Publications de Rasmus Ischebeck

Proof-of-principle e+ source for future colliders

Stefan Müller, Rasmus Ischebeck, Anastasiya Magazinik, Mike Seidel, Nicolas Vallis, Paolo Craievich

2024

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

Lukas Stingelin, Majed Chergui, Paul Beaud, Thomas Schietinger, Christopher Alexander Arrell, Thomas Schmidt, Leonid Rivkin, Christoph Peter Hauri, Giulia Fulvia Mancini, Rasmus Ischebeck, Eugenio Ferrari, Camila Bacellar Cases Da Silveira, Mike Seidel, Paolo Craievich, Sven Reiche

We present the first lasing results of SwissFEL, a hard X-ray free-electron laser (FEL) that recently came into operation at the Paul Scherrer Institute in Switzerland. SwissFEL is a very stable, compact and cost-effective X-ray FEL facility driven by a lo ...

Nature Publishing Group2020

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

Thomas Schietinger, Christopher Alexander Arrell, Thomas Schmidt, Rasmus Ischebeck, Eugenio Ferrari, Christoph Bostedt, Paolo Craievich, Sven Reiche

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 undulator ...

2019

Generation and measurement of sub-micrometer relativistic electron beams

Christian David, Rasmus Ischebeck, Eugenio Ferrari

The generation of low-emittance electron beams has received significant interest in recent years. Driven by the requirements of X-ray-free electron lasers, the emittance of photocathode injectors has been reduced significantly, with corresponding increase ...

2018

The ACHIP experimental chambers at the Paul Scherrer Institut

Leonid Rivkin, Christian David, Rasmus Ischebeck, Eugenio Ferrari, Sven Reiche

The Accelerator on a Chip International Program (ACHIP) is an international collaboration, funded by the Gordon and Betty Moore Foundation, with the goal of demonstrating that laser-driven accelerator can be integrated on a chip to fully build an accelerat ...

ELSEVIER SCIENCE BV2018

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Leonid Rivkin, Christoph Peter Hauri, Ishkhan Gorgisyan, Rasmus Ischebeck, Junqiu Liu

The accurate measurement of the arrival time of a hard X-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This manuscript presents the ...

Optical Society of America2014

A scheme for a shot-to-shot, femtosecond-resolved pulse length and arrival time measurement of free electron laser x-ray pulses that overcomes the time jitter problem between the FEL and the laser

Fernando Ardana Lamas, Christoph Peter Hauri, Ishkhan Gorgisyan, Rasmus Ischebeck

The recent entry of X-ray free electron lasers (FELs) to all fields of physics has created an enormous need, both from scientists and operators, for better characterization of the beam created by these facilities. Of particular interest is the measurement ...

Institute of Physics2014

Electron beam characterization of a combined diode rf electron gun

Stefan Yves Gabriel Binder, Christoph Peter Hauri, Rasmus Ischebeck

Experimental and simulation results of an electron gun test facility, based on pulsed diode acceleration followed by a two-cell rf cavity at 1.5 GHz, are presented here. The main features of this diode-rf combination are: a high peak gradient in the diode ...

American Physical Society2010

Wavelength-tunable UV laser for electron beam generation with low intrinsic emittance

Christoph Peter Hauri, Rasmus Ischebeck

We developed a powerful UV laser at a central wavelength varying from 260-283 nm. The laser system based on a frequency-trippled Ti:sapphire amplifier delivers mJ pulse energy within a duration of 1-10 ps (fwhm) with 1.5 nm spectral width (fwhm). The syste ...

2010