Supercritical Helium Flow Calorimetry at the MIT Superconducting Magnet Test Facility
This paper presents recent upgrades to the supercritical helium circuit at the MIT Superconducting Magnet Test Facility to support the characterization of REBCO-based cable magnets. In particular, we discuss the design, calibration and installation of dedicated mass flow meters for every conductor l...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2025-08, Vol.35 (5), p.1-6 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Michael, Philip C. Golfinopoulos, Theodore Kaplan, Alexey Schweiger, Shane Garcia, Ivan Watterson, Amy Chamberlain, Sarah Nash, Daniel Craighill, Christopher Sanabria, Charlie Laamanen, Eric McCormack, Colin |
| description | This paper presents recent upgrades to the supercritical helium circuit at the MIT Superconducting Magnet Test Facility to support the characterization of REBCO-based cable magnets. In particular, we discuss the design, calibration and installation of dedicated mass flow meters for every conductor layer in a multi-layer magnet. The design and manufacture of dedicated calibration heaters for each flow path is also described. When used in concert with inlet and outlet pressure and temperature sensors, these upgrades allow us to characterize the hydraulic response of each conductor layer. When deployed as a helium flow calorimeter, the configuration provides a cross-check of DC power dissipation in layer-to-layer conductor joints, facilitates the determination of AC loss heating during swept current and exponential current dump discharges, and permits a more accurate assessment of the energy dissipation within a magnet during quenching. Representative examples for each type of measurement are shown. |
| doi_str_mv | 10.1109/TASC.2024.3508664 |
| format | Article |
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| subjects | Alternating current Calibration Calorimetry Coils Conductors Cryogenics Energy dissipation Heating systems Helium helium flow calorimetry Magnets Mass flowmeters Multilayers Orifices super- conducting magnet test facility Superconducting magnets Superconductivity Temperature measurement Temperature sensors Test facilities Toroidal magnetic fields |
| title | Supercritical Helium Flow Calorimetry at the MIT Superconducting Magnet Test Facility |
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