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M. Kopec

Publications and source records attributed to M. Kopec.

2 recordsLinked to original sources
arXiv2018

Operational experience of ALBA's Digital LLRF at SOLARIS Light Source

For control of RF cavities installed in Solaris storage ring light source the digital Low Level RF (dLLRF) system was necessary from the beginning of operation. Since there were no expertise at the new constructed facility and no time for development due to funds deadline, almost turn-key dLLRF from Alba has been implemented according to MAXIV selection. Thanks to high flexibility of dLLRF only small adaptations were needed in terms of interfaces to auxiliary systems and setup of parameters. This paper summarizes operational experience about installation, commissioning, learning-curve from entry-level user, beam operation and future upgrades of this dLLRF.

physics.acc-ph↗
arXiv2017

Higgs Physics at the CLIC Electron-Positron Linear Collider

The Compact Linear Collider (CLIC) is an option for a future e+e- collider operating at centre-of-mass energies up to 3 TeV, providing sensitivity to a wide range of new physics phenomena and precision physics measurements at the energy frontier. This paper is the first comprehensive presentation of the Higgs physics reach of CLIC operating at three energy stages: sqrt(s) = 350 GeV, 1.4 TeV and 3 TeV. The initial stage of operation allows the study of Higgs boson production in Higgsstrahlung (e+e- -> ZH) and WW-fusion (e+e- -> Hnunu), resulting in precise measurements of the production cross sections, the Higgs total decay width Gamma_H, and model-independent determinations of the Higgs couplings. Operation at sqrt(s) > 1 TeV provides high-statistics samples of Higgs bosons produced through WW-fusion, enabling tight constraints on the Higgs boson couplings. Studies of the rarer processes e+e- -> ttH and e+e- -> HHnunu allow measurements of the top Yukawa coupling and the Higgs boson self-coupling. This paper presents detailed studies of the precision achievable with Higgs measurements at CLIC and describes the interpretation of these measurements in a global fit.

hep-ex↗