Injector Layout and Beam Injection into Solaris

The Solaris synchrotron radiation storage ring to be built in Krakow, Poland is based on the MAX IV 1.5 GeV design. The injector will be a linear accelerator and its components identical to those for the MAX IV project, however, injection is not at full energy and the injector layout is different. The linac and transfer line layout, optics and injection scheme into the storage ring is presented and an analysis of accumulation before energy ramping is discussed

Project Status of the Polish Synchrotron Radiation Facility Solaris

Abstract in Undetermined The Polish synchrotron radiation facility Solaris is being built at the Jagiellonian University in Krakow. The project is based on an identical copy of the 1.5 GeV storage ring being concurrently built for the MAX IV project in Lund, Sweden. A general description of the facility is given together with a status of activities. Unique features associated with Solaris are outlined, such as infrastructure, the injector and operational characteristics

Studies on high brightness electron beams for short pulses and free electron laser

Accelerator based lightsources are one of the most powerful tools today for producing high intensity radiation at very short wavelengths. While synchrotron storage rings provide a high average brilliance in a wide wavelength range, the next generation of lightsources aim towards producing ultra-short pulses in the X-ray regime. A very promising technique implemented or proposed at many accelerator laboratories around the world is the free electron laser (FEL). In an FEL a high brightness electron beam interacts with an electric field in an undulator to produce coherent radiation at short wavelengths. The FEL puts very high demands on the quality of the electron beam, such as low energy spread, low emittance and high peak current. In another method, spontaneous, incoherent X-ray pulses are produced in an undulator or wiggler. In these sources focus is put on achieving ultra-short pulses at very short wavelengths and the demands on the high brightness electron beam are high when it comes to bunch length, and bunch shape. In this thesis I discuss some design concepts for producing the high brightness electron beams needed in an accelerator based short-pulse X-ray source. I present results from beam dynamics studies and start-to-end simulations of some future and present lightsources, including beam linearisation, bunch compression and collective effects. The thesis also contains a description of the FEL test facility constructed at MAX-lab where the concepts of seeding and harmonic generation are tested. Full start-to-end simulations of the facility, from the production of electrons at the gun cathode, through acceleration and bunch compression to the harmonic generation of coherent photons, have been performed. Progress of commissioning and results from experiments are presented, including characterisation of a photoinjector and bunch compression measurements

RPA, den nya medarbetaren : En studie om hur Robotic Process Automation påverkar rutiner för låneprocessen hos svenska storbanker

Studien undersöker hur implementeringen av Robotic Process Automation (RPA) påverkat de fyra storbankerna i Sverige: Handelsbanken, Nordea, SEB och Swedbank, rutiner på lånesidan. Lånesidan står för cirka 50 procent av storbankernas tillgångar på koncernnivå och utgör därmed en betydande del av deras verksamhet. Nya digitala aktörer hotar bankerna och de behöver därför effektivisera processer och beskära kostnader. RPA är ett softwareprogram som tar över manuella processer som tidigare utförts av människor och kan hjälpa företag att beskära kostnader samt effektivisera processer. För att studera förändringarna av rutiner gjordes en flerfallstudie där empirin analyserades genom Feldman och Pentlands teori om rutiner och Pentland och Feldmans modell. Efter intervjuer med de fyra storbankerna kunde det konstateras att samtliga banker implementerat RPA. Tre av de fyra storbankerna har implementerat RPA på lånesidan. RPA har ändrat låneprocessen genom att: Effektivisera den, gjort den mer enhetliga, möjliggjort för de anställda att fokusera på kunder och utföra mer avancerade arbetsuppgifter samt gjort den mer detaljstyrd. Den ostensiva aspekten har blivit starkare i låneprocessen medan den performativa aspekten fått mindre utrymme och vid processer som helt ersatts av RPA har den ostensiva aspekten och den performativa aspekten blivit ett

RPA, den nya medarbetaren : En studie om hur Robotic Process Automation påverkar rutiner för låneprocessen hos svenska storbanker

Studien undersöker hur implementeringen av Robotic Process Automation (RPA) påverkat de fyra storbankerna i Sverige: Handelsbanken, Nordea, SEB och Swedbank, rutiner på lånesidan. Lånesidan står för cirka 50 procent av storbankernas tillgångar på koncernnivå och utgör därmed en betydande del av deras verksamhet. Nya digitala aktörer hotar bankerna och de behöver därför effektivisera processer och beskära kostnader. RPA är ett softwareprogram som tar över manuella processer som tidigare utförts av människor och kan hjälpa företag att beskära kostnader samt effektivisera processer. För att studera förändringarna av rutiner gjordes en flerfallstudie där empirin analyserades genom Feldman och Pentlands teori om rutiner och Pentland och Feldmans modell. Efter intervjuer med de fyra storbankerna kunde det konstateras att samtliga banker implementerat RPA. Tre av de fyra storbankerna har implementerat RPA på lånesidan. RPA har ändrat låneprocessen genom att: Effektivisera den, gjort den mer enhetliga, möjliggjort för de anställda att fokusera på kunder och utföra mer avancerade arbetsuppgifter samt gjort den mer detaljstyrd. Den ostensiva aspekten har blivit starkare i låneprocessen medan den performativa aspekten fått mindre utrymme och vid processer som helt ersatts av RPA har den ostensiva aspekten och den performativa aspekten blivit ett

Short pulse facility for MAX-lab

Several phenomena in physics and chemistry (such as phase-transitions, chemical reactions and structural changes in biomolecules) are driven on timescales in the fs range. To probe these phenomena short photon pulses of sufficiently short wavelength to directly probe the structure are necessary. The MAX IV proposal includes a short-pulse facility (SPF) which will be able to give these pulses. In this article we give an overview of short pulse sources. We introduce the science in the scope for the MAX IV SPF. We also describe the MAX IV SPF and give a glimpse of the MAX IV project as a whole. (C) 2008 Elsevier B.V. All rights reserved

First experimental measurements of the caustic nature of trajectories in bunch compressors

Advancements in the theory describing density perturbations in accelerated charge particle beams, known as caustics, has been gathering interest over the past few years. This proceeding describes the first experimental measurements of the caustic nature of charged particle trajectories in a particle accelerator. Caustics by their nature are discontinuities that result from small continuous perturbations of an input. Under certain conditions, small density modulations will reliably produce striking changes in the corresponding output current profile. These current modulations can shift along the bunch with varying higher-order longitudinal dispersion. The MAX IV linac double-bend achromats provide the perfect test bed for experimentally verifying how the caustic lines evolve. The natural amplification of small perturbations makes caustics an attractive diagnostic tool, and effective tool for characterise the bunch compressors. This approach also allows us to modify and improve the longitudinal charge profile, removing current spikes or creating tailor shaped current profiles