Paper | Title | Page |
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TUPAB095 | The New MAX IV Gun Test Stand | 1537 |
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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. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB095 | |
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TUPAB096 | Pulse Shaping at the MAX IV Photoelectron Gun Laser | 1541 |
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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. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB096 | |
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TUPAB097 | MAXIV Photocathode Gun Laser System Specification and Diagnostics | 1544 |
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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. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB097 | |
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TUPAB099 | Status of MAX IV Linac Beam Commissioning and Performance | 1547 |
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The MAX IV linac is used both for full energy injection into two storage rings at 3 GeV and 1.5 GeV, and as a high brightness driver for a Short Pulse Facility (SPF). The linac has also been designed to handle the high demands of an FEL injector. The linac is now routinely injecting into the two storage rings, and commissioning work is focused towards delivering high brightness pulses to the SPF. In this paper we present results from characterisation of the linac in ring injection mode, as well as results from measurements of key parameters for the SPF such as bunch length and emittance. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB099 | |
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TUPIK031 | Driver-Witness-Bunches for Plasma-Wakefield Acceleration at the MAX IV Linear Accelerator | 1743 |
SUSPSIK040 | use link to see paper's listing under its alternate paper code | |
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Beam-driven plasma-wakefield acceleration is an acceleration scheme promising accelerating fields of at least two to three orders of magnitude higher than in conventional radiofrequency accelerating structures. The scheme relies on using a charged particle bunch (driver) to drive a non-linear plasma wake, into which a second bunch (witness) can be injected at an appropriate distance behind the first, yielding a substantial energy gain of the witness bunch particles. This puts very special demands on the machine providing the particle beam. In this article, we use simulations to show that, if driver-witness-bunches can be generated in the photo-cathode electron gun, the MAX IV Linear Accelerator could be used for plasma-wakefield acceleration. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK031 | |
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WEPAB077 | The Soft X-Ray Laser Project at MAX IV | 2760 |
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A soft x-ray laser 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 (1-0.2 keV). The system is building on the MAX IV linac system, already today providing 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. We here describe design issues and solutions for the accelerator and FEL system.
* http://frielektronlaser.se/onewebmedia/SXLsciencecase161102.pdf |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB077 | |
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THPAB140 | MAX IV Online Linac Model | 4047 |
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An online linac model has been developed at MAX IV in order to enable a calculation of the properties of the linac beam based on the actual settings of the magnetic elements. The model is based on the Elegant simulation code and uses the design linac lattice file. A set of Matlab scripts fetch the actual settings of all elements via the Tango control system, pass these values on to Elegant and run the simulation. The model includes an optimization option for yielding desired beta- and alpha-function values at various points along the linac by calculating optimal settings for chosen elements. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPAB140 | |
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