High-brightness beam tests of the very high frequency gun at the Advanced Photo-injector EXperiment test facility at the Lawrence Berkeley National Laboratory.

The very-high-frequency gun (VHF-Gun) is a new concept photo-injector developed and built at the Lawrence Berkeley National Laboratory (LBNL) for generating high-brightness electron beams capable of driving X-ray free electron lasers (FELs) at MHz-class repetition rates. The gun that purposely uses established and mature radiofrequency and mechanical technologies has demonstrated over the last many years the capability of reliably operating in continuous wave mode at the design accelerating fields and required vacuum and mechanical performance. The results of VHF-Gun technology demonstration were reported elsewhere [Sannibale et al., Phys. Rev. Spec. Top.-Accel. Beams 15, 103501 (2012)]; here in this paper, we provide and analyze examples of the experimental results of the first high-brightness beam tests performed at the Advanced Photo-injector EXperiment test facility at LBNL that demonstrated the gun capability of delivering the beam quality required for driving high repetition rate X-ray FELs.

• Publication year

  2019

• Venue

  Review of Scientific Instruments

• Publication date

  2019-03-01

• Fields of study

  Materials Science, Medicine, Physics, Engineering

• Identifiers
  DOI 10.1063/1.5088521PMID 30927765
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Temperature-dependent quantum efficiency degradation of K-Cs-Sb bialkali antimonide photocathodes grown by a triple-element codeposition method

  2017cited by this paper
• Upgrade possibilities for continuous wave rf electron guns based on room-temperature very high frequency technology

  2017cited by this paper
• Design of a high-flux instrument for ultrafast electron diffraction and microscopy

  2016cited by this paper
• Mechanical design and fabrication of the VHF-gun, the Berkeley normal-conducting continuous-wave high-brightness electron source.

  2016cited by this paper
• Dark current studies on a normal-conducting high-brightness very-high-frequency electron gun operating in continuous wave mode

  2015cited by this paper
• Cesium telluride cathodes for the next generation of high-average current high-brightness photoinjectors

  2015cited by this paper
• Emittance measurements and minimization at the SwissFEL Injector Test Facility

  2014cited by this paper
• Maximum current density and beam brightness achievable by laser-driven electron sources

  2014cited by this paper
• High-brightness high-duty cycle electron injectors

  2014cited by this paper
• Nuclear Instruments and Methods in Physics Research A

  2013cited by this paper
• Advanced photoinjector experiment photogun commissioning results

  2012cited by this paper
• A compact X-ray free-electron laser emitting in the sub-ångström region

  2012cited by this paper
• A low emittance and high efficiency visible light photocathode for high brightness accelerator-based X-ray light sources

  2011cited by this paper
• Schemes and challenges for electron injectors operating in high repetition rate X-ray FELs

  2011cited by this paper
• RF Design of the LCLS Gun

  2010influential reference
• First lasing and operation of an ångstrom-wavelength free-electron laser

  2010cited by this paper
• Deflecting cavity for beam diagnostics at Cornell ERL injector

  2010cited by this paper
• Design Studies for a VUV–Soft X-ray Free-Electron Laser Array

  2009cited by this paper
• Maximum achievable beam brightness from photoinjectors.

  2009cited by this paper
• A proposal for an X-ray free-electron laser oscillator with an energy-recovery linac.

  2008cited by this paper
• Toward Control of Matter: Basic Energy Science Needs for a New Class of X-Ray Light Sources

  2008cited by this paper
• Operation of a free-electron laser from the extreme ultraviolet to the water window

  2007cited by this paper
• Nuclear Instruments and Methods

  2003cited by this paper
• Nuclear Instruments and Methods in Physics Research A263 (1988) 441-445 North-Holland, Amsterdam PARTICLE IDENTIFICATION VIA PULSE-SHAPE DISCRIMINATION WITH A CHARGE-INTEGRATING ADC

  2002cited by this paper
• Multi-objective optimization using evolutionary algorithms

  2001cited by this paper
• First operation of cesium telluride photocathodes in the TTF injector RF gun

  2000cited by this paper
• Proceedings of the 1999 Particle Accelerator Conference

  1999cited by this paper
• Stimulated Emission of Bremsstrahlung in a Periodic Magnetic Field

  1971cited by this paper

• Characterization and correction of multipole field effect on electron beams from a high-brightness continuous-wave photocathode gun

  2025cites this paper
• Experimental demonstration of dark current mitigation by an over-inserted plug in a normal conducting very-high-frequency gun

  2025cites this paper
• Slice emittance measurements using a slit-grid system and a fast wall-current monitor.

  2024cites this paper
• Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun

  2024cites this paper
• The Linac Coherent Light Source II photoinjector laser infrastructure

  2023cites this paper
• High-brightness electron injectors for high-duty cycle X-ray free electron lasers

  2023cites this paper
• Overview of CW electron guns and LCLS-II RF gun performance

  2023cites this paper
• Design, fabrication, and beam commissioning of a 216.667 MHz continuous-wave photocathode very-high-frequency electron gun

  2023cites this paper
• Virtual-diagnostic-based time stamping for ultrafast electron diffraction

  2023cites this paper
• QE evolution of bialkali photocathode at cryogenic temperature

  2023cites this paper
• Ponderomotive bunching of a relativistic electron beam for a superradiant Thomson source

  2023cites this paper
• The LCLS-II Gun&Buncher LLRF Controller Upgrade

  2022cites this paper
• Slice energy spread measurement in the low energy photoinjector

  2022cites this paper
• Review of Recent Progress on Advanced Photocathodes for Superconducting RF Guns

  2022cites this paper
• Sub-micron normalized emittance measurement for a MeV continuous-wave electron gun

  2022cites this paper
• Isolated attosecond X-ray pulses from superradiant thomson scattering by a relativistic chirped electron mirror

  2022cites this paper
• The European ERL Roadmap

  2022cites this paper
• Nanometre-scale emittance beams from a continuous-wave RF gun

  2021cites this paper
• Successful user operation of a superconducting radio-frequency photoelectron gun with Mg cathodes

  2021cites this paper
• Inhibition of current-spike formation based on longitudinal phase space manipulation for high-repetition-rate X-ray FEL

  2021cites this paper
• Longitudinal phase space improvement of a continuous-wave photoinjector toward X-ray free-electron laser application

  2021cites this paper
• Development of a low-emittance high-current continuous electron source

  2021cites this paper
• Frequency-detuning dependent transient coaxial rf coupler kick in an L -band long-pulse high-gradient rf photogun

  2020cites this paper
• Beam Dynamics Studies of an APEX2-Based Photoinjector

  2019cites this paper
• Overview of CW RF Guns for Short Wavelength FELs

  2019cites this paper
• RF design of APEX 2 two-cell continuous-wave normal conducting photoelectron gun cavity based on multi-objective genetic algorithm

  2019cites this paper
• RF design of APEX2 two-cell continuous-wave normal conducting photoelectron gun cavity based on multi-objective genetic algorithm

  2019cites this paper
• RF Design of APEX2 Cavities

  2019cites this paper
• FIRST DESIGN STUDIES OF A NC CW RF GUN FOR EUROPEAN XFEL

  2019cites this paper