In vista della scadenza del bando FIRB FUTURO IN RICERCA , fissata per lunedì 4 febbraio, i ricercatori interni ed esterni sono incoraggiati a presentare. 13 Maggio Riapertura bando LLP – ERASMUS a.a. / January 31, Three-year FIRB young investigator fellowship in Bioinformatics. scarica il bando n. , Concorso per il conferimento di n. 1 borsa di formazione tecnica per diplomati da usufruire presso la sezione di Genova,
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Native state, function and evolution of proteins.
Ricerca – Programma – Futuro in Ricerca
The high flexibility of the model allows to study the effect of arbitrary bunch shapes, and to extend the transformer ratio studies to multibunch wakefield excitation schemes. Final timetable and room roster. In this setup, beam quality, in terms of 6D volume in phase space, will be the main concern. The goal of the external injection experiment at SPARC-LAB is to demonstrate the possibility to accelerate a high brightness electron beam, produced by a conventional accelerator, by exploiting the wakefields generated in an underdense plasma by a high power laser pulse, without degradating too much its emittance and energy spread.
A 1D model of plasma wakefield excitation based on relativistic plasma cold fluid and Maxwell equations has been implemented. Cirb Curie – Prof. This means that the RMO phase noise high frequency components cannot be followed and they should be very low to ensure a low time jitter between laser pulse and RF linac phase.
A train of two short fs electron bunches, almost overlapped in time, with a two-level energy distribution, has been injected in the SPARC undulator, resulting into FEL pulses at two characteristic frequencies with multi-peaked time structure.
Cannistraro – cannistr AT unitus.
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Wednesday November 11 – Aula Lauree – 2. Sa laser, having fs rms pulse length, directly derived from the photocathode’s laser. Mostacci Comb beams are sub-picosecond, high-brightness electron bunch trains generated via the velocity bunching technique.
Badno laser pulse, 25 f s long, focused down to 65 microns into the capillary is injected ahead of the bunch, drives a weakly non-linear plasma wave with wavelength of about microns.
Diversity and evolution of satellite DNAs. Comb beams are sub-picosecond, high-brightness electron bunch trains generated via the velocity bunching technique.
November 30, PhD opportunities: A complete map of the transformer ratio is obtained by varying: A comparison study between pulsed laser ablation deposition and thermal evaporation techniques has been carried out obtaining, as main result, that the adhesion to the substrate of Pb thin films by thermal evaporation is unsatisfactory and not suited for use in radiofrequency guns as photo-cathodes.
Following the idea of plasma wave resonant excitation driven by a train of short bunches, we have started to study the requirements in terms of plasma for SPARC-LAB.
Single-shot two-color spectra taken with a fiber spectrometer resolution: Plasma wave resonant excitation driven by a train of short bunches: Slice emittance blue line and slice energy spread green line of the bunch after acceleration in the capillary configuration.
SEM images at two magnifications of Pb films: Borse di studio, di perfezionamento e di post-dottorato per il The second one foresees the exploitation of a hollow dielectric waveguide glass capillary in order to extend the useful accelerating length.
The slope of the linear curve fitting data indicates a single-photoemission process. Combining high brightness electron bunches from conventional accelerators and high accelerating fields reachable with plasmas could be a good compromise allowing to further accelerate high brightness electron bunches coming from LINAC while preserving electron beam quality.
Moreover both in the linear as well as in the non-linear regime the theoretical limit of 2 for the transformer ratio of a single symmetric bunch can be exceeded using asymmetric bunches in the linear regime as well as symmetric bunches in nonlinear regime.
February Bologna Winter School Visualization and Reverse engineering gene regulatory networks. Silvio Tosatto – silvio.
The laser clients of the synchronization system are typically IR laser oscillators with repetition banod of hundreds MHz. They are used to drive an optical amplification chain of different lasers along the experimental area photo-injector, seeding, probe or interaction laser. We show a simplified model to study the evolution of plasma induced by discharge, very useful to design the discharge circuit able to fully ionize the gas and bring the plasma at the needed temperature and density.
Generation of high brightness electron beams from plasma-based accelerators – STATUS
The theoretical limit of two for the transformer ratio of a single, symmetric bunch in linear regimes has been verified, as ffirb as the overcoming of this limit with asymmetric driving bunches or in nonlinear regimes. Dottorato in fisica e chimica dei sistemi biologici. The comb scheme comb laser pulse and RF compression proposed in [ M.
Position available from October – Contacts: Enrica Chiadroni We discuss here the production of trains of two-color FEL radiation pulses driven by a comb-like electron beam. In the first one, the laser pulse is not guided and acceleration occurs on the natural Bwndo range of the laser itself, yielding an accelerated beam which can be considered as a proof of principle experiment.
Dependence of the charge density on laser intensity. It is 2031 that the transformer ratio critically depends on the bunch shape and on the density ratio.