Tungsten erosion during L-mode discharges in the DIII-D SAS-VW divertor by G. Sinclair, T. Abrams, M.S. Parsons, S.H. Messer, J. Mateja, S.A. Zamperini, D.M. Thomas, J.D. Elder, R. Maurizio, T. Odstrcil, R.S. Wilcox, J.L. Herfindal, D.D. Truong, J.G. Watkins, A.G. McLean, D.L. Rudakov, J. Ren, D. Donovan

Subjects: Get full text

Investigation of divertor heat flux characteristics under the influence of resonant magnetic perturbations on EAST by Ruirong Liang, Xianzu Gong, Bin Zhang, Manni Jia, Hua Yang, Qun Ma, Youwen Sun, Zhendong Yang, Yunchan Hu, Zuhao Wang, Wei Wang, Yutong Guo, Jinwen Song, Jinping Qian, the EAST Team

Subjects: “…tokamak…”
Get full text

The design and implementation of automated maintenance system for the first-wall based on dual-arm manipulator by Ke Wu, Jun Zhang, Yong Cheng, Qingxi Yang, Hongtao Pan, Tao Wang, Aiming Liu, Hao Han

Subjects: “…Tokamak device…”
Get full text

Transport and profile broadening in the private flux region of ASDEX upgrade and role for power exhaust by D. Brida, G. Grenfell, O. Grover, D. Silvagni, M. Faitsch, U. Stroth, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team

“…Understanding the transport processes that determine the plasma profile widths in the scrape-off layer (SOL) and divertor region of tokamaks is crucial for successful power and particle exhaust management in future devices. …”
Get full text

Comparison of plasma start-up with high Z and low Z first wall in WEST by C. Guillemaut, K. Afonin, G. Bodner, J. Bucalossi, Y. Corre, P. Devynck, A. Diallo, M. Diez, N. Fedorczak, A. Gallo, B. Guillermin, V. Lapleigne, R. Lunsford, P. Maget, J. Morales, Ph. Moreau, the WEST Team, the EUROfusion Tokamak Exploitation Team

“…In this context, the present work focuses on the correlations between first wall impurity sources and total radiated power during plasma start-up in the tungsten (W) Environment in Steady-state Tokamak (WEST). The objective is to highlight experimental indications for a preferable combination of start-up plasma scenario and first wall materials. …”
Get full text

The quasi-continuous exhaust regime in JET by M. Faitsch, M. Dunne, E. Lerche, P. Lomas, I. Balboa, P. Bilkova, P. Bohm, A. Kappatou, D. Kos, B. Labit, S. Menmuir, O. Sauter, S. Silburn, E.R. Solano, H.J. Sun, A. Tookey, E. Viezzer, U. Stroth, JET Contributors, the EUROfusion Tokamak Exploitation Team

“…Porting the QCE regime to JET strongly benefited from the experimental and modelling efforts at the medium sized tokamaks ASDEX Upgrade and TCV. Using the physics picture developed from the ASDEX Upgrade experimental results, the route to the QCE regime in JET reported here is following closely the approach that was successful in ASDEX Upgrade. …”
Get full text

Doubling fusion power with volumetric optimization in magnetic confinement fusion devices by J. F. Parisi, J. W. Berkery, A. Sladkomedova, S. Guizzo, M. R. Hardman, J. R. Ball, A. O. Nelson, S. M. Kaye, M. Anastopoulos-Tzanis, S. A. M. McNamara, J. Dominski, S. Janhunen, M. Romanelli, D. Dickinson, A. Diallo, A. Dnestrovskii, W. Guttenfelder, C. Hansen, O. Myatra, H. R. Wilson

“…A technique, volumetric power optimization, is presented for enhancing the power output of magnetic confinement fusion devices. Applied to a tokamak, this approach involves shifting the burning plasma region to a larger plasma volume while introducing minimal perturbations to the plasma boundary shape. …”
Get full text

Cross-code comparison of the edge codes SOLPS-ITER, SOLEDGE2D and UEDGE in modelling a high-power neon-seeded scenario in the DTT by M. Moscheni, M. Wigram, H. Wu, C. Meineri, C. Carati, E. De Marchi, M. Greenwald, P. Innocente, B. LaBombard, F. Subba, R. Zanino

“…In this work, we cross-compare the state-of-the-art edge plasma codes SOLPS-ITER, SOLEDGE2D, and UEDGE in a reactor-relevant neon-seeded Divertor Tokamak Test scenario at nominal power, extending the simplified test-bed of Moscheni et al (2022 Nucl. …”
Get full text

Development of a Remote Handling Robot for the Maintenance of an ITER-Like D-Shaped Vessel by Peihua Chen, Qixin Cao

“…Robotic operation is one of the major challenges in the remote maintenance of ITER vacuum vessel (VV) and future fusion reactors as inner operations of Tokamak have to be done by robots due to the internal adverse conditions. …”
Get full text

