Longitudinal emittance measurements at the SLAC gun test facility

Dowell, D.H.; Bolton, Paul R.; Clendenin, J. E.; Gierman, S.M.; Limborg, C.; Murphy, Brendan; Schmerge, John; Shaftan, T.

doi:10.1016/s0168-9002(03)00940-9

Cited by 18 publications

(16 citation statements)

References 3 publications

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“…9, and is due to timecorrelated energy spread. The uncorrelated energy spread is determined to be less than 6 keV (at 150 pC), similar to that measured in the GTF [9,10] and FLASH at DESY [11], although at a lower charge.…”

Section: The Photocathode Rf Gunsupporting

confidence: 72%

Commissioning the Linac Coherent Light Source injector

Akre¹,

Dowell²,

Emma³

et al. 2008

Phys. Rev. ST Accel. Beams

222

146

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The Linac Coherent Light Source is a SASE x-ray free-electron laser (FEL) project presently under construction at SLAC [J. Arthur et al., SLAC-R-593, 2002.]. The injector section, from drive laser and rf photocathode gun through first bunch compressor chicane, was installed in the fall of 2006. The initial system commissioning with an electron beam was completed in August of 2007, with the goal of a 1.2-micron emittance in a 1-nC bunch demonstrated. The second phase of commissioning, including second bunch compressor and full linac, is planned for 2008, with FEL commissioning in 2009. We report experimental results and experience gained in the first phase of commissioning, including the photocathode drive laser, rf gun, photocathode, S-band and X-band rf systems, first bunch compressor, and the various beam diagnostics.

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Section: The Photocathode Rf Gunsupporting

confidence: 72%

Commissioning the Linac Coherent Light Source injector

Akre¹,

Dowell²,

Emma³

et al. 2008

Phys. Rev. ST Accel. Beams

222

146

View full text Add to dashboard Cite

show abstract

“…The purpose of the analysis is to identify the longitudinal/transverse beam matrix at the exit of the linac. It is noted that these are not the same as those at the gun exit, because of continued evolution of the bunch as it drifts from the gun to the linac [13,16].…”

Section: -Beam Matrix Identification Using Punda Modelsmentioning

confidence: 95%

“…Free Electron Laser (FEL) applications have been the primary driving force behind this requirement. To achieve the desired beam quality, there have been systematic studies of both the transverse and longitudinal beam properties from the RF photocathode gun at SLAC Gun Test Facility (GTF) [13,14]. One main objective of these studies has been to identify the factors affecting beam quality and to establish systematic methodologies for minimizing beam emittance.…”

Section: -Beam Matrix Identification Using Punda Modelsmentioning

confidence: 99%

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Development of PUNDA (Parametric Universal Nonlinear Dynamics Approximator) Models for Self-Validating Knowledge-Guided Modelling of Nonlinear Processes in Particle Accelerators \& Industry

Sayyarrodsari¹,

Schweiger²,

Hartman³

2007

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“…Many experiments have so far characterized the uncorrelated energy spread [36][37][38][39] but its evaluation is typically limited by the resolution of the diagnostics device or by perturbations to the measurement given, for example, by the space charge force in the gun region.…”

Section: Uncorrelated Energy Spreadmentioning

confidence: 99%

Conceptual and Technical Design Aspects of Accelerators for External Injection in LWFA

et al. 2018

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Laser driven Wake-Field Acceleration (LWFA) has proven its capability of accelerating electron bunches (e-bunches) to up to 4 GeV energy in a single stage while reaching gradients up to hundreds of GV/m. Because of the short period of the accelerating field (typically ranging from 100 fs to 1 ps duration) and the requirement of extremely small beam size (typically smaller than 1 µm) to match the channel, e-bunches can reach extremely high densities. They can be either extracted directly from the plasma or externally injected. The study of the external injection is interesting for two main reasons. On the one hand this method allows better control of the quality of the input beam and on the other hand it is in general necessary when a staged approach of the accelerator is considered. The interest in producing, characterizing and transporting high brightness ultra-short e-bunches has grown together with the interest in LWFA and other novel high-gradient acceleration techniques. In this paper we will review the principal techniques for producing and shaping ultra-short electron bunches with the example of the SINBAD-ARES (Accelerator Research Experiment at SINBAD) linac at the Deutsches Elektronen-Synchrotron (DESY). Our goal is to show how the design of the SINBAD-ARES linac satisfies the requirements for generating high brightness LWFA probes. In the last part of the paper we shall also comment on the technical challenges for electron control and characterization.

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Longitudinal emittance measurements at the SLAC gun test facility

Cited by 18 publications

References 3 publications

Commissioning the Linac Coherent Light Source injector

Commissioning the Linac Coherent Light Source injector

Development of PUNDA (Parametric Universal Nonlinear Dynamics Approximator) Models for Self-Validating Knowledge-Guided Modelling of Nonlinear Processes in Particle Accelerators \& Industry

Conceptual and Technical Design Aspects of Accelerators for External Injection in LWFA

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