Linear Accelerator Test Facility at LNF Conceptual Design Report

Test beam and irradiation facilities are the key enabling infrastructures for research in high energy physics (HEP) and astro-particles. In the last 11 years the Beam-Test Facility (BTF) of the DA{\Phi}NE accelerator complex in the Frascati laboratory has gained an important role in the European infrastructures devoted to the development and testing of particle detectors. At the same time the BTF operation has been largely shadowed, in terms of resources, by the running of the DA{\Phi}NE electron-positron collider. The present proposal is aimed at improving the present performance of the facility from two different points of view: extending the range of application for the LINAC beam extracted to the BTF lines, in particular in the (in some sense opposite) directions of hosting fundamental physics and providing electron irradiation also for industrial users; extending the life of the LINAC beyond or independently from its use as injector of the DA{\Phi}NE collider, as it is also a key element of the electron/positron beam facility. The main lines of these two developments can be identified as: consolidation of the LINAC infrastructure, in order to guarantee a stable operation in the longer term; upgrade of the LINAC energy, in order to increase the facility capability (especially for the almost unique extracted positron beam); doubling of the BTF beam-lines, in order to cope with the signicant increase of users due to the much wider range of applications.Comment: 71 page

DAFNE Consolidation Program and Operation with the KLOE-2 Detector

After a long preparatory phase, including a wide hardware consolidation program, the Italian lepton collider DAFNE, is now systematically delivering data to the KLOE-2 experiment. In approximately 200 days of operation 1 fb-1 has been given to the detector limiting the background to a level compatible with an efficient data acquisition. Instantaneous and maximum daily integrated luminosity measured, so far, are considerably higher with respect to the previous KLOE runs, and are: L(inst) ~ 2.0 1032 cm-2s-1, and L(day) ~ 12.5 pb-1 respectively. A general review concerning refurbishing activities, machine optimization efforts and data taking performances is presented and discussed

DAΦNE Φ-factory upgrade for Siddharta run

An upgrade of the ΦNE Φ-Factory at LNF is planned in view of the installation of the Siddharta detector in fall 2007. A new interaction region suitable to test the large Piwinski angle and crab waist (CW) collision schemes will be installed. Other machine improvements, such as new injection kickers, bellows and beam pipe layouts will be realized, with the goal of reaching luminosity of the order of 1033/cm2 /s. The principle of operation of the new scheme, together with hardware designs and simulation studies, are presented

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

Status of DAΦ\PhiNE: from KLOE-2 to SIDDHARTA-2 Experiment with Crab-Waist

International audienceDafne, the Italian lepton collider, is running since more than a decade thanks to a radical revision of the approach used to deal with the beam-beam interaction: the Crab-Waist collision scheme. In this context, the collider has recently completed a long term activity program aimed at providing an unprecedented sample of data to the KLOE-2 detector, a large experimental apparatus including a high intensity solenoidal field strongly perturbing ring optics and beam dynamics. The KLOE-2 run has been undertaken with the twofold intend of collecting data for rare decay flavor physics studies, and testing the effectiveness of the new collision scheme in the presence of a strongly perturbing experimental apparatus. The performances of the collider are reviewed and the limiting factors discussed along with the preparatory phase activities planned to secure a new collider run to the SIDDHARTA-2 experiment

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