Conceptual study of a straight field line mirror hybrid reactor
A hybrid reactor based on the straight field line mirror (SFLM) with magnetic expanders at the ends is proposed as a compact device for transmutation of nuclear waste and power production. Compared to a fusion reactor, plasma confinement demands can be relaxed if there is a strong energy multiplic...
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| Date: | 2011 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2011
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| Series: | Вопросы атомной науки и техники |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/90591 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Conceptual study of a straight field line mirror hybrid reactor / O. Ågren, V.E. Moiseenko, K. Noack, A. Hagnestål // Вопросы атомной науки и техники. — 2011. — № 1. — С. 3-7. — Бібліогр.: 16 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | A hybrid reactor based on the straight field line mirror (SFLM) with magnetic expanders at the ends is proposed as a
compact device for transmutation of nuclear waste and power production. Compared to a fusion reactor, plasma
confinement demands can be relaxed if there is a strong energy multiplication by the fission reactions, i.e.
Qr=Pfission/Pfusion>>1. The values of Qr is primarily restricted by fission reactor safety requirements. For the SFLM,
computations suggest that values of Qr ranging up to 150 are consistent with reactor safety. In a mirror hybrid device
with Qr >100, the lower bound on the electron temperature for power production can then be estimated to be around
400 eV, which may be achievable for a mirror machine. The SFLM with its quadrupolar stabilizing fields does not rely
on plasma flow into the expanders for MHD stability, and a scenario with plasma density depletion in the expanders is a
possibility to increase the electron temperature. Efficient power production is predicted with a fusion Q = 0.15 and an
electron temperature around 500 eV. A fusion power of 10 MW could then be amplified to 1.5 GW fission power in a
compact 25 m long hybrid mirror machine. Beneficial features are that all sensitive equipment can be located outside the
neutron rich region and a steady state power production seems possible. Self circulation of the lead coolant, which is useful
for heat removal if coolant pumps cease to operate, could be arranged by orienting the magnetic axis vertically. Results
from studies on plasma equilibrium and stability, coil designing, RF heating and neutron computations are presented. |
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