IBIC2016 - List of Keywords (plasma)

Paper	Title	Other Keywords	Page
MOPG35	Single Pulse Sub-Picocoulomb Charge Measured by a Turbo-ICT in a Laser Plasma Accelerator	background, laser, target, electron	119
	F. Stulle, J.F. Bergoz BERGOZ Instrumentation, Saint Genis Pouilly, France W. Leemans, K. Nakamura LBNL, Berkeley, California, USA
	Funding: The work by the BELLA Center scientists and staff was supported by Office of Science, Office of HEP, US DOE under Contract DE-AC02-05CH11231 and the National Science Foundation. Experiments at the Berkeley Lab Laser Accelerator (BELLA) verified that the Turbo-ICT allows high resolution charge measurements even in the presence of strong background signals. For comparison, a Turbo-ICT and a conventional ICT were installed on the BELLA petawatt beamline, both sharing the same vacuum flanges. We report on measurements performed using a gas-jet and a capillary-discharge based laser plasma accelerator. In both setups the Turbo-ICT was able to resolve sub-picocoulomb charges.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG35
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TUBL04	Electro-Optical Methods for Multipurpose Diagnostics	laser, electron, acceleration, target	290
	R. Pompili, M.P. Anania, M. Bellaveglia, F.G. Bisesto, E. Chiadroni, A. Curcio, D. Di Giovenale, G. Di Pirro, M. Ferrario INFN/LNF, Frascati (Roma), Italy A. Cianchi INFN-Roma II, Roma, Italy A. Zigler The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem, Israel
	Electro-optic sampling (EOS) based temporal diagnostics allows to precisely measure the temporal profile of electron bunches with resolution of about 50 fs in a non-destructive and single-shot way. At SPARC_LAB we adopted the EOS in very different experimental fields. We measured for the first time the longitudinal profile of a train of multiple bunches at THz repetition rate, as the one required for resonant Plasma Wakefield Acceleration (PWFA) in a single-shot and non-intercepting way. By means of the EOS we demonstrated a new hybrid compression scheme that is able to provide ultra-short bunches (<90 fs) with ultra-low (<20 fs) timing-jitter relative to the EOS laser system. Furthermore, we recently developed an EOS system in order to provide temporal and energy measurements in a very noisy and harsh environment: electron beams ejected by the interaction of high-intensity (hundreds TW class) ultra-short (35fs) laser pulses with solid targets by means of the so-called Target Normal Sheath Acceleration (TNSA) method.
	Slides TUBL04 [2.183 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUBL04
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TUPG62	X-Ray Smith-Purcell Radiation for Non-Invasive Submicron Diagnostics of Electron Beams Having TeV Energy	radiation, target, diagnostics, electron	494
	A.A. Tishchenko, D.Yu. Sergeeva MEPhI, Moscow, Russia
	We present the general theory of X-ray Smith-Purcell radiation from ultrarelativistic beams proceeding from our earlier results. The theory covers also the case of oblique incidence of the beam to the target, which leads to the conical effect in spatial distribution of Smith-Purcell radiation and allows one to count the divergence of the beam; also, the analytical description of the incoherent form-factor of the beam is given.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG62
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WECL01	Longitudinal Phase Space Diagnostics for Ultrashort Bunches With a Plasma Deflector	laser, electron, wakefield, injection	597
	I. Dornmair, A.R. Maier CFEL, Hamburg, Germany I. Dornmair University of Hamburg, Hamburg, Germany K. Flöttmann, B. Marchetti DESY, Hamburg, Germany A.R. Maier University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany C.B. Schroeder LBNL, Berkeley, California, USA
	We present with simulations a new method to diagnose the longitudinal phase space of ultrashort electron bunches. It harnesses the strong transverse fields of laser-driven wakefields to streak an electron bunch that is injected off-axis with respect to the driver laser. Owed to the short plasma wavelength and the high field amplitude present in a plasma wakefield, a temporal resolution around or below the femtosecond can be achieved with a plasma length of a few millimeters. We will explore the limitations on the time resolution, the calibration, and the influence of error sources such as beam loading and jitters. Amongst the possible applications are experiments aiming at external injection into laser-driven wakefields, or the diagnostics of laser-plasma accelerated beams.
	Slides WECL01 [5.430 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WECL01
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WEPG51	A Transverse Deflecting Structure for the Plasma Wakefield Accelerator Experiment, FLASHForward	emittance, optics, cavity, quadrupole	759
	R.T.P. D'Arcy, V. Libov, J. Osterhoff DESY, Hamburg, Germany
	The FLASHForward project at DESY is an innovative plasma-wakefield acceleration experiment, aiming to accelerate electron beams to GeV energies over a few centimeters of ionized gas. These accelerated beams must be of sufficient quality to be used in a free-electron laser; achievable only through rigorous analysis of both the drive- and accelerated-beam's longitudinal phase space. The pulse duration of these accelerated beams is typically in the few femtosecond range, and thus difficult to resolve with traditional diagnostic methods. In order to longitudinally resolve these very short bunch-lengths, it is necessary to utilize the properties of a transverse RF deflector (operating in the hybrid electromagnetic mode, HEM11), which provides a relation between longitudinal and transverse co-ordinates. It is proposed that this type of device, commonly known as a Transverse Deflecting Structure (TDS) due to its 'streaking' in the transverse plane, will be introduced to the FLASHForward beamline in order to perform these single-shot longitudinal phase space measurements. The initial investigations into the realization of this diagnostic tool are outlined.
	Poster WEPG51 [10.726 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG51
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WEPG61	Theory of X-Ray Transition Radiation from Graphene for Transition Radiation Detectors	radiation, electron, detector, target	788
	A.A. Tishchenko, A. Romaniouk, D.Yu. Sergeeva, M.N. Strikhanov MEPhI, Moscow, Russia
	We present the theory of transition radiation for monolayers in X-ray domain from the first principles and consider the pros and cons of using graphene-monolayer in transition radiation detectors.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG61
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Paper

