Simplified Analytical Formulas of Quench Dynamics

Protopopov, Alex

doi:10.1109/tasc.2014.2368142

Cited by 2 publications

(1 citation statement)

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“…One of the problems is that related tests done so far are mostly on cables alone [4], [5], [6], [7], [8] and not on operating magnets and this is especially true for Nb3Sn based data. Studying all aspects of a quench in real magnets is non-trivial and although analysis tools and simulations are ever improving [4], [9], [10], [11], [12], [13], [14], [15] experiments are still unavoidable in probing fine effects during magnet operation and transients.…”

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confidence: 99%

“Mirror” magnet experiment for quench studies, quench analysis techniques development and in support of superconducting magnet modeling

Stoynev

2020

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In order to progress on various research points related to superconducting magnets, we suggest performing series of tests with induced and natural quenches on a mirror magnet, probably using a "11 T" coil. The "mirror" is to have voltage taps instrumented on half the strands, on both coil ends. It is to be instrumented with multiple spot-heaters, of the order of ten, in designated pole-turn areas. Instrumentation is to include quench antenna array facing the inner coil surface, as well as acoustic sensors on the inner layer pole. Further, acoustic sensors at the magnet ends and an acoustic calibration transducer are to be installed. Thus, we are to test sensitivity and precision of acoustic and quench antenna (QA) array sensors, both at close proximity to the coil, and we are to test and commission acoustic onmagnet real-time "calibration". New or extended DAQ will be tested as well. In addition to diagnostic development, the purpose of the magnet experiment is to investigate current redistribution in the coil, both during quenching and in operating conditions; to assess voltage build up across strands and in the coil segments during quenching, to explore voltage signature differentiation between different type of quenches; to improve modeling of processes during quenching and for magnet design purposes. In this experiment, we expect to be able to characterize the processes during a quench in unprecedented details.

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