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TY - CONF AU - Noto, F. AU - Cafici, M. AU - Carbonaro, A. AU - Di Stefano, A. AU - Pagano, A. AU - Speziale, F. ED - Chrin, Jan ED - Schaa, Volker RW TI - Status and Upgrade of the Cryogenic Plant of the LNS Superconducting Cyclotron After 25 Years of Operation J2 - Proc. of Cyclotrons2016, Zurich, Switzerland, September 11-16, 2016 C1 - Zurich, Switzerland T2 - International Conference on Cyclotrons and Their Applications T3 - 21 LA - english AB - The Superconducting Cyclotron (CS) is a compact ac-celerator with three sectors with a wide operating dia-gram, capable of accelerating heavy ions with values q/A from 0.1 to 0.5 up to energies from 10 to 80 MeV/u. An upgrade of the CS superconducting magnet is in progress to extend the capability of the machine to high intensity beam facilities. In this paper we describe the status of CS Cryostat and its Cryogenic Plant after 25 years of continuous opera-tions at 4.2 K with the exception of the stop of about one year for the tenth test and the stop for restoring of the liquefier and the main issues happened during that long time. We describe the last complex and demanding pro-cedure for the revamping of the He liquefier, its ancillary parts, other cryogenic parts of the CS, with special atten-tion about the Piping and Instrumentation, gas analysis, Heat Exchangers, LN2 transfer lines, Human-Machine Interface, vacuum system for thermal isolation, GHe re-covery system and the optimization for the consumption of electrical power. In conclusion we describe some hypothesis about the future upgrade of the Cryogenic system and the new Cry-ostat of the CS, in special way we analyse an approach to redefine the interconnection, piping boundary line and cryogenic diagnostic. PB - JACoW CP - Geneva, Switzerland SP - 325 EP - 327 KW - cryogenics KW - cyclotron KW - extraction KW - vacuum KW - radiation DA - 2017/01 PY - 2017 SN - 978-3-95450-167-0 DO - 10.18429/JACoW-Cyclotrons2016-THP10 UR - http://jacow.org/cyclotrons2016/papers/thp10.pdf ER -