Sabine Schindler
(LMU Mรผnchen)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
At the ATLAS facility electron beams with energy of more than 100 MeV can be generated by laser wakefield acceleration (LWFA). These beams can be used to produce highly brilliant and extremely short x-ray pulses by Thomson scattering of the counter propagating laser pulse, but previous experiments produced an insufficient number of photons for applications.
Mathematically can be shown...
Mr
Roman Kniaziev
(V. N. Karazin Kharkiv National University)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
An important issue in the study of transverse dynamics of charged particles bunches is determining the minimum transverse dimensions of the bunch. In the paper[1] was examined acceleration scheme in which to focusing the accelerated bunch transit channel in the dielectric structure was filled plasma. It has been shown that there is a location of bunches, which can achieve simultaneous radial...
Mr
Matthew Schwab
(Friedrich-Schiller-University Jena)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
Several applications of a few-cycle optical probe-pulse (fc-probe) in Laser Wakefield Acceleration (LWFA) experiments on the JETI 40 TW laser system in Jena, Germany will be described. This research is motivated by the need for diagnostics of the plasma wakefield with micron-scale spatial and femtosecond-scale temporal resolution to gain a deeper understanding into the physics underlying the...
Dr
sandrine Dobosz Dufrรฉnoy
(CEA-Saclay)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
Laser-plasma acceleration has demonstrated its huge potential for the generation of relativistic electron bunches. Considering the limitations of single stage acceleration as well as the emergence of PW lasers all over the world, multi-stage accelerator schemes have been proposed to scale the electron energy up to the 10โs GeV level and even more. In the context of the French CILEX project,...
Dr
Vladyslav Libov
(DESY)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
FLASHForward is a beam-driven plasma wakefield acceleration facility, currently under construction at DESY (Hamburg, Germany), aiming at the stable generation of electron beams of several GeV with small energy spread and emittance.
High-quality 1 GeV-class electron beams from the free-electron laser FLASH will act as the wake driver.
The setup will allow studies on external injection as...
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
FACET operates as a National User Facility delivering unique beams to a diverse community of users. The evolution of FACET into the FACET-II test facility is is proposed to provide the DOE with a unique capability to develop advanced acceleration and coherent radiation techniques with electron and positron beams. Based on efficient use of existing linac infrastructure, the facility will...
Ms
Maria Katharina Weikum
(DESY / University of Strathclyde)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
The generation of ultrashort accelerated electron bunches is essential for the production of radiation pulses in the attosecond regime with most current techniques, such as Thomson scattering and free-electron lasers.
Using particle-in-cell simulations and analytical models, the suitability for the experimental realization of a novel scheme producing attosecond duration electron bunches from...
Ms
Maria Reuter
(Helmholtz Institut Jena)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
We present experimental results on laser-driven electron acceleration achieved with the POLARIS laser in Jena (Germany) delivering pulses of 2.4 J in 160-170 fs. Here, we observed the generation of quasi-monoenergetic electron pulses by self-modulated laser wakefield acceleration in a gas cell. We found a clear correlation between the accelerating length and the peak electron energies. Through...
Mr
Max Gilljohann
(LMU Munich)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
We present studies on improving the quantitative reproducibility of laser-wakefield acceleration experiments conducted at LMU with particle-in-cell simulations. The evolution of a simulation is sensitive to numerical instabilities or artifacts and the correct description of the laser pulse and the plasma, whereas usually their profiles are oversimplified to basic analytic functions. We study...
Dr
Sven Steinke
(Lawrence Berkeley National Laboratory)
9/14/15, 7:30โฏPM
WG2 - Ion beams from plasmas
poster
Sven Steinke, Stepan Bulanov, Qing Ji, Thomas Schenkel, Eric H. Esarey, and Wim P. Leemans (LBNL)
BELLA, the Berkeley Lab laser accelerator center hosts a 1 PW Ti:sapp laser with 1 Hz repetition rate, where electron acceleration to 4.5 GeV was demonstrated recently [1]. For electron acceleration, irradiances of up to 1019 W/cm2 are desired and these are implemented with a long focal length...
