Author :
Ruber, R.J.M.Y. ; Makida, Y. ; Cipolla, G. ; Deront, L. ; Doi, Y. ; Haruyama, T. ; Haug, F. ; Kanahara, T. ; Kawai, M. ; Kondo, T. ; Kondo, Y. ; Kopeykin, N. ; Mizumaki, S. ; Metselaar, J. ; Park, A. ; Pavlov, O.V. ; Pezzetti, M. ; Pirotte, O. ; Ravat, S.
Abstract :
The ATLAS detector for the LHC at CERN requires a superconducting solenoid, which provides the magnetic field for the inner detector. The ATLAS central solenoid and its associated proximity cryogenics system has been designed by KEK in collaboration with CERN. Following construction and preliminary tests at Toshiba in Japan the equipment has been shipped to CERN. The system is being prepared for the integration in the common cryostat with the LAr calorimeter, whereafter a full on-surface test has to be completed before its final installation 100 m underground in the ATLAS cavern. For this purpose a provisional set-up for commissioning of the final proximity cryogenics, the connecting chimney and the solenoid has been established. A number of tests and simulations have been conducted in applying a new process control system to validate the cryogenics functionalities, the electrical powering scheme as well as the magnet control and safety systems. The present status of the solenoid project and the results of the various cryogenic and electrical tests are reported.
Keywords :
cryogenics; particle spectrometers; superconducting device testing; superconducting magnets; ATLAS cavern; ATLAS central solenoid; ATLAS detector; CERN; Japan; KEK; LAr calorimeter; LHC; Toshiba; connecting chimney; cryostat; detector magnet; electrical powering scheme; inner detector; magnet control systems; magnetic field; on-surface integration; on-surface test; process control system; proximity cryogenics; quench; safety systems; superconducting solenoid; Collaboration; Cryogenics; Detectors; Joining processes; Large Hadron Collider; Magnetic fields; Process control; Solenoids; Superconducting magnets; System testing; Detector magnet; quench; superconducting;
