Thorsten Lamb
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View article: Impact of Seismic Activities on the Optical Synchronization System of the European X-ray Free-Electron Laser
Impact of Seismic Activities on the Optical Synchronization System of the European X-ray Free-Electron Laser Open
This study investigates the influence of seismic activities on the optical synchronization system of the European X-ray Free-Electron Laser. We analyze the controller I/O data of phase-locked-loops in length-stabilized links, focusing on t…
View article: Impact of seismic activities on the optical synchronization system of the European X-ray Free-Electron Laser
Impact of seismic activities on the optical synchronization system of the European X-ray Free-Electron Laser Open
This study investigates the influence of seismic activities on the optical synchronization system of the European X-ray Free-Electron Laser. We analyze the controller input/output data of phase-locked loops in length-stabilized links, focu…
View article: Subsystem Level Data Acquisition for the Optical Synchronization System at European XFEL
Subsystem Level Data Acquisition for the Optical Synchronization System at European XFEL Open
The optical synchronization system for the European X-Ray Free-Electron Laser provides sub-10 femtosecond timing precision * for the accelerator subsystems and experiments. This is achieved by phase locking a mode-locked laser oscillator t…
View article: Near-Infrared Laser System for Dielectric Laser Acceleration Experiments at SINBAD
Near-Infrared Laser System for Dielectric Laser Acceleration Experiments at SINBAD Open
The technique of dielectric laser acceleration (DLA) utilizes the strong field gradients generated by intense laser light near the surfaces of microscopic photonic structures, possibly allowing compact accelerator devices. We report on the…
View article: LLRF Control and Synchronization System of the ARES Facility
LLRF Control and Synchronization System of the ARES Facility Open
The linear accelerator ARES (Accelerator Research Experiment at SINBAD) is a new research facility at DESY. Electron bunches with a maximum repetition rate of 50 Hz are accelerated up to 155 MeV. The facility aims for ultra-stable sub-femt…
View article: First results on Femtosecond Level Photocathode Laser Synchronization at the SINBAD Facility
First results on Femtosecond Level Photocathode Laser Synchronization at the SINBAD Facility Open
SINBAD, the "short-innovative bunches and accelerators at DESY" is an accelerator research and development facility which will host various experiments. SINBAD-ARES linac is a conventional S-band linear accelerator which will be capable of…
View article: Precise Laser-to-RF Synchronization of Photocathode Lasers
Precise Laser-to-RF Synchronization of Photocathode Lasers Open
RF photo-injectors are used in various large, mid and small-scale accelerator facilities such as X-ray Free Electron Lasers (XFELs), external injection-based laser-driven plasma accelerators (LPAs) and ultrafast electron diffraction (UED) …
View article: Large-Scale Optical Synchronization System of the European XFEL with Femtosecond Precision
Large-Scale Optical Synchronization System of the European XFEL with Femtosecond Precision Open
Femtosecond pulsed optical synchronization systems have evolved over the last few years and are now a mature technique to synchronize FELs. A large-scale femtosecond-precision synchronization system with up to 44 end-stations has been cons…
View article: RF Controls Towards Femtosecond and Attosecond Precision
RF Controls Towards Femtosecond and Attosecond Precision Open
In the past two decades, RF controls have improved by two orders in magnitude achieving meanwhile sub-10 fs phase stabilities and 10⁻⁴ amplitude precision. Advances are through improved field detection methods and massive usage of digital …
View article: RF Operation Experience at the European XFEL
RF Operation Experience at the European XFEL Open
After its successful commissioning which took place during the first half of 2017, the European X-ray free electron laser is in now in regular operation delivering photons to users since September 2017. This paper presents an overview on t…
View article: Laser-to-RF Synchronization with Femtosecond Precision
Laser-to-RF Synchronization with Femtosecond Precision Open
Optical synchronization systems are already in regular operation in many FELs, or they will eventually be implemented in the future. In FLASH and the European XFEL, phase-stable optical reference signals are provided by a pulsed optical sy…
View article: Large-Scale Optical Synchronization System of the European XFEL
Large-Scale Optical Synchronization System of the European XFEL Open
At the European XFEL, a facility-wide optical synchronization system providing a femtosecond-stable timing reference at more than 40 end-stations had been developed and installed. The system is based on an ultra-stable, low-noise laser osc…
View article: Fs level laser-to-RF synchronization at REGAE
Fs level laser-to-RF synchronization at REGAE Open
The Relativistic Electron Gun for Atomic Exploration (REGAE) is a unique linear accelerator capable of producing ultrashort (∼ 10 fs) electron bunches for studying fast processes in matter by means of ultrafast electron diffraction (UED) e…
View article: Laser-to-RF Phase Detection with Femtosecond Precision for Remote Reference Phase Stabilization in Particle Accelerators
Laser-to-RF Phase Detection with Femtosecond Precision for Remote Reference Phase Stabilization in Particle Accelerators Open
The invention of a femtosecond stable Laser-to-RF phase detector allows to measure with femtosecond precision the relative phase between a phase stable optical reference and an RF signal. Thereby one can stabilize RF reference signals in m…
View article: Design and Operation of the Integrated 1.3 GHz Optical Reference Module with Femtosecond Precision
Design and Operation of the Integrated 1.3 GHz Optical Reference Module with Femtosecond Precision Open
In modern Free-Electron Lasers like FLASH or the European XFEL, the short and long-term stability of RF reference signals gains in importance. The requirements are driven by the demand for short FEL pulses and low-jitter FEL operation. In …
View article: Custom Optomechanics for the Optical Synchronization System at the European XFEL
Custom Optomechanics for the Optical Synchronization System at the European XFEL Open
Free-electron-lasers like the upcoming European XFEL demand highly reliable optical synchronization in range of few femtoseconds. The well known optical synchronization system at FLASH had to be re-engineered to meet XFEL requirements comp…
View article: Present and Future Optical-to-Microwave Synchronization Systems at REGAE Facility for Electron Diffraction and Plasma Acceleration Experiments
Present and Future Optical-to-Microwave Synchronization Systems at REGAE Facility for Electron Diffraction and Plasma Acceleration Experiments Open
Relativistic Electron Gun for Atomic Explorations (REGAE) is a Radio Frequency (RF) driven linear accelerator. It uses frequency tripled short photon pulses (~ 35 fs) from the Titanium Sapphire (Ti:Sa.) Laser system in order to generate el…