: Update on Recent Improvements
SPS Slow Extraction Losses and Activation: Update on Recent Improvements Open
Annual high intensity requests of over 10¹⁹ protons on target (POT) from the CERN Super Proton Synchrotron (SPS) Fixed Target (FT) physics program continue, with the prospect of requests for even higher, unprecedented levels in the coming …
View article: Improving the slow extraction efficiency of the CERN Super Proton Synchrotron
Improving the slow extraction efficiency of the CERN Super Proton Synchrotron Open
In the last few decades, the use of particle accelerators became widespread not only in different fields of physics (eg. particle physics, particle astrophysics) but also in other sciences [1]. Two interesting examples of this are biology a…
View article: NbTi/Nb/Cu Multilayer Shield for the Superconducting Shield (SuShi) Septum
NbTi/Nb/Cu Multilayer Shield for the Superconducting Shield (SuShi) Septum Open
A passive superconducting shield was proposed earlier to realize a high-field (3-4 T) septum magnet for the Future Circular Collider. This paper presents the experimental results of a potential shield material, a NbTi/Nb/Cu multilayer shee…
View article: Use of a Massless Septum to Increase Slow-Extraction Efficiency
Use of a Massless Septum to Increase Slow-Extraction Efficiency Open
The Super Proton Synchrotron (SPS) at CERN provides slow-extracted beam for Fixed Target experiments in the North Area. For the higher extracted beam intensities requested by future experimental proposals, beam-loss induced activation will…