Mr
Christian Markus Werle
(University of Hamburg / Center for Free Electron Laser Science)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
Within the LAOLA collaboration the University of Hamburg and DESY work closely together to combine university research in the field of plasma-based acceleration with the expertise of a large and well-established accelerator facility. In this poster we will present the design and development of two elements of the future LUX beamline, a dedicated beamline for generation of laser-plasma-driven...
Mr
Ajay Kawshik Arunachalam
(University of Jena)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
During the interaction between an intense laser pulse and a plasma medium, energetic particles such as, electrons, protons and ions can be accelerated through various acceleration mechanisms. For electron densities close to critical density (ne ~= nc), laser-plasma interaction is under explored. Here, it is expected that the laser energy absorbed by the plasma is enhanced due to resonance...
Mr
Leonid Pugachev
(Joint Institute for High Temperatures RAS)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
The generation of accelerated electrons from foam targets under the action of laser pulses is numerically studied in the work. This investigation is important for creation and optimization of laser driven sources of particles and radiation for diagnostics of matter states with high energy density. In performed 3D PIC simulations with the code VLPL, the foam is treated as plasma with near...
Dr
Yuancun Nie
(DESY)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
We report our studies on the single bunch driven plasma wakefield acceleration (PWFA) in quasi-nonlinear regime (QNL). For the QNL, a weak blowout can be obtained by using a relatively low-charge driving bunch with a density larger than that of the background plasma. In this case, the bubble formation leads to ultra-high accelerating wakefield and a transformer ratio exceeding the linear limit...
Mr
Georg Wittig
(Universitรคt Hamburg, CFEL)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
We present a novel and very robust scheme for optical triggered electron bunch generation in plasma wakefield accelerators. In this technique a quasi-stationary plasma column is ignited prior the arrival of the plasma wave by a transversally propagating, focused laser pulse. This localized plasma torch is easy tunable by shifting the laser focal position and spot size and causes a strong...
Leonida Antonio Gizzi
(PI)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
We present recent results concerning repetitive operation of a laser-driven electron beam-line in the self-injection regime to deliver a stable, high charge electron bunch in the 20 MeV energy range. We describe the main properties of the acceleration regime and we show recent experimental results concerning the dosimetry carried out for radiobiology tests of direct electron beam irradiation...
Mr
Osip Lishilin
(DESY)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
A proof-of-concept experiment for the AWAKE experiment is in preparation at the Photo-Injector Test Facility at DESY, Zeuthen site (PITZ). The goal of the experiment is to observe and measure the energy and density self-modulation of a long electron beam passing through a laser generated lithium plasma.
A new type of plasma cell was manufactured to fulfill feasible constraints of the...
Dr
Janet Schmidt
(CERN)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
The AWAKE project at CERN is planned to study proton driven plasma wakefield acceleration of an externally injected electron beam. The CNGS extraction line will be modified to provide the plasma cell with a proton beam from the CERN SPS. A new transfer line was designed to transport the electrons from an RF gun to the cell. The commissioning of the proton line will take place in 2016 for the...
Mr
Alexander Knetsch
(University of Hamburg)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
A comprehensively synchronized beam-laser-plasma photocathode setup has been developed at FACET within the E210 program. Spatial and temporal alignment allow to carry through proof-of-concept experiments, aiming at demonstrating the feasibility of underdense photocathode "Trojan Horse" plasma wakefield acceleration. Multiple laser pulses are synchronized with the 20 GeV electron driver beam...
Ans Pardons
(CERN)
9/14/15, 7:30โฏPM
WG1 - Electron beams from plasmas
poster
The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) is a proof-of-principle R&D experiment at CERN, installed in the former CNGS facility. It is the worldโs first proton driven plasma wakefield acceleration experiment, using a high-energy proton bunch to drive a plasma wakefield for electron beam acceleration. Modifying the CNGS underground high radiation area for AWAKE...
Ms
Anna Giribono
(ROMA1)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
The ELI-NP Gamma Beam Source is now under construction in Magurele - Bucharest (RO). Here an advanced source of gamma photons with unprecedented specifications of brilliance (>10^21), monochromaticity (0.3%) and energy tunability (0.2โ20.0 MeV) is being built, based on Inverse Compton Scattering in the head-on configuration between an electron beam of maximum energy 740 MeV and a high quality...
