Studio di fattibilità dei magneti in configurazione "Halbach" dello spettrometro dell'esperimento FOOT

Questa nota presenta uno studio di fattibilita per dei magneti permanenti da utilizzare nella costruzione dello spettrometro dell'esperimento FOOT. Vengono presentate simulazioni magnetiche in 2D e 3D per differenti configurazioni dei magneti permanenti in configurazione "Halbach" facendo una valutazione comparativa delle dimensioni necessarie, in particolare per il materiale magnetico, per ottenere i valori di campo richiesti. Infine si presenta una simulazione di un sistema di due magneti così come al momento si pensa di realizzare il sistema finale dell'esperimento

Il portale web degli acquisti INFN

L’oggetto di questo lavoro consiste nella descrizione delle applicazioni e dei servizi web progettati per il nuovo portale degli acquisti INFN. Sono descritti aspetti architetturali, metodologici ed organizzativi relativi al sistema nel suo insieme, rimandando a futuri lavori gli approfondimenti sulle singole componenti applicative

The instrumented magnets for the OPERA experiment: construction and commissioning

The design and construction of the 990-ton gapless iron magnets for the OPERA experiment represent a major challenge from the point of view of mechanics, electric and heat engineering. Two of such magnets have been built in a deep underground hall of the Gran Sasso laboratories between 2003 and 2006 and they have been switched on for the first time in March 2006. In this paper we discuss the construction and characterization of these devices. First experience with the CNGS beam are also reported. © 2007 Elsevier B.V. All rights reserved

The PLASMONX Project for advanced beam physics experiments

The Project PLASMONX is well progressing into its design phase and has entered as well its second phase of procurements for main components. The project foresees the installation at LNF of a Ti:Sa laser system (peak power > 170 TW), synchronized to the high brightness electron beam produced by the SPARC photo-injector. The advancement of the procurement of such a laser system is reported, as well as the construction plans of a new building at LNF to host a dedicated laboratory for high intensity photon beam experiments (High Intensity Laser Laboratory). Several experiments are foreseen using this complex facility, mainly in the high gradient plasma acceleration field and in the field of mono- chromatic ultra-fast X-ray pulse generation via Thomson back-scattering. Detailed numerical simulations have been carried out to study the generation of tightly focused electron bunches to collide with laser pulses in the Thomson source: results on the emitted spectra of X-rays are presented

Multipoles Minimization in the DAPHNE Wigglers

The wigglers of the DAFNE main rings have been one of the major sources of the non-linearities in the collider at Frascati. A method to minimize the odd integrated multipoles around the beam trajectory (the even ones tend to vanish due to the periodicity of the magnet) has been developed and already described. After a study, including both multipolar and tracking analysis has been performed to determine the optimal configuration, the DAFNE wigglers have been modified accordingly. The results of the simulations have been validated by field map measurement

Magnetic Modeling, Measurements and Sorting of the CNAO Synchrotron Dipoles and Quadrupoles

CNAO is a synchrotron accelerator presently under commissioning in Pavia. The aim of this accelerator is to treat tumors with hadrons and to perform advanced clinical and radiobiological research. The CNAO will start treating patients with protons (60250 MeV range) and carbon ions (120400 MeV/u range) in three treatment rooms with four beam lines. Future upgrade with gantries is foreseen. This paper describes the design, magnetic measurements and sorting criterion used for the sixteen synchrotron main dipoles and twentyfour quadrupoles. The magnetic measurements results are compared with magnetic simulatio

Preparation Activity for the Siddharta-2 Run at DAΦNE

International audienceDAΦNE, the Frascati lepton collider working at the c.m. energy of the F resonance, continues to be a very suitable infrastructure to realize experiments aimed at studying elementary particles and nuclear physics. The motivations of this long lasting interest are related to the DAΦNE ability of increasing its performances in terms of luminosity thanks to the innovative Crab-Waist collision scheme. In this framework, a new run for the SIDDHARTA-2 experiment has been planned in the year 2019. The detector presently installed in the interaction region, KLOE-2, will be removed and a new low-beta session, equipped with new permanent magnets quadrupoles, will be installed. Diagnostics tools will be improved especially the ones used to keep under control the beam-beam interaction. The horizontal feedback in the positron ring will be potentiated in order to achieve a higher positron current. The design and development work done in view of the SIDDHARTA-2 run is presented and discussed

DAΦ\PhiNE Collider with Crab Waist Scheme: from KLOE-2 to SIDDHARTA-2 Experiment

International audienceIn March 2018 DAΦNE, the Italian electron-positron Phi-factory based on the Crab Waist collision concept, has successfully completed the challenging experimental run for the KLOE-2 detector. At present, installation of the SIDDHARTA-2 detector is underway in order to start data acquisition with the new experimental apparatus in the year 2019. In this paper we review the collider performances during the KLOE-2 run in terms of the achieved beam currents, the peak and integrated luminosity and encountered beam dynamics challenges. The design and development work done in view of the SIDDHARTA-2 operation is presented and discussed