1st European Advanced Accelerator Concepts Workshop

Session

WG5 - instrum - Plasma sources and instrumentation

05

4 Jun 2013, 16:00

La Biodola, Isola d'Elba

Conveners

WG5 - instrum - Plasma sources and instrumentation

• Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY)
• Alessandro Cianchi (ROMA2;LNF)

WG5 - instrum - Plasma sources and instrumentation

• Alessandro Cianchi (ROMA2;LNF)
• Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY)

WG5 - instrum - Plasma sources and instrumentation

• Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY)
• Alessandro Cianchi (ROMA2;LNF)

WG5 - instrum - Plasma sources and instrumentation

• Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY)
• Alessandro Cianchi (ROMA2;LNF)

9. TADPOLE for longitudinal electron-bunch diagnostics based on electro-optic upconversion

Mr Jan-Patrick Schwinkendorf (Deutsches Elektronen-Synchrotron)

04/06/2013, 16:00

WG5 instrum - Plasma sources and instrumentation

talk

Electron-bunch diagnostics are desired to utilize unambiguous, non-destructive, single-shot techniques. Various methods fulfill the latter two demands, but feature significant ambiguities and constraints in the reconstruction of time-domain electron-bunch profiles, as for example uncertainties due to the phase retrieval of coherent radiation using the Kramers-Kronig relation. We present a...

23. First single-shot and non-intercepting longitudinal bunch diagnostics for comb-like beam by means of Electro-Optic Sampling

Riccardo Pompili (LNF)

04/06/2013, 16:20

WG5 instrum - Plasma sources and instrumentation

talk

Precise measurements of the temporal profile of ultrashort electron bunches are of great interest for the optimization and operation of plasma wakefield accelerators (PWFAs). Electro Optical Sampling (EOS) based technique have been already demonstrated the possibility to successfully measure the longitudinal properties of electron beams. The electric field of a travelling electron bunch...

80. Single shot longitudinal profile monitors using Smith-Purcell radiation

Mr Nicolas Delerue (LAL, CNRS and Université Paris-Sud 11)

04/06/2013, 16:40

WG5 instrum - Plasma sources and instrumentation

talk

Smith-Purcell radiation has the potential of providing information on the longitudinal profile of an electron bunch. Research is ongoing both at FACET and at SOLEIL to study how this radiation could be used to build a single shot longitudinal profile monitor. A brief status of these two experiments will be presented, including recent experimental results showing how a change in bunch length...

81. Experimental Measurements of Electron-Bunch Trains in a Laser-Plasma Accelerator

Dr Olle Lundh (Lund University)

04/06/2013, 17:00

WG5 instrum - Plasma sources and instrumentation

talk

Spectral measurements of visible coherent transition radiation produced by a laser-plasma-accelerated electron beam are reported. The significant periodic modulations that are observed in the spectrum result from the interference of transition radiation produced by multiple bunches of electrons. A Fourier analysis of the spectral interference fringes reveals that electrons are injected and...

94. THz diagnostics for the plasma density and charged particle self-modulation measurement in AWAKE experiments

Dr roxana tarkeshian (Postdoc)

04/06/2013, 18:00

WG5 instrum - Plasma sources and instrumentation

talk

Plasma wakefield acceleration (PWFA) experiments using CERN SPS proton bunches are now under development within the AWAKE-collaboration. A density uniformity on the order of 0.2% is required to maintain the witness electrons on the accelerating and focusing phase of the wakefields. Fast and precise methods for single shot plasma density measurements with time windows of about 100ns are...

49. Pickup design for arrival-time measurements at REGAE

Mr Aleksandar Angelovski (TU Darmstadt)

04/06/2013, 18:25

WG5 instrum - Plasma sources and instrumentation

talk

Laser wakefield accelerators are capable of accelerating electron bunches to energies on the GeV scale over acceleration distances of only a few cm. However, the beam quality still can be improved especially in terms of energy spread and emittance. In order to gain more insight into the acceleration process, the high-quality electron bunches produced by the conventional...

21. Issues with phase space characterization of laser-plasma generated electron beams

Alessandro Cianchi (ROMA2;LNF)

05/06/2013, 16:00

WG5 instrum - Plasma sources and instrumentation

talk

Plasma acceleration is the new frontier in particle beam accelerators. Using the strong electric fields inside a plasma it is possible to achieve accelerating gradients orders of magnitude larger with respect to the actual technologies. Different schemes, using completely different approaches, have been proposed and several already tested, producing beams of energy up to several GeV....

56. High resolution laserwire electron beam size measurements and fibre laser development for high repetition rate laserwire applications

Dr L. Corner (John Adams Institute, University of Oxford, UK)

05/06/2013, 16:25

WG5 instrum - Plasma sources and instrumentation

talk

A laserwire is a non-invasive, high resolution particle beam size monitor based on Compton scattering that is required for future planned colliders and can also be used to estimate the size of the source in wakefield acceleration experiments. We present recent results from the high resolution laserwire transverse electron beam diagnostic installed at the Accelerator Test Facility 2 (ATF2)...

12. Optical probing of laser-driven electron acceleration with synchronized few cycle pulses

Alexander Sävert (Friedrich Schiller University of Jena, Helmholtz Institute Jena)

05/06/2013, 18:00

WG5 instrum - Plasma sources and instrumentation

talk

Experiments on laser wake field acceleration rely heavily on numerical simulations to explain observed phenomena. This is mainly attributed to the unique properties of the acceleration structure, the plasma wave: The spatial extension in the order of a few micrometers and its propagation with nearly the speed of light have so far defied a direct observation. Even pulses with durations as short...

63. 3D reconstruction of electron trajectories in a LWFA using spectrally and spatially resolved Betatron radiation

Dr Felicie Albert (Lawrence Livermore National Laboratory)

05/06/2013, 18:25

WG5 instrum - Plasma sources and instrumentation

talk

Experiments performed using the 200 TW Callisto laser system at LLNL to produce GeV-class electron beams and keV Betatron x-rays are reported. The laser was focused into various gas cells with sizes ranging from 3 to 10 mm that contained a mixure of gases (He, N, Ar). We demonstrate that it is possible to reconstruct tomographycally electron trajectories inside the channel of the...

72. High sensitivity gas-density profilometry for laser- and beam-driven plasma acceleration experiments

Dr Lucas Schaper (University Hamburg / DESY)

05/06/2013, 18:50

WG5 instrum - Plasma sources and instrumentation

talk

Precise tailoring of plasma-density profiles in longitudinal and transverse direction has been identified to be one of the critical points in achieving stable and reproducible conditions in plasma wakefield accelerators. Here the especially strict requirements of next generation plasma-wakefield concepts, such as hybrid-accelerators, with densities around 10^17 cm-3 pose challenges to target...