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[en] A general account is given of the 400-GeV proton synchrotron, known as Super Proton Synchrotron (SPS), of the European Organization for Nuclear Research (CERN) at Geneva. A brief chapter on the history of the project covers the steps leading to the earlier plan for a 300-GeV accelerator at a new CERN laboratory elsewhere in Europe, abandoned in 1971 in favour of the present machine, and the progress of construction of the latter. The general features of the SPS design are outlined, illustrated by an aerial view of the CERN site, a plan of the SPS, and interior views of the SPS ring tunnel and main control room. (WSN)
[en] A general account is given of the 400-GeV proton synchrotron, known as Super Proton Synchrotron ( SPS), of the European Organization for Nuclear Research (CERN) at Geneva. A brief chapter on the history of the project covers the steps leading to the earlier plan for a 300-GeV accelerator at a new CERN laboratory elsewhere in Europ-, abandoned in 1971 in favour of the present machine, and the progress of construction of the latter. The general features of the SPS design are outlined, illustrated by an serial view of the CERN site, a plan of the SPS, and interior views of the SPS ring tunnel and main control room. (WSN)
[fr]On presente une description generale du synchrotron a protons de 400 GeV, connu sous le nom de Super Synchrotron a Protons (SPS), de l'Organisation europeenne pour la Recherche nucleaire (CERN) a Geneve. Un court chapitre historique retrace les etapes du projet precedent, abandonne en 1971, qui prevoyait l'implantation d'un accelerateur de 300 GeV dans un nouveau laboratoire du CERN, qui aurait ete situe ailleurs en Europe, et fait le point sur l'etat d'avancement de l'accelerateur actuel. Les caracteristiques generales du
[en] The CERN SPS (super proton cyclotron) is briefly described: design and performance; magnets and power supplies; beam acceleration, injection and extraction; monitoring; structures and facilities
[fr]On donne une description generale du super synchrotron a protons du CERN de 400GeV: principe et caracteristiques, aimants et alimentation, systeme accelerateur, injection et extraction, mesures et controles, et genie-civil
[en] The main vacuum pumping equipment of the SPS vacuum system at CERN consists of two types of sputter ion pumps: about 650 pumps with 35 l/s speed in the normal sectors and 160 pumps with 420 l/s in the sections with special equipment. Reported are some of the experiments with theses pumps from the test phase of the prototypes and the initiating period of the SPS. It results that the pumps: - hold a working pressure 10 times below the original design value, - will allow the continuous running of the accelerator if the local pressure increase can be held below 1.10-5 mbar, - have a life time of about 1000 hours at a pressure of 4.10-5 mbar
[en] The system of real-time monitoring of physical data applied in NA-48, NA-48/1, and NA-48/2 experiments at CERN SPS is described. The system was the most automated independent subsystem of these experiments; it provided a possibility of on-the-fly detection of problems with experimental equipment and software; it was also applied for detector calibration and adjustment of experimental conditions.
[en] Event-by-event fluctuations and correlations in azimuthal angle are currently widely investigated in various experiments. In this paper the Φ measure (earlier used in experiments to evaluate fluctuations in pT) is now applied to azimuthal angle φ. Properties of this Φφ function are investigated through fast generators and with complex models. Preliminary results of NA49 on Φφ are also presented.
[en] The inaugural opening of the 400 GeV proton accelerator at CERN took place on 7 May 1977. A review of difficulties encountered during the 14 years since the SPS was first proposed is given and experiments already underway are outlined. The advantages of this facility over Fermilab and the type of experiment which can now be undertaken to answer some of the questions left open by Fermilab are discussed. (U.K.)
[en] The operation of the SPS with high intensity bunched beams is limited by the electron cloud building-up in both the arcs and long straight sections. Two consolidation options have been considered: suppression of the electron cloud build-up using coatings or relying, as before, on the scrubbing mitigation. A status report on both options will be given with a particular emphasis on measurements plans for 2012 and pending issues. The testing needs, corresponding beam parameters and MD time in 2012 will be addressed. The criteria for the decision making and the corresponding schedule will be discussed. (author)