Nonlinear excitation of energetic particle driven geodesic acoustic mode by resonance overlap with Alfvén instability in ASDEX Upgrade by Hao Wang, Philipp Lauber, Yasushi Todo, Yasuhiro Suzuki, Hanzheng Li, Malik Idouakass, Jialei Wang, Panith Adulsiriswad, The ASDEX Upgrade Team

“…Abstract The Alfvén instability nonlinearly excited the energetic-particle-driven geodesic acoustic mode on the ASDEX-Upgrade tokamak, as demonstrated experimentally. The mechanism of the energetic-particle-driven geodesic acoustic mode excitation and the mode nonlinear evolution is not yet fully understood. …”
Get full text

Estimation of neutral beam injector power transferred to KSTAR plasmas by Jong-Gu Kwak, J.H. Jeong, S.C. Hong

“…In a long pulse operation, the water coolant temperature is at the steady state condition in longer pulse more than 20s and the coupled neutral beam power to KSTAR plasma during the tokamak experiments is rechecked by using water flow calorimetric method after the experiment. …”
Get full text

Coil optimization methods for a planar coil stellarator by T.G. Kruger, M.F. Martin, D.A. Gates, the Thea Energy Team

“…The plasma encircling coils provide the mean magnetic field and linking current, similar to the toroidal field (TF) coils in a tokamak. The plasma encircling coils can be rotationally symmetric TF-like coils and produce a $B\propto 1/R$ field, but optimizing their placement, tilt, and shaping can substantially reduce the magnetic field error. …”
Get full text

Multiobjective Core Reloading Pattern Optimization of PARR-1 Using Modified Genetic Algorithm Coupled with Monte Carlo Methods by Nadeem Shaukat, Ammar Ahmad, Bukhtiar Mohsin, Rustam Khan, Salah Ud-Din Khan, Shahab Ud-Din Khan

Get full text

Development of Vacuum Vessel Design and Analysis Module for CFETR Integration Design Platform by Chen Zhu, Minyou Ye, Xufeng Liu, Shenji Wang, Shifeng Mao, Zhongwei Wang, Yi Yu

“…The integration engineering design platform aims at performing detailed engineering design for each tokamak component (e.g., breeding blanket, divertor, and vacuum vessel). …”
Get full text

Effect of plasma beta on the nonlinear evolution of m/n = 2/1 double tearing mode in high Lundquist number regime by Dingzong Zhang, Zhaoqing Wu, Jun Ma, Wenfeng Guo, Yanqing Huang, Hongbo Liu

“…Furthermore, a preliminary case study shows that the tokamak plasma rotation shear has a significant impact on plasmoid dynamic.…”
Get full text

A new continuous optimization method of standardized cubic permanent magnets for stellarators by Xiangyu Zhang, Dehong Chen, Guosheng Xu, Zhiyuan Lu, Caoxiang Zhu, Liang Chen, Minyou Ye, Baonian Wan

“…Stellarator configurations can be realized using permanent magnets in combination with tokamak-like planar coils. From the perspective of engineering feasibility and cost-effectiveness, using standardized cubic permanent magnets with a finite number of magnetization directions is particularly advantageous. …”
Get full text

Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR by Xishuo Wei, Javier H Nicolau, Gyungjin Choi, Zhihong Lin, Seong-Moo Yang, SangKyeun Kim, WooChang Lee, Chen Zhao, Tyler Cote, JongKyu Park, Dmitri Orlov

“…Gyrokinetic simulations are utilized to study effects of magnetic islands (MIs) on the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with resonant magnetic perturbations. Simulations show that the transport is controlled by the nonlinear interactions between the ITG turbulence and self-generated vortex flows and zonal flows, leading to an anisotropic structure of fluctuation and transport on the poloidal plane and in the toroidal direction. …”
Get full text

Fast electrons produced by lower hybrid wave and effects on plasma–wall interactions by Hailong Lu, Nong Xiang, Zehua Qian, Hua Yang, Miaohui Li, Manni Jia, Gen Li, Zechen Wang, Changhao Deng, Jinjin Lu, Jiamin Long

“…Lower hybrid wave (LHW) current drive plays a crucial role in sustaining steady-state (SS) discharges on the Experimental Advanced Superconducting Tokamak (EAST). Hotspots frequently form on the wave antenna and guard limiters during SS operations. …”
Get full text

Infernal instabilities in negative-triangularity plasmas with negative central shear by X.M. Zhang, L. Li, Y.Q. Liu, Z.Y. Dong, J.W. Li, Y. Liang, F.C. Zhong

“…A systematic numerical investigation is carried out to understand magnetohydrodynamic stability of the ideal infernal-kink instability in tokamak plasmas with both negative triangularity (neg-D) shaping and negative central shear for the equilibrium safety factor profile. …”
Get full text

Amorphization and siliconization of silicon carbide as a first wall material by Aritra De, Jerome Guterl, Zachary Bergstrom, Tyler Abrams, Gregory Sinclair, John David Elder, Dmitry Rudakov

“…Gross and net Si erosion rates from SiC surfaces in contact with a well-diagnosed L-mode plasma in the DIII-D tokamak have been simulated and the surface concentrations of impurities have been tracked as a function of time. …”
Get full text