Physics of runaway electrons in tokamaks
BN Breizman, P Aleynikov, EM Hollmann… - Nuclear …, 2019 - iopscience.iop.org
Of all electrons, runaway electrons have long been recognized in the fusion community as a
distinctive population. They now attract special attention as a part of ITER mission …
distinctive population. They now attract special attention as a part of ITER mission …
Recent progress in shattered pellet injection technology in support of the ITER disruption mitigation system
Shattered pellet injection (SPI) has been selected as the baseline technology for the
disruption mitigation (DM) system for ITER. Typical SPI utilizes cryogenic cooling to …
disruption mitigation (DM) system for ITER. Typical SPI utilizes cryogenic cooling to …
Demonstration of safe termination of megaampere relativistic electron beams in tokamaks
C Reux, C Paz-Soldan, P Aleynikov, V Bandaru… - Physical Review Letters, 2021 - APS
For the first time it is experimentally demonstrated on the JET tokamak that a combination of
a low impurity concentration bulk plasma and large magnetohydrodynamic instabilities is …
a low impurity concentration bulk plasma and large magnetohydrodynamic instabilities is …
Modeling the complete prevention of disruption-generated runaway electron beam formation with a passive 3D coil in SPARC
The potential formation of multi-mega-ampere beams of relativistic'runaway'electrons (REs)
during sudden terminations of tokamak plasmas poses a significant challenge to the …
during sudden terminations of tokamak plasmas poses a significant challenge to the …
A novel path to runaway electron mitigation via deuterium injection and current-driven MHD instability
C Paz-Soldan, C Reux, K Aleynikova… - Nuclear …, 2021 - iopscience.iop.org
Relativistic electron (RE) beams at high current density (low safety factor, qa) yet very low
free-electron density accessed with D 2 secondary injection in the DIII-D and JET tokamak …
free-electron density accessed with D 2 secondary injection in the DIII-D and JET tokamak …
Runaway electron deconfinement in SPARC and DIII-D by a passive 3D coil
The operation of a 3D coil—passively driven by the current quench (CQ) loop voltage—for
the deconfinement of runaway electrons (REs) is modeled for disruption scenarios in the …
the deconfinement of runaway electrons (REs) is modeled for disruption scenarios in the …
[HTML][HTML] Design of the shattered pellet injection system for ASDEX Upgrade
M Dibon, P de Marné, G Papp, I Vinyar… - Review of Scientific …, 2023 - pubs.aip.org
A new shattered pellet injection system was designed and built to perform disruption
mitigation experiments on ASDEX Upgrade. The system can inject pellets with diameters of …
mitigation experiments on ASDEX Upgrade. The system can inject pellets with diameters of …
Kink instabilities of the post-disruption runaway electron beam at low safety factor
Realization of a high-current (approaching 1 MA) post-disruption runaway electron (RE)
beam in DIII-D yields controlled access to very low edge safety factor (qa) conditions. This …
beam in DIII-D yields controlled access to very low edge safety factor (qa) conditions. This …
Radiation asymmetry and MHD destabilization during the thermal quench after impurity shattered pellet injection
The radiation response and the MHD destabilization during the thermal quench after a
mixed species shattered pellet injection with impurity species neon and argon are …
mixed species shattered pellet injection with impurity species neon and argon are …
The role of kinetic instabilities in formation of the runaway electron current after argon injection in DIII-D
Kinetic instabilities in the MHz range driven by runaway electrons (REs) have been
observed for the first time during the current quench (CQ) in disruptions triggered by massive …
observed for the first time during the current quench (CQ) in disruptions triggered by massive …