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Preliminary Ground Motion Measurements at LNF Site for the Super B Project

Abstract : Fol­low­ing pre­vi­ous mea­sure­ments, more de­tailed pre­lim­i­nary ground mo­tion mea­sure­ments have been per­formed at the LNF site for the Super B pro­ject site char­ac­ter­i­za­tion. First, re­sults of ver­ti­cal ground mo­tion mea­sure­ments done dur­ing 18 hours are shown in order to get an idea of the evo­lu­tion of the ground mo­tion am­pli­tude with time. Sec­ond­ly, mea­sure­ments of ground mo­tion (in the 3 di­rec­tions of space) were per­formed at dif­fer­ent lo­ca­tions on sur­face in order to eval­u­ate and to com­pare the in­flu­ence of var­i­ous vi­bra­tion sources. Then, re­sults of ground mo­tion co­her­ence mea­sured for dif­fer­ent dis­tances at two lo­ca­tions close to each other but with soft and rigid floor are com­pared. These mea­sure­ments are also com­pared to the ones done in the ATF2 beam line where a spe­cial floor was built for sta­bil­i­ty. By this way, the re­sults re­veal that the LNF is a good site to use ground mo­tion co­her­ence prop­er­ties for sta­bil­i­ty like it has been done for ATF2.
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B. Bolzon, L. Brunetti, A. Jeremie, M. Esposito, U. Rotundo, et al.. Preliminary Ground Motion Measurements at LNF Site for the Super B Project. 1st International Particle Accelerator Conference (IPAC 2010), May 2010, Kyoto, Japan. pp.1482-1484. ⟨in2p3-00497106⟩

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