Dupont, Thierry; Courty, Jean-Christophe; Perinic, Goran
April 2010
AIP Conference Proceedings;4/9/2010, Vol. 1218 Issue 1, p3
Conference Proceeding
After having served for the surface tests of the Compact Muon Solenoid (CMS) magnet, the cold box and ancillaries of the CMS helium refrigerator have been dismantled, moved and re-installed in the USC55 cavern in 2007. The full re-commissioning in the cavern has been followed by several tests of the refrigerator to confirm its nominal performance before it was used for the magnet and detector tests in 2008. During these tests the safety modes of the refrigeration system have been tested and improved. After a nine-year project both, the magnet and the refrigeration system are now ready for the CMS operation.


Related Articles

  • PRELIMINARY COMMISSIONING OF SUPERCONDUCTING MAGNETS AND CRYOGENIC SYSTEM OF BEPC II. ZONG, Z. G.; LIU, L. Q.; XU, Q. J.; XIONG, L. Y.; ZHANG, L.; LI, S. P.; HE, K. // International Journal of Modern Physics B: Condensed Matter Phys;7/20/2007, Vol. 21 Issue 18/19, p3163 

    A helium cryogenic system with cooling capacity of 1 kW at 4.5 K was set up at Institute of High Energy Physics, Chinese Academy of Sciences, Beijing. This helium refrigerating system is dedicated for the cooling of two superconducting radio frequency (SRF) cavities, two interaction region...

  • Quench Induced Pressure Rise in the Cooling Pipes of the ATLAS Barrel Toroid Model. Haug, F.; Bottura, L.; Broggi, F.; Junker, S. // AIP Conference Proceedings;2004, Vol. 710 Issue 1, p711 

    The ATLAS superconducting magnet system consists of a Barrel Toroid, two End-Cap Toroids and a Solenoid. Eight individual racetrack coils will be assembled to form the Barrel Toroid with overall dimensions of 26 m length and 20 m diameter. In order to verify the design concept a 9 m long short...

  • 4 Kelvin Cryogenic Probe for 500 MHz NMR. Yoshimoto, F.; Takahashi, M.; Horiuchi, T.; Hobo, F.; Inoue, K.; Miki, T.; Hamada, M.; Okamura, T.; Yokoyama, S.; Maeda, H. // AIP Conference Proceedings;2006, Vol. 823 Issue 1, p704 

    This paper describes the development of a 4 K cryogenic probe for 500 MHz Nuclear Magnetic Resonance (NMR) analyses. As thermal noise is proportional to the square root of the RF coil temperature, sensitivity of a 4 K probe is expected to be double that of conventional 25 K probes. The 4 K probe...

  • Performance of a proximity cryogenic system for the ATLAS central solenoid magnet. Doi, Y.; Yamamoto, A.; Makida, Y.; Kondo, Y.; Kawai, M.; Aoki, K.; Haruyama, T.; Kondo, T.; Mizumaki, S.; Wachi, Y.; Mine, S.; Haug, F.; Delruelle, N.; Passardi, G.; ten Kate, H. // AIP Conference Proceedings;2002, Vol. 613 Issue 1, p47 

    The ATLAS central solenoid magnet has been designed and constructed as a collaborative work between KEK and CERN for the ATLAS experiment in the LHC project. The solenoid provides an axial magnetic field of 2 Tesla at the center of the tracking volume of the ATLAS detector. The solenoid is...

  • Commissioning of the Cryogenic System for the ATLAS Superconducting Magnets. Delruelle, N.; Haug, F.; Ten Kate, H.; Passardi, G.; Pengo, R.; Pezzetti, M.; Pirotte, O.; Baynham, E.; Bradshaw, T.; Rochford, J. // AIP Conference Proceedings;2006, Vol. 823 Issue 1, p2018 

    The paper describes the test results of the helium cryoplant for the superconducting magnets of the ATLAS particle detector at CERN. It consists of two refrigerators used in common by all the magnets and of two proximity cryogenic systems (PCS) interfacing respectively the toroids and the...

  • Tests of By-Pass Diodes at Cryogenic Temperatures for the KATRIN Magnets. Gil, W.; Bolz, H.; Jansen, A.; Müller, K.; Steidl, M.; Hagedorn, D. // AIP Conference Proceedings;Jan2014, Vol. 1574, p274 

    The Karlsruhe Tritium Neutrino experiment (KATRIN) requires a series of superconducting solenoid magnets for guiding beta-electrons from the source to the detector. By-pass diodes will operate at liquid helium temperatures to protect the superconducting magnets and bus bars in case of quenches....

  • Commissioning of the Helium Refrigeration System for the Compact Muon Solenoid (CMS) Detector of LHC. Perinić, G.; Dupont, T. // AIP Conference Proceedings;2006, Vol. 823 Issue 1, p2026 

    At CERN a new helium refrigeration plant specified for a cooling capacity of 800 W at 4.45 K, 4500 W between 60 K and 80 K and 4 g/s liquefaction simultaneously has been installed and commissioned. In a first operation phase, the plant will provide the refrigeration capacity for the cool down...

  • Cryogenics for a 5 Tesla Superconducting Solenoid with Large Aperture at DESY. Gadwinkel, E.; Herzog, H.; Lierl, H.; Notz, D.; Schaffran, J.; Schoeneburg, B. // AIP Conference Proceedings;2004, Vol. 710 Issue 1, p719 

    A large aperture superconducting solenoid-magnet with fields up to 5.25 Tesla is being set up as high field test facility at DESY. It is used to measure prototype time projection chambers foreseen as detectors for a future high energy physics collider experiment. The new cryogenic supply of this...

  • Variable path cryogenic acoustic interferometer Kucera, D.M.; Ketterson, J.B. // Review of Scientific Instruments;Dec1998, Vol. 69 Issue 12, p4156 

    Presents a variable path acoustic interferometer for use at cryogenic temperatures. Method of inducing movement without mechanical coupling; Components of the instrument; Results of the test runs performed in gaseous and liquid helium.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics