Open AccessD0 Cryo CC Heater Installation
Author(s) -
J. Urbin
Publication year - 1991
Language(s) - English
Resource type - Reports
DOI - 10.2172/1031775
Subject(s) - feedthrough , instrumentation (computer programming) , fabrication , cable gland , normalization property , computer science , engineering drawing , electrical engineering , materials science , mechanical engineering , engineering , operating system , medicine , alternative medicine , pathology , programming language
Nine pairs of heaters are installed in the bottom of the CC pressure vessel.The physical layout is shown in the CC internal development drawing, D0 dwg. 3740.510-ME-255523. Electrically the heater system is a delta configuration. Electrical details are found on D0 dwg. 3740.515EC-273761. The feedthrough connectors for power to the heaters are located in the instrumentation box. Connector positions are found on D0 dwg.3740.515-EC-273760. Original sketches for the above named drawings are included in this document. The heaters and wiring were cleaned various times prior to and after installation with ethyl a1chohol. At various stages in the installation hi-pot and continuity tests were successfully accomplished to verify the integrity of the system. The fmal hi-pot numbers are included in the documentation. The heaters and wiring are kept separated from thermometry and purity cell wiring by SS sheetmetal barriers. The fabrication, testing and installation was completed by M. Hentges and his crew from AD/Cryo