Dr
Sergey Tomin
(European XFEL)
20/07/2017, 10:00
Speedposter_Beam Dynamics and Photon Sources
OCELOT is an open source toolkit for beam dynamics and free electron laser simulations written in Python. Recently the main collective effects (space charge, coherent synchrotron radiation, wakefield) were implemented in OCELOT. In developing of the full-dimensional numerical modeling we pursue two important competitive aspects: the simulation has to be fast and has to include accurate...
Dr
Takanori Tanikawa
(European XFEL)
20/07/2017, 10:03
Speedposter_Beam Dynamics and Photon Sources
A THz radiation for pump-probe experiments etc. is under consideration at the European XFEL using laser-based and / or accelerator-based techniques. Wherein, a superconducting THz undulator as an afterburner would be one option because it has an advantage to produce wide-range radiation thanks to an ultra-short bunch and high repetition rate. A challenge to this approach is the usage of very...
Dr
Dongfang Zhang
(Deutsches Elektronen-Synchrotron)
20/07/2017, 10:06
Speedposter_Beam Dynamics and Photon Sources
We present a THz-based electron accelerator and electron streak camera using a novel multilayer waveguide structure to utilize strong-field single-cycle THz pulses. It allows for very efficient electron acceleration and streaking using transversely-coupled short THz-waveguides with dielectric delay sections which realize phase-matching between electrons and a single-cycle THz pulse....
Dr
Houjun Qian
(DESY-Zeuthen)
20/07/2017, 10:09
Beam Dynamics and Photon Sources
Talk
PITZ is a photoinjector test facility for FLASH and European XFEL, and it has been proposed to be a prototype machine to develop an accelerator based THz source for European XFEL pump-probe experiment. In addition, the machine can also support femtosecond electron diffraction at the same beam repetition rate as European XFEL, which brings XFEL users more flexibility for different experiments....
Mr
Good James
(PITZ, DESY)
20/07/2017, 10:12
Speedposter_Beam Dynamics and Photon Sources
The optimization of photoinjectors is crucial for the successful operation of linac-based free electron lasers, and beam dynamics simulations have shown that ellipsoidal photocathode laser pulses result in significantly lower electron beam emittance than that of conventional cylindrical pulses.
Therefore, in collaboration with the Institute of Applied Physics (Nizhny Novgorod, Russia) and...
Mr
Prach Boonpornprasert
(DESY, Zeuthen)
20/07/2017, 10:15
Speedposter_Beam Dynamics and Photon Sources
The Photo Injector Test facility at DESY, Zeuthen site (PITZ), develops high brightness electron sources for modern linac-based Free Electron Lasers (FELs). The PITZ accelerator can also be considered as a suitable machine for the development of an IR/THz source prototype for pump-probe experiments at the European XFEL. One of the interesting options for the IR/THz generation with PITZ is to...
Mr
Paul Volz
(Helmholtz-Zentrum Berlin)
20/07/2017, 10:18
Speedposter_Beam Dynamics and Photon Sources
bERLinPro is a high average current energy recovery LINAC prototype. Although the space charge driven microbunching instability (MBI) is not expected to occur during the nominal operation of bERLinPro, there are possibilities to drive the microbunching. These include the use of a FODO-Lattice in the straight section and/or shortening of the bunch length. Thus, taking advantage of these...
Mr
Igor Isaev
(DESY)
20/07/2017, 10:21
Speedposter_Beam Dynamics and Photon Sources
The main task of PITZ facility (Photo Injector Test Facility at DESY, Zeuthen site) is developing and testing of photoelectron sources (photoelectron guns) for free-electron lasers like FLASH and European XFEL.
The operation of the multiple gun prototypes discovered the presence of photoelectron beam asymmetries in transverse shape and projected emittance between x and y planes.
The studies...
Georgios Kourkafas
(HZB)
20/07/2017, 10:24
Speedposter_Beam Dynamics and Photon Sources
Talk
Status and test-stand of the SRF photoinjector for bERLinPro
Prof.
Shaukat Khan
(Technische Universitaet Dortmund)
20/07/2017, 10:27
Speedposter_Beam Dynamics and Photon Sources
Seeding is the interaction of electrons with an external radiation pulse to produce a particular radiation output. This may be the radiation of a free-electron laser (FEL) at a linear accelerator or an ultrashort synchrotron radiation pulse at a storage ring. Aspects of FEL seeding may also be tested at storage rings with high stability of the beam and high repetition rate. Examples of seeding...
Marie Rehders
(Hamburg Universy)
20/07/2017, 10:30
Speedposter_Beam Dynamics and Photon Sources
The experience on the generation of very short FEL pulses in the soft x-ray range in the SASE-mode at the high-gain free-electron laser FLASH is presented.
The usage of short injector laser pulses and thus short, low charge bunches directly at the photo-cathode eases the required bunch compression factor for short pulses below 10 fs duration. The corresponding beam dynamics of such short...
Dr
Chun-Sung Jao
(DESY)
20/07/2017, 10:33
Speedposter_Beam Dynamics and Photon Sources
The diffusive shock acceleration at the forward shocks of shell-type supernova remnants is considered as a process to generate high energy cosmic ray particles. For efficient acceleration, magnetic field fluctuations stronger than the background interstellar field are indispensable in the upstream region of the shock. Bell’s instability, a cosmic-ray stream driven instability, is proposed as...
