| Autor: |
Marchevsky, M, Caspi, S, Cheng, DW, Dietderich, DR, DiMarco, J, Felice, H, Ferracin, P, Godeke, A, Hafalia, AR, Joseph, J, Lizarazo, J, Roy, PK, Sabbi, G, Salmi, T, Turqueti, M, Wang, X, Prestemon, S |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Applied Superconductivity, vol 24, iss 3 |
| Popis: |
We report test results for the one meter long dipol HD3b, a block-Type accelerator quality Nb3Sn magnet built a LBNL with operational bore fields in the range of 13-15 T. Th magnet is an upgrade of the previously reported HD2 and HD3 versions, with several modifications implemented to improve conducto positioning, reduce cable "hard-way" bending radius, an strengthen electrical insulation between cables and coil parts The magnet exhibited long training behavior, but showed a goo "memory" of the trained state upon thermal cycling. Ramp-rat dependence of the quench current, field quality performance characteristics and protection heater studies were conducted. Quenc propagation velocity and quench locations were determined base on the voltage signals; quench localization was further improve using inductive quench antenna and acoustic emission sensors Short-And long-Term acoustic precursors to quenching wer observed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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