TPC magnet cryogenic system

Technical Report · Sat Mar 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5067301· OSTI ID:5067301

Green, M A; Burns, W A; Taylor, J D; Van Slyke, H W

The Time Projection Chamber (TPC) magnet at LBL and its compensation solenoids are adiabatically stable superconducting solenoid magnets. The cryogenic system developed for the TPC magnet is discussed. This system uses forced two-phase tubular cooling with the two cryogens in the system. The liquid helium and liquid nitrogen are delivered through the cooled load by forced tubular flow. The only reservoirs of liquid cryogen exist in the control dewar (for liquid helium) and the conditioner dewar (for liquid nitrogen). The operation o these systems during virtually all phases of system operation are described. Photographs and diagrams of various system components are shown, and cryogenic system data are presented in the following sections: (1) heat leaks into the TPC coil package and the compensation solenoids; (2) heat leaks to various components of the TPC magnet cryogenics system besides the magnets and control dewar; (3) the control dewar and its relationship to the rest of the system; (4) the conditioner system and its role in cooling down the TPC magnet; (5) gas-cooled electrical leads and charging losses; and (6) a summation of the liquid helium and liquid nitrogen requirements for the TPC superconducting magnet system.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5067301
• Report Number(s): LBL-10552; TRN: 80-016948
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING MAGNETS
COOLING SYSTEMS
CRYOGENICS
DESIGN
FORCED CONVECTION
HEAT LOSSES
HELIUM
NITROGEN
OPERATION
PERFORMANCE TESTING
TWO-PHASE FLOW
CONVECTION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
ENERGY LOSSES
EQUIPMENT
FLUID FLOW
LOSSES
MAGNETS
NONMETALS
RARE GASES
SUPERCONDUCTING DEVICES
TESTING
420201* - Engineering- Cryogenic Equipment & Devices