ZEU-PITZ

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2017-11-21
12:52
[PUBDB-2017-12192] Conference Presentation
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Laboratory astrophysics:Bell’s instability, a cosmic-ray driven magnetic field fluctuation
9. DESY Beschleuniger Ideenmarkt, Meeting locationHamburg, Germany, 10 Oct 2017 - 10 Oct 20172017-10-102017-10-10
With the progresses of experimental technologies, laboratory astrophysics has become an alternative method in astrophysics studies besides the classical observations and numerical simulations. Via the connection between astrophysics and laboratory experiments, laboratory astrophysics seeks to expand our understanding of physical processes by simulating the extreme astrophysical environments in the laboratory. [...]
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2017-11-21
12:42
[PUBDB-2017-12188] Conference Presentation
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Preparatory simulation studies for the laboratory experiment of cosmic-ray driven magnetic field fluctuations
Computational Plasma Physics Conference 2017, Meeting locationYork, UK, 20 Nov 2017 - 22 Nov 20172017-11-202017-11-22
For the source of PeV-scale high energy cosmic ray particles, the diffusive shock acceleration process at the forward shocks of supernova remnants is considered as the principal mechanism. For efficient acceleration, a nonresonant instability driven by cosmic ray current is suggested as a candidate for providing the required magnetic turbulence in the upstream region of the shock [1]. [...]
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2017-11-08
16:33
OpenAccess [PUBDB-2017-11784] Poster
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Simulation study for the laboratory experiment of Bell’s instability
The 10th International Conference on Inertial Fusion Sciences and Applications , IFSA2017, Meeting locationSaint Malo, France, 11 Sep 2017 - 15 Sep 20172017-09-112017-09-15  GO
The diffusive shock acceleration at the forward shocks of shell-type supernova remnants is believed as a prime process to generate high energy cosmic ray particles. For efficient acceleration, Bell’s instability, driven by streaming cosmic rays, is proposed as a candidate for providing the required magnetic turbulence in the upstream region of the shock [1]. [...]
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2017-11-08
15:18
[PUBDB-2017-11782] Poster
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Bell’s instability in the laboratory: pre-experiment simulation study
XXXIII International Conference on Phenomena in Ionized Gases, ICPIG 2017, Meeting locationEstoril, DESY, Portugal, 9 Jul 2017 - 14 Jul 20172017-07-092017-07-14
The diffusive shock acceleration 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. [...]

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2017-09-06
10:47
[PUBDB-2017-10409] Contribution to a conference proceedings
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Experimental Investigation of High Transformer Ratio Plasma Wakefield Acceleration at PITZ
8th International Particle Accelerator Conference, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 JACoW, Geneva, Switzerland, 1718-1720 (2017) [10.18429/JACoW-IPAC2017-TUPIK018]  GO
Plasma wakefield acceleration (PWFA), the acceleration of particles in a plasma wakefield driven by high current-density particle bunches, is one of the most promising candidates for a future compact accelerator technology. A key aspect of this type of acceleration is the ratio between the accelerating fields experienced by a witness beam and the decelerating fields experienced by the drive beam, called the transformer ratio. [...]
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2017-09-06
10:27
[PUBDB-2017-10405] Contribution to a conference proceedings
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Experimental Demonstration of Ballistic Bunching with Dielectric-Lined Waveguides at Pitz
8th International Particle Accelerator Conference, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 JACoW, Geneva, Switzerland, 2857-2860 (2017) [10.18429/JACoW-IPAC2017-WEPAB122]  GO
We report on the experimental demonstration of ballistic bunching of photoinjected, nC-scale electron bunches at the PITZ facility. In the experiment, electron bunches emanating from the photocathode were directly focused into a mm-scale dielectric-lined waveguide. [...]
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2017-09-06
10:16
[PUBDB-2017-10403] Contribution to a book
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High Brightness Photo Injectors for Brilliant Light Sources
Synchrotron Light Sources and Free-Electron Lasers / Jaeschke, Eberhard J. (Editor) ; Cham : Springer International Publishing, 2016, Chapter 15 ; ISBN: 978-3-319-14393-4 ; doi:10.1007/978-3-319-14394-1 Cham : Springer International Publishing, 561-604 (2016) [10.1007/978-3-319-14394-1_15]  GO
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2017-09-06
09:53
[PUBDB-2017-10399] Journal Article
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Design of an L-band normally conducting RF gun cavity for high peak and average RF power
ddc:530
To provide high quality electron bunches for linear accelerators used in free electron lasers and particle colliders, RF gun cavities operate with extreme electric fields, resulting in a high pulsed RF power. The main L-band superconducting linacs of such facilities also require a long RF pulse length, resulting in a high average dissipated RF power in the gun cavity. [...]
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2017-08-01
12:09
OpenAccess [PUBDB-2017-08791] Contribution to a conference proceedings
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Fast Automatic Ramping of High Average Power Guns
8th International Particle Accelerator Conference, IPAC 17, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 JACoW, Geneva, Switzerland, 1809-1811 (2017) [10.18429/JACoW-IPAC2017-TUPIK052]  GO
The electron guns at PITZ, FLASH and European XFEL are standing wave structures which operate at high average power (>40 kW) to produce long trains of high quality beams. This amount of power heats the cavity surface enough to change signicantly the gun resonance frequency. [...]
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2017-05-30
13:29
OpenAccess [PUBDB-2017-03953] Report/Journal Article
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Chirp Mitigation of Plasma-Accelerated Beams by a Modulated Plasma Density
[arXiv:1603.08489] ddc:550
Plasma-based accelerators offer the possibility to drive future compact light sources and high-energy physics applications. Achieving good beam quality, especially a small beam energy spread, is still one of the major challenges. [...]
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