Fast Time Response Electromagnetic Disruption Mitigation Concept

Raman, R.; Jarboe, T.; Jernigan, Thomas C.; Menard, J.; Gerhardt, S. P.; Ono, M.; Baylor, Larry R.; Lay, W. S.

doi:10.13182/FST14-916

Title: Fast Time Response Electromagnetic Disruption Mitigation Concept

Journal Article · Mon Sep 28 00:00:00 EDT 2015 · Fusion Science and Technology

DOI:https://doi.org/10.13182/FST14-916· OSTI ID:1335330

Raman, R. ^[1]; Jarboe, T. ^[1]; Jernigan, Thomas C. ^[2]; Menard, J. ^[3]; Gerhardt, S. P. ^[3]; Ono, M. ^[3]; Baylor, Larry R. ^[2]; Lay, W. S. ^[1]

Univ. of Washington, Seattle, WA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

An important and urgent issue for ITER is predicting and controlling disruptions. Tokamaks and spherical tokamaks have the potential to disrupt. Methods to rapidly quench the discharge after an impending disruption is detected are essential to protect the vessel and internal components. The warning time for the onset of some disruptions in tokamaks could be <10 ms, which poses stringent requirements on the disruption mitigation system for reactor systems. In this proposed method, a cylindrical boron nitride projectile containing a radiative payload composed of boron, boron nitride, or beryllium particulate matter and weighing similar to 15 g is accelerated to velocities on the order of 1 to 2 km/s in <2 ms in a linear rail gun accelerator. A partially fragmented capsule is then injected into the tokamak discharge in the 3- to 6-ms timescale, where the radiative payload is dispersed. The device referred to as an electromagnetic particle injector has the potential to meet the short warning timescales for which a reactor disruption mitigation system must be built. The system is fully electromagnetic, with no mechanical moving parts, which ensures high reliability after a period of long standby.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1335330

Journal Information:: Fusion Science and Technology, Vol. 68, Issue 4; ISSN 1536-1055

Publisher:: American Nuclear SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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Cited By (2)

Modeling of Ablatant Deposition from Electromagnetically Driven Radiative Pellets for Disruption Mitigation Studies Lunsford, Robert; Raman, Roger; Brooks, A. Fusion Science and Technology, Vol. 75, Issue 8 https://doi.org/10.1080/15361055.2019.1629246	journal	July 2019
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