| 1. |
- Brandin, E, et al.
(författare)
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Short communication: HIV type 2 dynamics
- 2005
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Ingår i: AIDS research and human retroviruses. - : Mary Ann Liebert Inc. - 0889-2229 .- 1931-8405. ; 21:7, s. 608-610
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Meirose, Bernhard, et al.
(författare)
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Real-time accelerator diagnostic tools for the max iv storage rings
- 2020
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Ingår i: Instruments. - : MDPI AG. - 2410-390X. ; 4:3
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, beam diagnostic and monitoring tools developed by the MAX IV Operations Group are discussed. In particular, beam position monitoring and accelerator tunes visualization software tools, as well as tools that directly influence the beam quality and stability, are introduced. An availability and downtime monitoring application is also presented.
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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. |
- Selpi, Selpi, 1977, et al.
(författare)
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Automatic real-time FACS-coder to anonymise drivers in eye tracker videos
- 2011
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Ingår i: Proceedings of the IEEE International Conference on Computer Vision. 2011 IEEE International Conference on Computer Vision Workshops, ICCV Workshops 2011, Barcelona, 6-13 November 2011. - 9781467300629 ; , s. 1986-1993
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Konferensbidrag (refereegranskat)abstract
- Driver’s face is a rich source of information for understanding driver behaviour. From the driver’s face, onecould get an idea of the driver’s emotional state and wheres/he looks at. In recent years, naturalistic driving studies and field operational tests have been conducted to collect driver behavioural data, which often includes video of the driver, from many drivers driving for an extended period of time. Due to the Data Privacy Act, it is desirable to make the driver video anonymous, while preserving the original facial expressions. This paper describes our attempt to make a system that could do so. The system is a combination of an automatic Facial Action Coding System (FACS) coder based on Active Appearance Models (AAMs), a classifier that analyses local deformations in the AAM shape mesh and a 3D visualisation. The image acquisition hardware is based on a SmartEye eye tracker installed in a vehicle. The eye tracker we used provides a constant image quality independent of external illumination, which is a precondition for deploying the system in a vehicle environment. While the system uses Action Unit (AU) activations internally, the evaluation was done using the six basic emotions.
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