FLASHForward: plasma wakefield accelerator science for high-average-power applications

D’Arcy, Richard; Aschikhin, Alexander; Bohlen, Simon; Boyle, G.; Brümmer, Theresa; Chappell, J.; Diederichs, Severin; Foster, B.; Garland, Matthew; Goldberg, Lars; González, Pedro; Karstensen, S.; Knetsch, A.; Kuang, Peng; Libov, V.; Ludwig, Kai; Ossa, A. Martínez de la; Marutzky, Frank; Meisel, Martin; Mehrling, Timon; Niknejadi, Pardis; Põder, Kristjan; Pourmoussavi, P.; Quast, Martin; Röckemann, J.-H.; Schaper, L.; Schmidt, B.; Schröder, S.; Schwinkendorf, Jan-Patrick; Sheeran, Bridget; Tauscher, Gabriele; Wesch, S.; Wing, M.; Winkler, Paul; Zeng, Ming; Osterhoff, Jens

doi:10.1098/rsta.2018.0392

Cited by 33 publications

(22 citation statements)

References 46 publications

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“…Experimental setup. This wakefield sampling measurement technique was implemented and experimentally demonstrated at the FLASHForward plasma accelerator facility 25 at DESY. Highquality electron bunches were generated with a photocathode at a repetition rate of 10 Hz and accelerated to 1.1 GeV using superconducting RF cavities in the FLASH linac 26 .…”

Section: Resultsmentioning

confidence: 99%

High-resolution sampling of beam-driven plasma wakefields

et al. 2020

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Plasma-wakefield accelerators driven by intense particle beams promise to significantly reduce the size of future high-energy facilities. Such applications require particle beams with a well-controlled energy spectrum, which necessitates detailed tailoring of the plasma wakefield. Precise measurements of the effective wakefield structure are therefore essential for optimising the acceleration process. Here we propose and demonstrate such a measurement technique that enables femtosecond-level (15 fs) sampling of longitudinal electric fields of order gigavolts-per-meter (0.8 GV m−1). This method—based on energy collimation of the incoming bunch—made it possible to investigate the effect of beam and plasma parameters on the beam-loaded longitudinally integrated plasma wakefield, showing good agreement with particle-in-cell simulations. These results open the door to high-quality operation of future plasma accelerators through precise control of the acceleration process.

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Section: Resultsmentioning

confidence: 99%

High-resolution sampling of beam-driven plasma wakefields

et al. 2020

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“…FLASHForward beamline. The FLASHForward experimental facility 35 is a test bed for PWFA research 36 .…”

Section: Resultsmentioning

confidence: 99%

Experimental demonstration of novel beam characterization using a polarizable X-band transverse deflection structure

Marchetti

Craievich

Aßmann

et al. 2021

Sci Rep

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The PolariX TDS (Polarizable X-Band Transverse Deflection Structure) is an innovative TDS-design operating in the X-band frequency-range. The design gives full control of the streaking plane, which can be tuned in order to characterize the projections of the beam distribution onto arbitrary transverse axes. This novel feature opens up new opportunities for detailed characterization of the electron beam. In this paper we present first measurements of the Polarix TDS at the FLASHForward beamline at DESY, including three-dimensional reconstruction of the charge-density distribution of the bunch and slice emittance measurements in both transverse directions. The experimental results open the path toward novel and more extensive beam characterization in the direction of multi-dimensional-beam-phase-space reconstruction.

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“…The FLASHForward experimental facility [ 52 ] is a high-performance test-bed for precision plasma-wakefield research housed at the FLASH FEL complex [ 53 ] , aiming to accelerate high-quality electron beams to gigaelectronvolts-levels in a few centimeters of ionized gas. The electrons to be accelerated will either be injected internally from the plasma background via density-downramp injection or externally from the FLASH superconducting RF front end.…”

Section: Desy Flashforwardmentioning

confidence: 99%

Free electron lasers driven by plasma accelerators: status and near-term prospects

Emma

Tilborg

Aßmann

et al. 2021

High Pow Laser Sci Eng

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Owing to their ultra-high accelerating gradients, combined with injection inside micrometer-scale accelerating wakefield buckets, plasma-based accelerators hold great potential to drive a new generation of free-electron lasers (FELs). Indeed, the first demonstration of plasma-driven FEL gain was reported recently, representing a major milestone for the field. Several groups around the world are pursuing these novel light sources, with methodology varying in the use of wakefield driver (laser-driven or beam-driven), plasma structure, phase-space manipulation, beamline design, and undulator technology, among others. This paper presents our best attempt to provide a comprehensive overview of the global community efforts towards plasma-based FEL research and development.

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FLASHForward: plasma wakefield accelerator science for high-average-power applications

Cited by 33 publications

References 46 publications

High-resolution sampling of beam-driven plasma wakefields

High-resolution sampling of beam-driven plasma wakefields

Experimental demonstration of novel beam characterization using a polarizable X-band transverse deflection structure

Free electron lasers driven by plasma accelerators: status and near-term prospects

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