M. Bopp

CLIC readiness report

E. Adli, G. D’Auria, Nuria Catalán Lasheras, Vera Cilento et autres

Abstract The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear e + e − collider studied by the international CLIC and CLICdp collaborations hosted by CERN. CLIC uses a two-beam acceleration scheme, in which normal-conducting high-gradient 12 GHz accelerating structures are …

Beam-based commissioning of a novel X -band transverse deflection structure with variable polarization

P. González Caminal, Florian Christie, Richard D’Arcy, S. Jaster-Merz et autres

Longitudinal electron-beam diagnostics play a critical role in the operation and control of x-ray free-electron lasers, which rely on parameters such as the current profile, the longitudinal phase space, or the slice emittance of the particle distribution. On the one hand, the …

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High-Power Test of Two Prototype X-Band Accelerating Structures Based on SwissFEL Fabrication Technology

William Millar, Alexej Grudiev, Walter Wuensch, Nuria Catalán Lasheras et autres

This article presents the design, construction, and high-power test of two$X$-band radio frequency (RF) accelerating structures built as part of a collaboration between CERN and the Paul Scherrer Institute (PSI) for the compact linear collider (CLIC) study. The structures are a modified …

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Novel X -band transverse deflection structure with variable polarization

Paolo Craievich, M. Bopp, H.H. Braun, A. Citterio et autres

A collaboration between DESY, PSI and CERN has developed and built an advanced modular X-band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force.The prototype of the novel X-band TDS, the polarizable X-band (PolariX) …

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A compact and cost-effective hard X-ray free-electron laser driven by a high-brightness and low-energy electron beam

Eduard Prat, Rafael Abela, M. Aiba, Arturo Alarcon et autres

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The SwissFEL soft X-ray free-electron laser beamline: Athos

Rafael Abela, Arturo Alarcon, Jürgen Alex, Christopher Arrell et autres

The SwissFEL soft X-ray free-electron laser (FEL) beamline Athos will be ready for user operation in 2021. Its design includes a novel layout of alternating magnetic chicanes and short undulator segments. Together with the APPLE X architecture of undulators, the Athos branch …

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Commissioning of S-band Cavity Test Facility at Elettra for Conditioning of High Gradient Structures for the Fermi Linac Upgrade

N. Shafqat, M. Bopp, Luca Giannessi, Thomas G. Lucas et autres

FERMI is the seeded Free Electron Laser (FEL) user facility at Elettra laboratory in Trieste, operating in the VUV to soft X-rays spectral range. In order to extend the FEL spectral range to shorter wavelengths, a feasibility study for increasing the Linac …

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Design of Resonant Stripline BPM for an IR-FEL Project at NSRL

Xiaoyu Liu, M. Bopp, M. Dehler, Alfred Scherer

This paper presents the design of a 476MHz resonant stripline beam position monitor (BPM) for an IR-FEL machine at NSRL. This type of BPM was developed based on stripline BPM by moving the coupling feedthrough closer to the short end downstream. This …

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The PolariX-TDS Project: Bead-Pull Measurements and High-Power Test on the Prototype

Paolo Craievich, Ralph W. Assmann, M. Bopp, Hans-Heinrich Braun et autres

A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X- band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. The prototype of the novel X-band …

ch (code pays fourni par la source)

Sub-Femtosecond Time-Resolved Measurements Based on a Variable Polarization X-Band Transverse Deflecting Structures for SwissFEL

Paolo Craievich, Ralph W. Assmann, M. Bopp, Hans-Heinrich Braun et autres

The SwissFEL project, under commissioning at the Paul Scherrer Institut (PSI), will produce FEL radiation for soft and hard X-rays with pulse durations ranging from a few to several tens of femtoseconds. A collaboration between DESY, PSI and CERN has been established …

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Status of the Polarix-TDS Project

Paolo Craievich, Ralph W. Assmann, M. Bopp, Hans-Heinrich Braun et autres

A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X-band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. This innovative CERN design requires very high …

ch (code pays fourni par la source)

Consolidation and Extension of the High-gradient LINAC RF Technology at PSI

Paolo Craievich, M. Bopp, Hans-Heinrich Braun, Alessandro Citterio et autres

For SwissFEL a novel production process for high-gradient, high-precision C-band accelerating structures had been developed at PSI and was implemented for series production in collaboration with industry. The copper parts of the structures are machined and brazed relying on a ultra-high precision …