V. Vogel

Optimization of several operating parameters to increase the beam delivery time at the European XFEL

V. Vogel, V. Ayvazyan, Julien Branlard, Chris Christou et autres

The pulsed linac at EuXFEL, operated by DESY, is de-signed to deliver up to 2700 electron bunches during a beam delivery time of 600 µs within an RF flat-top time of 650 µs. The user community would like to have more photon …

de (code pays fourni par la source)

European XFEL High-Power RF System - the First 4 Years of Operation

Michael Bousonville, S. Choroba, T. Grevsmühl, Sebastian Göller et autres

In 2016, the installation of the European XFEL was completed and its 26 RF stations started operation in 2017. Each RF station consists of a 10 MW-1.3 GHz-multibeam klystron, a HV pulse modulator and a waveguide system to supply the superconducting cavities …

Results on FPGA-Based High-Power Tube Amplifier Linearization at DESY

Andrea Bellandi, V. Ayvazyan, Łukasz Butkowski, W. Cichalewski et autres

Vacuum-tube amplifiers are the most widespread type of radio frequency (RF) sources used to produce high-power signals needed for beam acceleration in superconducting cavities. At Deutsches Elektronen-Synchrotron (DESY), megawatt-rated klystrons are used to produce millisecond-long RF shots for pulsed operation in particle …

de, pl (code pays fourni par la source)

Operation of the European XFEL Towards the Maximum Energy

Mathieu Omet, V. Ayvazyan, Julien Branlard, S. Choroba et autres

After the initial commissioning of the available 25 radio frequency (RF) stations of the European XFEL (RF gun, A1, AH1 and stations A2 through A23) a maximum electron beam energy of 14.5 GeV was achieved, 3 GeV short of the design energy …

Status of the 10 MW MBKs during Commissioning of the European XFEL in DESY

V. Vogel, Łukasz Butkowski, A. Cherepenko, S. Choroba et autres

At present 26 RF stations for European XFEL are in operation. Each of the RF stations consists of a HV modulator located in a separate building on the DESY campus, up to 1600 m long 10 kV HV cables that connect the …

LLRF Operation and Performance at the European XFEL

Mathieu Omet, V. Ayvazyan, Julien Branlard, Łukasz Butkowski et autres

The European X-ray Free-Electron Laser (XFEL) at Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany is a user facility providing ultrashort hard and soft X-ray flashes with a high brilliance. All LLRF stations of the injector, covering the normal conducting RF gun, A1 (8 1.3 …

RF Operation Experience at the European XFEL

Julien Branlard, V. Ayvazyan, Łukasz Butkowski, M. Grecki et autres

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 the experience gathered during …

A Model-Based Fast Protection System for High-Power RF Tube Amplifiers Used at the European XFEL Accelerator

Łukasz Butkowski, V. Vogel, H. Schlarb, Jerzy Szabatin

The driving engine of the superconducting accelerator of the European X-ray free electron laser (XFEL) is a set of 27 radio frequency (RF) stations. Each of the underground RF stations consists of a multibeam horizontal klystron that can provide up to 10 …

pl, de (code pays fourni par la source)

Summary of the Test and Installation of 10 MW MBKs for the XFEL Project

V. Vogel, Łukasz Butkowski, A. Cherepenko, S. Choroba et autres

For the European XFEL project, horizontal multi-beam klystrons (MBK) which produce RF power up to 10 MW, at an RF frequency of 1.3 GHz, 1.5 ms pulse length and 10 Hz repetition rate, were chosen as RF power sources. All MBKs have …

Extended abstract for model based fast protection system for high power RF tube amplifiers used at European XFEL accelerator

Łukasz Butkowski, V. Vogel, H. Schlarb, Jerzy Szabatin

The driving engine of the superconducting accelerator of the European X-ray Free-Electron Laser (XFEL) are 27 Radio Frequency (RF) stations. Each of an underground RF station consists from multi-beam horizontal klystron which can provide up to 10MW of power at 1.3GHz. Klystrons …

de (code pays fourni par la source)

A metrology system for a high resolution cavity beam position monitor system

S. Walston, Stewart Boogert, Carl Chung, P Fitsos et autres

us, gb, jp, de (code pays fourni par la source)

Klystron Measurement and Protection System for XFEL on the MTCA.4 Architecture

Łukasz Butkowski, H. Schlarb, V. Vogel

The European X-ray Free-Electron Laser (XFEL) is under construction at the DESY in Hamburg. The driving engine of the superconducting accelerator will be 27 RF station. Each of an underground RF station consists from multi beam horizontal klystron (MBK) which can provide …