Title

Other Keywords

Page

MOPG35

Single Pulse Sub-Picocoulomb Charge Measured by a Turbo-ICT in a Laser Plasma Accelerator

background, laser, target, electron

119

F. Stulle, J.F. Bergoz
BERGOZ Instrumentation, Saint Genis Pouilly, France
W. Leemans, K. Nakamura
LBNL, Berkeley, California, USA

Funding: The work by the BELLA Center scientists and staff was supported by Office of Science, Office of HEP, US DOE under Contract DE-AC02-05CH11231 and the National Science Foundation.
Experiments at the Berkeley Lab Laser Accelerator (BELLA) verified that the Turbo-ICT allows high resolution charge measurements even in the presence of strong background signals. For comparison, a Turbo-ICT and a conventional ICT were installed on the BELLA petawatt beamline, both sharing the same vacuum flanges. We report on measurements performed using a gas-jet and a capillary-discharge based laser plasma accelerator. In both setups the Turbo-ICT was able to resolve sub-picocoulomb charges.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG35

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUBL04

Electro-Optical Methods for Multipurpose Diagnostics

laser, electron, acceleration, target

290

R. Pompili, M.P. Anania, M. Bellaveglia, F.G. Bisesto, E. Chiadroni, A. Curcio, D. Di Giovenale, G. Di Pirro, M. Ferrario
INFN/LNF, Frascati (Roma), Italy
A. Cianchi
INFN-Roma II, Roma, Italy
A. Zigler
The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem, Israel

Electro-optic sampling (EOS) based temporal diagnostics allows to precisely measure the temporal profile of electron bunches with resolution of about 50 fs in a non-destructive and single-shot way. At SPARC_LAB we adopted the EOS in very different experimental fields. We measured for the first time the longitudinal profile of a train of multiple bunches at THz repetition rate, as the one required for resonant Plasma Wakefield Acceleration (PWFA) in a single-shot and non-intercepting way. By means of the EOS we demonstrated a new hybrid compression scheme that is able to provide ultra-short bunches (<90 fs) with ultra-low (<20 fs) timing-jitter relative to the EOS laser system. Furthermore, we recently developed an EOS system in order to provide temporal and energy measurements in a very noisy and harsh environment: electron beams ejected by the interaction of high-intensity (hundreds TW class) ultra-short (35fs) laser pulses with solid targets by means of the so-called Target Normal Sheath Acceleration (TNSA) method.

