Speaker
Gabriella Rolando
(CERN)
Description
The superconducting solenoid of the PANDA experiment at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, is designed to provide a magnetic field of 2 T over a length of about 4 m in a bore of 1.9 m. To allow a warm target feed pipe oriented transversely to the solenoid axis and penetrating through the cryostat and solenoid, the magnet is split into 3 inter-connected coils fitted in a common support cylinder.
During normal operation, cooling of the cold mass to the working temperature of 4.5 K will be achieved through the circulation by natural convection of two-phase helium in cooling pipes attached to the Al-alloy support cylinder. Pure aluminum strips glued to the inner surface of the three coils and thermally bonded to the cooling pipes allow minimizing the temperature gradient across the 6-layers coils.
The thermal design of the cold mass during normal operation and current ramps up and down is validated using analytical approximations and numerical simulation.
Primary author
Gabriella Rolando
(CERN)
Co-authors
Alexander Vodopyanov
(Joint Inst. for Nuclear Research (RU))
Alexey Dudarev
(CERN)
Herman Ten Kate
(CERN)
Dr
Lars Schmitt
(GSI Darmstadt)