Dr
Olaf Grulke
(MPI for Plasma Physics)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
A prototype high density helicon discharge is under development, which aims to demonstrate its feasibility as a plasma cell for advanced accelerator schemes as AWAKE. The discharge mechanisms relies on the non-resonant absorption of low-frequency plasma waves (with a frequency typically on the order of 10MHz), which are excited by antennas outside the vacuum chamber. The external wave...
Ms
Yasmine Israeli
(Max Planck Institute for Physics)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Linac based X-ray FELs impact many fields of science. Some experiments require larger photon flux and shorter wavelength. Increasing the beam energy increases the pulse energy and decreases the radiation wavelength.
We explore with numerical simulations the possibility of using a plasma wakefield accelerator scheme to increase the beam energy without significantly increasing the accelerator...
Prof.
Vasili Tsakanov
(CANDLE Synchrotron Research Institute)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
AREAL laser driven RF gun provides the 2-5 MeV energy ultrashort electron pulses for experimental study in life and materials sciences. We report the first experimental results of the AREAL electron beam application in the study of molecular-genetic effects of ultrafast radiation, electro-physical properties of silicon and silicon-dielectric structures, characteristics of ferroelectric...
Dr
Yine Sun
(Argonne National Lab.)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Phase-space manipulation of electron beam generated from a photo-injector has been experimentally demonstrated in the past several years at beam energy above 10 MeV. In this paper, we study the multi-stage phase space manipulation of a lower energy beam,such as the beam extracted from a high-brightness photo-cathode RF gun. The numerical simulations of collective effects including space...
Mr
Kenichi Shinomiya
(The University of Tokyo)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Desktop size Dielectric Ion Accelerator (DIA) is being developed at The University of Tokyo and KEK in Japan. X-ray, proton beam, and carbon beam have been widely used in radiation therapy for cancer treatment in order to study the factors that decide the radiation therapy sensitivity. It is important to analyze the cellular response to these radiations. However, the biological irradiation...
Mr
Jakob Krรคmer
(Danfysik A/S)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
The design of an electron beam Final Focus System (FFS) and first experimental results aiming for high-flux laser-Thomson backscattering X-ray sources at ELBE are presented. A telescope system consisting of four permanent magnet based quadrupoles was found to have significantly less chromatic aberrations than e.g. a quadrupole triplet. Consequently, smaller focal spot sizes can be achieved,...
Dr
John Dale
(DESY)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
A core study at the Plasma Wakefield Accelerator (PWFA) FLASHForward is the acceleration of an externally injected witness electron bunch in the wake generated by a driver electron bunch. To perform these external injection experiments the drive and witness electron bunches require a separation of the order of 100 microns. To generate the electron bunches a pulse stacker has been constructed...
Dr
Yuancun Nie
(DESY)
9/14/15, 8:00โฏPM
WG3 - Electron beams from electromagnetic structures, including dielectric and laser-driven structures
poster
Short, high-brightness relativistic electron bunches can drive ultra-high wakefields in the dielectric wakefield accelerators (DWFAs). Such effect can be used to generate high power THz coherent Cherenkov radiation, accelerate trailing particles in a witness bunch with gradient two orders of magnitude larger than that in the conventional RF linear accelerators, and produce energy modulation or...
Mr
Jun Zhu
(MPY, DESY)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Electron bunches with sub-fs duration are required in order to achieve high quality beams by laser-driven plasma acceleration with external injection. SINBAD (Short Innovative Bunches and Accelerators at DESY) is a proposed dedicated accelerator research and development facility at DESY. One of the baseline experiments at SINBAD is ARES (Accelerator Research Experiment at SINBAD), which will...
Prof.
Vasili Tsakanov
(CANDLE Synchrotron Research Institute)
9/14/15, 8:00โฏPM
WG3 - Electron beams from electromagnetic structures, including dielectric and laser-driven structures
poster
The new high frequency traveling wave structure with single TM01 slow mode is studied. The structure is composed of a metallic tube with an internally coated low conductive thin layer. It is shown that the impedance of the internally coated metallic tube (ICMT) has a narrow-band single resonance at a high frequency. The resonant frequency corresponds to synchronous TM01 mode excited by the...
