Plasma performance and operational space without ELMs in DIII-D

C Paz-Soldan, DIII-D Team - Plasma Physics and Controlled …, 2021 - iopscience.iop.org
Abstract A database of DIII-D plasmas without edge-localized modes (ELMs) compares the
operating space and plasma performance of stationary no-ELM regimes found in …

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 …

Shattered pellet injection experiments at JET in support of the ITER disruption mitigation system design

S Jachmich, U Kruezi, M Lehnen, M Baruzzo… - Nuclear …, 2021 - iopscience.iop.org
A series of experiments have been executed at JET to assess the efficacy of the newly
installed shattered pellet injection (SPI) system in mitigating the effects of disruptions. Issues …

Modeling the complete prevention of disruption-generated runaway electron beam formation with a passive 3D coil in SPARC

RA Tinguely, VA Izzo, DT Garnier, A Sundström… - Nuclear …, 2021 - iopscience.iop.org
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 …

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 …

Design of passive and structural conductors for tokamaks using thin-wall eddy current modeling

AF Battey, C Hansen, D Garnier, D Weisberg… - Nuclear …, 2023 - iopscience.iop.org
A new three-dimensional electromagnetic modeling tool (ThinCurr) has been developed
using the existing PSI-Tet finite-element code in support of conducting structure design work …

MARS-F modeling of post-disruption runaway beam loss by magnetohydrodynamic instabilities in DIII-D

YQ Liu, PB Parks, C Paz-Soldan, C Kim, LL Lao - Nuclear Fusion, 2019 - iopscience.iop.org
A drift orbit model for relativistic test electrons has been incorporated into the MARS-F code
(Liu et al 2000 Phys. Plasmas 7 3681), in order to study the runaway electron (RE) behavior …

On the use of error field correction coils in JET

L Piron, M Baruzzo, L Baylor, CD Challis… - Fusion Engineering and …, 2023 - Elsevier
This work describes the usage of Error Field Correction Coil (EFCC) system [Barlow I. et al.
2001 Fusion Eng. Des. 58–59 189], which is a set of 4 coils located external to the vessel of …

Trends in runaway electron plateau partial recombination by massive H2 or D2 injection in DIII-D and JET and first extrapolations to ITER and SPARC

EM Hollmann, L Baylor, A Boboc, P Carvalho… - Nuclear …, 2023 - iopscience.iop.org
Experimental trends in thermal plasma partial recombination resulting from massive D2
injection into high-Z (Ar) containing runaway electron (RE) plateaus in DIII-D and JET are …

Runaway electron beam dynamics at low plasma density in DIII-D: energy distribution, current profile, and internal instability

A Lvovskiy, C Paz-Soldan, NW Eidietis… - Nuclear …, 2020 - iopscience.iop.org
Parameters of the post-disruption runaway electron (RE) beam in the low density
background plasma achieved after secondary deuterium injection are investigated in DIII-D …