Modeling Results of the Quench Behavior of a Nb-Ti Canted-Cosine-Theta Corrector Magnet for LHC

A newly designed superconducting magnet of the Canted-Cosine-Theta (CCT) type was developed as a result of a collaboration between Swedish universities (Uppsala and Linneaus) and Swedish industries. This magnet was designed to function as a replacement of the present LHC orbit corrector magnets, which are approaching their end of life due to the radiation load. As a result, the new CCT magnet was developed to be more radiation tolerant and to constitute a one-to-one replacement to the currently installed version, which is a 1 m long 70 mm double aperture dipole magnet. The final magnet, which is currently under construction, will be tested at FREIA laboratory at Uppsala University and generate a magnetic field of 3.3 T and an integrated field of 2.8 Tm at about 85 A. To examine the magnet quench behavior and to identify a suitable quench protection system, the 3D electro-magnetic and thermal behavior of the coil was modeled using the RAT-Raccoon software. Based on the simulation results, a Metrosil varistor was selected to protect the magnet during the test. In this article, we report the results of the numerical analysis. The magnet model is equipped with a spot heater to initialize the quench and the temperature and voltages are monitored during the avalanche effect. The simulated current decay and the hot-spot temperature are analyzed with a focus on the impact of quench-back on the magnet protection.

NATURVETENSKAP Fysik Acceleratorfysik och instrumentering hsv//swe
NATURAL SCIENCES Physical Sciences Accelerator Physics and Instrumentation hsv//eng
Superconducting magnets
Superconducting cables
Solid modeling
Magnetostatics
Resistance
Electron tubes
Varistors
Accelerator magnet
CCT
Canted-Cosine-Theta
LTS superconductor
quench simulation
Maskinteknik
Mechanical Engineering

Ahl, A.Scanditronix Magnet AB, Sweden (författare)
Almström, MatsLinnéuniversitetet,Institutionen för maskinteknik (MT)(Swepub:lnu)maalaa (författare)
Canale, M.CERN, Switzerland (författare)
Dugic, Izudin,1962-Linnéuniversitetet,Institutionen för maskinteknik (MT)(Swepub:lnu)idumtk (författare)
Emilsson, F.Rydverken AB, Sweden;WST Vattenskärning, Sweden (författare)
Gentini, L.CERN, Switzerland (författare)
Haralanova, ValentinaLinnéuniversitetet,Institutionen för maskinteknik (MT)(Swepub:lnu)vahaaa (författare)
Johansson, M.WST Vattenskärning, Sweden (författare)
Karlsson, GustavLinnéuniversitetet,Institutionen för maskinteknik (MT)(Swepub:lnu)gukaaa (författare)
Kennborn, B.Scanditronix Magnet AB, Sweden (författare)
Kirby, G.CERN, Switzerland (författare)
Kovacikova, JankaLinnéuniversitetet,Institutionen för maskinteknik (MT)(Swepub:lnu)jakoaa (författare)
Lindström, J.Rydverken AB, Sweden;WST Vattenskärning, Sweden (författare)
Pepitone, K.Uppsala University, Sweden (författare)
Pettersson, M.Uppsala University, Sweden (författare)
Olsson, A.Scanditronix Magnet AB, Sweden (författare)
Ruber, R.Uppsala University, Sweden (författare)
Santiago Kern, RocioUppsala University, Sweden (författare)
Svanberg, C.Uppsala University, Sweden (författare)
Olvegard, M.Uppsala University, Sweden (författare)
Uppsala University, SwedenScanditronix Magnet AB, Sweden (creator_code:org_t)

Ingår i:IEEE transactions on applied superconductivity (Print): IEEE34:51051-82231558-2515

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