| 1. |
- Curbis, F, et al.
(författare)
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HIGHLIGHTS FROM THE CONCEPTUAL DESIGN REPORT OF THE SOFT X-RAY LASER AT MAX IV
- 2021
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Ingår i: Proceedings of IPAC2021.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The SXL (Soft X-ray Laser) project developed a conceptual design for a soft X-ray Free Electron Laser (FEL) in the 1-5 nm wavelength range, driven by the existing MAX IV 3 GeV linac. In this contribution we will focus on the FEL operation modes developed for the first phase of the project based on two different linac modes. The design work was supported by the Knut and Alice Wallenberg foundation and by several Swedish universities and organizations (
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| 2. |
- Andersen, J., et al.
(författare)
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The soft X-ray laser project at MAX IV
- 2017
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Ingår i: IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference. - : Joint Accelerator Conferences Website - JACoW. - 9783954501823 ; , s. 2760-2762
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Konferensbidrag (refereegranskat)abstract
- A Soft X-ray Laser (SXL) beamline utilising FEL technology is being designed for the Short Pulse Facility (SPF) at the MAX IV Laboratory. A conceptual design study has been started following on the scientific case already prepared in collaboration between several Swedish Universities and driven by a strong (Swedish) user demand. The baseline goal of the SXL beamline is to generate intense and short pulses in the range 1-5 nm (0.2-1 keV). The system is building on the MAX IV linac system, already today providing 100 fs 3 GeV and pulses compressed to 100 fs for other applications within the SPF. As a special feature we foresee a variety of pump-probe capabilities.
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| 3. |
- Andersson, J., et al.
(författare)
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Beam performance of the photocathode gun for the MAX IV LINAC
- 2014
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Ingår i: Proceedings of the 36th International Free Electron Laser Conference, FEL 2014. - 9783954501335 ; , s. 799-802
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Konferensbidrag (refereegranskat)abstract
- The MAX IV facility in Lund (Sweden) is under construction and conditioning of the electron guns for the injector is ongoing. There are two guns in the injector, one thermionic gun for storage ring injection and one photocathode gun for the Short Pulse Facility. In this paper we report on the beam performance tests of the photocathode gun. The measurements were performed at the MAX IV electron gun test stand [1] during spring 2014. Parameters that were studied includes quantum efficiency, emittance and emittance compensation. Results from the measurements are also compared to particle simulations done with ASTRA.
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| 4. |
- Andersson, J, et al.
(författare)
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Emittance improvements in the MAX IV photocathode injector
- 2017
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Ingår i: IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference. - 9783954501823 - 9783954501823 ; , s. 1533-1536
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The MAX IV injector design predicts a beam with 100 pC of charge and an emittance lower than 1 mm mrad. The photocathode pre-injector is based on the now close to standard 1.6-cell gun adapted to 2.9985 GHz, in combination with a Ti:Sapphire laser system. This system reaches the requirements of the injector operation for the SPF, but can be tuned beyond specifications to open up new operation modes. During 2016 and 2017 several aspects where investigated to improve the emittance from the current gun, the goal was to meet the SPF specifications. In this paper we report on the progress, discuss the steps taken leading to a final emittance of 1 mm mrad and beyond.
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| 5. |
- Andersson, J, et al.
(författare)
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The New MAX IV Gun Test Stand
- 2017
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Ingår i: IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference. - 9783954501823 - 9783954501823 ; , s. 1537-1540
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The gun test stand from MAX-Lab has been upgraded and moved to a new facility at the MAX IV Laboratory. The new test stand will reuse parts of the equipment from the old test stand but a number of improvements to the setup are be made. In this paper we report on the design of the new gun test stand, research plans in the near future as well as planned and possible future research topics..
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| 6. |
- Curbis, F., et al.
