Mr
Min Chen
(Helmholtz - Zentrum Dresden - Rossendorf)
21/07/2017, 11:00
Speedposter_Controls, Synchronisation and Stability
Timing jitter between accelerator light sources and external laser systems
is one of the crucial parameters which limits temporal resolution and
sensitivity of ultrafast time-resolved experiments involving the large-scale
facilities. Here, we demonstrate proof of principle realization of a terahertz-based intrinsic synchronization concept that in principle is applicable at any accelerator...
Dr
Erdem Motuk
(Helmholtz Zentrum Berlin (HZB)), Dr
Karim Laihem
(Helmholtz Zentrum Berlin (HZB))
21/07/2017, 11:03
Speedposter_Controls, Synchronisation and Stability
Timing and synchronization systems are crucial components for the successful operation of the Energy Recovery Linac (ERL) at HZB known as bERLinPro and foreseen to start its commissioning phase in autumn 2018. The systems are used not only to synchronize different processes but also to time-stamp, to distribute reference frequencies and triggers to sub-components, and to ensure overall...
Mr
Matthias Felber
(DESY)
21/07/2017, 11:06
Speedposter_Controls, Synchronisation and Stability
This Poster gives an overview on the laser-based synchronization and pulsed optical reference distribution activities at DESY, covering large-scale systems like the one for the European XFEL with more than 30 actively stabilized fiber links with up to 3.4 km length, as well as the many other setups for different machines like REGAE, SINBAD, and FLASH including the plasma experiments within the...
Dr
Marie Kristin Czwalinna
(DESY)
21/07/2017, 11:09
Speedposter_Controls, Synchronisation and Stability
At modern Free Electron Lasers, the key for time resolved experiments is a high precision regulation of bunch parameters such as arrival time and compression. In order to achieve these requirements on the beam properties, both for single bunches and within a bunch train, it is necessary to combine RF field and beam based feedback loops, optimised for different frequency domains. To correct for...
Dr
Radoslaw Rybaniec
(DESY)
21/07/2017, 11:12
Speedposter_Controls, Synchronisation and Stability
The level radio frequency (LLRF) control systems stabilize the
accelerating field inside accelerating modules, and control the
resonance frequency of the individual cavities. Modern LLRF control
systems are designed as digital processing systems, and are based on
the field programmable gate array (FPGA) technology.
In the continuous wave (CW) operation, a special high power...
Mr
Mikheil Titberidze
(DESY)
21/07/2017, 11:15
Speedposter_Controls, Synchronisation and Stability
Mach-Zehnder Modulator based Laser-to-RF synchronization setup working at 800 nm wavelength has already shown excellent femtosecond level timing jitter and drift performance. Recently we evaluated the critical parts of the setup to further improve the timing jitter performance. This can be achieved by reducing the noise floor of the readout electronics and installing the well engineered 800 nm...
Yves Renier
(DESY)
21/07/2017, 11:18
Speedposter_Controls, Synchronisation and Stability
Conditioning of an L-band RF gun is a lengthy process (typically about 3 months).
The evaluation of the conditioning progress and of the reliability of the operation involves tens of sensors (RF measurements, photomultiplier signals, interlocks, pressure gauges, etc.) which are
acquired at 10 Hz repetition rate.
In order to simplify the gathering of this large volume of data from the data...
Mr
Christian Schmidt
(DESY)
21/07/2017, 11:21
Speedposter_Controls, Synchronisation and Stability
The Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) are constructing a 40 MeV Free Electron Laser in continuous wave RF operation. In order to control and monitor the four superconducting (SC) TESLA type cavities as well as the two normal conducting buncher cavities a MicroTCA.4 based LLRF system is foreseen. This highly modular system is further used to control the mechanical...
Ms
Louise Springer
(DESY)
21/07/2017, 11:24
Speedposter_Controls, Synchronisation and Stability
For a reliable and robust operation of free-electron lasers with bunch-arrival time variations on the sub 10fs scale, the short-term and long-term stability of the cavity field is an important factor.
Modern field-detectors using the non-IQ sampling scheme achieve at 1.3GHz operating frequency 0.01% amplitude, respectively 0.0035deg phase or 4fs stability within a measuring bandwidth of 1MHz....
Mr
Tomasz Kozak
(DESY)
21/07/2017, 11:27
Speedposter_Controls, Synchronisation and Stability
Precise femtoseconds synchronization is required for many advanced applications and experiments conducted with laser light generated by X-ray free-electron lasers facilities like FLASH or E-XFEL. In order to obtain this goal dedicated laser based synchronization system has been developed to simultaneously lock all independent components, including accelerator modules and all external optical...
Dr
Sergey Tomin
(European XFEL)
21/07/2017, 11:30
Speedposter_Controls, Synchronisation and Stability
We present recent developments of the empirical FEL tuning software tools within the OCELOT suite, including the experience from the European XFEL commissioning with using various photon and electron beam parameter objectives.
New development directions related to data analytics and accelerator physics model validation will be briefly discussed.
Ms
Ayla Nawaz
(DESY)
21/07/2017, 11:33
Controls, Synchronisation and Stability
Poster
Fault Diagnosis plays a large role for automating systems and making their operation safer and more reliable. From airplanes to cars to big industrial plants, fault diagnosis methods are applied to lessen downtime and predict maintenance as well as to avoid unnecessary failures. This poster discusses the challenges and possibilities to make use of an automatic fault diagnosis system for the XFEL.