| Article | |
| Report number | arXiv:1907.10382 |
| Title | Fast high-power thyristors triggered in impact-ionization wave mode |
| Author(s) | Gusev, A. (Novosibirsk, IYF ; Urals State U.) ; Lyubutin, S. (Novosibirsk, IYF) ; Patrakov, V. (Novosibirsk, IYF ; Urals State U.) ; Rukin, S. (Novosibirsk, IYF) ; Slovikovsky, B. (Novosibirsk, IYF) ; Barnes, M.J. (CERN) ; Kramer, T. (CERN) ; Senaj, V. (CERN) |
| Publication | 2019-10-07 |
| Imprint | 2019-07-24 |
| Number of pages | 14 |
| Note | 14 pages, 11 figures, 15 references |
| In: | JINST 14 (2019) P10006 |
| DOI | 10.1088/1748-0221/14/10/P10006 |
| Subject category | physics.acc-ph ; Accelerators and Storage Rings ; physics.ins-det ; Detectors and Experimental Techniques |
| Abstract | GTO-like thyristors 5STH-2045H0002 (4.5 kV, 18 kA/us) developed by ABB semiconductors are currently used at CERN in LHC Beam Dumping System (LBDS): high-power switches with high dI/dt capability and low turn-on delay time are required. Implementation of the impact-ionization triggering in GTO-like thyristor enhances its switching performance and gives new information about semiconductor physics. In this work thyristors of 5STH-2045H0002 type triggered in impact-ionization wave mode are investigated. An SOS generator providing a dV/dt of several kV/ns was used as a source of triggering pulses. A thyristor switching time of approximately 200-300 ps was observed. Maximum discharge parameters were obtained for two series connected thyristors at a charging voltage of 10 kV, and a capacitor stored energy of 300 J: peak current of 43 kA, dI/dt of 120 kA/us (limited by the discharge circuit), FWHM of 1.5 us. A single thyristor was tested in the repetitive mode at the charging voltage of 4.2 kV, and the stored energy of 18 J: peak current of 5.5 kA, dI/dt of 40 kA/us, FWHM of 1.5 us were obtained. No thyristor degradation was observed after more than one million pulses at a PRF up to 1 kHz in burst mode. Thyristor recovery time was 250 us. The switching efficiency was up to 98% depending on dV/dt and stored energy. |
| Copyright/License | publication: © 2019-2024 CERN (License: CC-BY-3.0) preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Registre creat el 2019-11-01, darrera modificació el 2020-02-01