(författare)
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Status of the soft X-ray laser (SXL) project at the Max IV laboratory
- 2019
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Ingår i: Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019. - : JACoW Publishing. - 9783954502103 ; , s. 749-752
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Konferensbidrag (refereegranskat)abstract
- A Soft X-ray Laser project (the SXL) aiming to produce FEL radiation in the range of 1 to 5 nm is currently in a conceptual design phase and a report on the design is expected to be delivered by March 2021. The FEL will be driven by the existing 3 GeV linac at MAX IV laboratory, which also serves as injector for the two storage rings. The science case has been pushed by a large group of mainly Swedish users and consists of experiments ranging from AMO physics to condensed matter, chemistry and imaging in life science. In this contribution, we will present the current conceptual design of the accelerator and the FEL operation modes together with a general overview of the beamline and experimental station. In particular design options for the FEL will be discussed in conjunction with the features of the electron beam from the MAX IV linac and the connection with the proposed experiments.
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| 7. |
- Kotur, M, et al.
(författare)
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PHOTOCATHODE LASER PULSE SHAPING FOR IMPROVED EMITTANCE
- 2018
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Ingår i: Proceedings of the 29th Linear Accelerator Conference, LINAC 2018. - 9783954501946 ; , s. 84-86
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Konferensbidrag (refereegranskat)abstract
- We present a setup for producing and characterizing picosecond ultraviolet laser pulses for use in the MAX IV photocathode electron gun preinjector. Frequency-tripled laser pulses from a commercial laser system are shaped directly in the ultraviolet domain using a Fourier-domain pulse shaper. The pulses were characterized using a transient grating FROG. We discuss a proposed upgrade of the pulse shaper, as well as its limitations.
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| 8. |
- Kotur, M, et al.
(författare)
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Pulse shaping at the MAX IV photoelectron gun laser
- 2017
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Ingår i: IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference. - 9783954501823 - 9783954501823 ; , s. 1541-1543
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- A motivation for the development of a versatile, programmable source of shaped picosecond pulses for use in photocathode electron gun preinjectors is presented. We present the experimental setup for arbitrary longitudinal pusle shaping of the MAX IV photocathode gun laser. The setup consists of a grating-based Fourier-domain shaper capable of stretching the pulses directly in the UV domain. Preliminary results are presented and discussed.
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| 9. |
- Lindau, F, et al.
(författare)
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MAX IV Photocathode Gun Laser System Specification and Diagnostics
- 2017
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Ingår i: IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference. - 9783954501823 - 9783954501823 ; , s. 1544-1546
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The MAXIV injector has two guns - a thermionic used for ring injections, and a photocathode used for short pulse facility operation. A commercial Ti:sapphire laser from KMLabs drives the copper based photocathode gun. It has been running without major issues for more than 3 years. The laser delivers up to §I{500}{\textmu J} on the cathode at the third harmonic, §I{263}{nm}, via a vacuum laser transport system. To achieve the desired pulse duration of 2–§I10{ps} the laser pulses, originally ~§I{100}{fs} long, are stretched with a prism pair and the resulting §I{1.5}{ps} pulses stacked by a series of birefringent \textalpha -BBO crystals. Diagnostics consist of photodiodes, spectrometers, and cameras. Longitudinal pulse characterization is done with a cross correlator and a UV FROG.
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| 10. |
- Samoilenko, D, et al.
(författare)
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Discussion on CSR instability in EEHG Simulation
- 2021
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Ingår i: Proceedings of IPAC2021.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Echo-Enabled Harmonic Generation (EEHG) is an external seeding technique for XUV and soft X-ray Free Electron Lasers (FEL). It has recently been experimentally demonstrated and currently many facilities worldwide intend to incorporate it in user operation. The EEHG process relies on very accurate and complex transformations of electron beam phase space by means of a series of undulators coupled to lasers and dispersive chicanes. As a result of the phase space manipulation, electrons are bunched at a high harmonic of the seed laser wavelength allowing coherent emission at few nm wavelength.
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