Slides TUBL04 [2.183 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUBL04

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPG62

X-Ray Smith-Purcell Radiation for Non-Invasive Submicron Diagnostics of Electron Beams Having TeV Energy

radiation, target, diagnostics, electron

494

A.A. Tishchenko, D.Yu. Sergeeva
MEPhI, Moscow, Russia

We present the general theory of X-ray Smith-Purcell radiation from ultrarelativistic beams proceeding from our earlier results. The theory covers also the case of oblique incidence of the beam to the target, which leads to the conical effect in spatial distribution of Smith-Purcell radiation and allows one to count the divergence of the beam; also, the analytical description of the incoherent form-factor of the beam is given.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG62

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WECL01

Longitudinal Phase Space Diagnostics for Ultrashort Bunches With a Plasma Deflector

laser, electron, wakefield, injection

597

I. Dornmair, A.R. Maier
CFEL, Hamburg, Germany
I. Dornmair
University of Hamburg, Hamburg, Germany
K. Flöttmann, B. Marchetti
DESY, Hamburg, Germany
A.R. Maier
University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
C.B. Schroeder
LBNL, Berkeley, California, USA

We present with simulations a new method to diagnose the longitudinal phase space of ultrashort electron bunches. It harnesses the strong transverse fields of laser-driven wakefields to streak an electron bunch that is injected off-axis with respect to the driver laser. Owed to the short plasma wavelength and the high field amplitude present in a plasma wakefield, a temporal resolution around or below the femtosecond can be achieved with a plasma length of a few millimeters. We will explore the limitations on the time resolution, the calibration, and the influence of error sources such as beam loading and jitters. Amongst the possible applications are experiments aiming at external injection into laser-driven wakefields, or the diagnostics of laser-plasma accelerated beams.

Slides WECL01 [5.430 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WECL01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPG51

A Transverse Deflecting Structure for the Plasma Wakefield Accelerator Experiment, FLASHForward

emittance, optics, cavity, quadrupole

759

R.T.P. D'Arcy, V. Libov, J. Osterhoff
DESY, Hamburg, Germany

The FLASHForward project at DESY is an innovative plasma-wakefield acceleration experiment, aiming to accelerate electron beams to GeV energies over a few centimeters of ionized gas. These accelerated beams must be of sufficient quality to be used in a free-electron laser; achievable only through rigorous analysis of both the drive- and accelerated-beam's longitudinal phase space. The pulse duration of these accelerated beams is typically in the few femtosecond range, and thus difficult to resolve with traditional diagnostic methods. In order to longitudinally resolve these very short bunch-lengths, it is necessary to utilize the properties of a transverse RF deflector (operating in the hybrid electromagnetic mode, HEM11), which provides a relation between longitudinal and transverse co-ordinates. It is proposed that this type of device, commonly known as a Transverse Deflecting Structure (TDS) due to its 'streaking' in the transverse plane, will be introduced to the FLASHForward beamline in order to perform these single-shot longitudinal phase space measurements. The initial investigations into the realization of this diagnostic tool are outlined.

Poster WEPG51 [10.726 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG51

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPG61

Theory of X-Ray Transition Radiation from Graphene for Transition Radiation Detectors

radiation, electron, detector, target

788

A.A. Tishchenko, A. Romaniouk, D.Yu. Sergeeva, M.N. Strikhanov
MEPhI, Moscow, Russia

We present the theory of transition radiation for monolayers in X-ray domain from the first principles and consider the pros and cons of using graphene-monolayer in transition radiation detectors.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG61

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)