Prof.
Jay L. Hirshfield
(Yale University, New Haven, CT 06511, USA), Dr
Vladimir E. Teryaev
(Omega-P, Inc., New Haven, CT 06510, USA)
9/14/15, 8:00โฏPM
WG3 - Electron beams from electromagnetic structures, including dielectric and laser-driven structures
poster
A novel multi-beam linear accelerator EVT (Electron Voltage Transformer) concerns to a class of twoโbeam accelerators. It comprises a common electron gun generating drive beam-lets and an accelerated beam. All beams are modulated in RF modulators and pass in accelerating structure, where interaction of beams occurs in uncoupled with each other and inductive tuned cavities. A phasing of beams...
174.
Optimization study of a transport line for electron beams generated by laser-plasma interaction
Massimiliano Sciscio'
(ROMA1)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Many facilities worldwide are currently studying electron beams generated by laser-plasma interaction and looking in its usability for developing laser-driven electron beamlines. Many efforts are focused on the plasma source, the capture and transport of the laser-generated particles in order to obtain electron beams with characteristics comparable to those obtained in traditional accelerator...
Maria Pia Anania
(LNF)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Plasma wakefield acceleration is the most promising acceleration technique known nowadays, able to provide very high accelerating fields (10โ100 GVmโ1), enabling acceleration of electrons to GeV energy in few centimetres. However, the quality of the electron bunches accelerated with this technique is still not comparable with that of conventional accelerators; Radiofrequency-based...
Fabio Cardelli
(ROMA1)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
ELI-NP is a gamma-source based on electron-photon Compton back-scattering under construction in Romania by the European consortium Eurogammas. The collision of a train of 32 electron bunches accelerated up to โ750 MeV by a linac with an intense 1000 nm laser pulse recirculated 32 times through the IP at a repetition rate of 100 Hz produces photons with tunable energy. The electron linac energy...
piot Philippe
(northern Illinois University & Fermilab)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
In this contribution we describe a possible layout of a superconducting linac that could provide shaped high-charge (up 5 nC) electron "drive" bunches to excite wakefield in a dielectric or plasma wakefield accelerator. The work capitalize on a new class of smooth shape recently proposed [F. Lemery and P. Piot, ArXiV arXiv:1505.06218 (2015)]. Start-to-end simulations and performances ofthe...
Davide Gamba
(CERN; John Adams Institute (JAI)), Mr
Wilfrid Farabolini
(CEA/IRFU and CERN)
9/14/15, 8:00โฏPM
WG3 - Electron beams from electromagnetic structures, including dielectric and laser-driven structures
poster
Since 2008, the Compact Linear Collider (CLIC) project is running a test facility called CTF3 where the two-beam acceleration principle has been successfully validated. This facility is composed of a Drive Beam Linac of 3.5 Amps, a delay loop and a combiner ring where the electron bunches are interleaved by a factor 8 up to 28 Amps and an experimental room (CLEX) where the beam energy is...
Mr
Konstantin Khrennikov
(Ludwig-Maximilians-University Munich (LMU), Max-Planck-Institute for Quantum Optics(MPQ))
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
We present an all-laser-driven, energy-tunable, and quasimonochromatic x-ray source based on Thomson scattering from laser-wakefield-accelerated electrons. One part of the 40TW laser beam was used to drive a few-fs bunch of quasimonoenergetic electrons, produced using the shock-front injection scheme, while the remainder was backscattered off the bunch at a weakly relativistic...
Mrs
Iryna Levchuk
(NSC Kharkov Institute of Physics & Technology, 61108 Kharkov, Ukraine)
9/14/15, 8:00โฏPM
WG4 - Application of compact and high-gradient accelerators/Advanced beam manipulation and control
poster
Focusing of relativistic electron bunches by wakefield, excited in the plasma, is important and interesting. The focusing of bunches by wakefield, excited in plasma by resonant train of relativistic electron bunches is inhomogeneous. Mechanism of focusing in the plasma, in which all bunches of train are focused identically and uniformly, is proposed and investigated by numerical simulation in....
