Results 1 to 10 of about 3,064,989 (321)

Status of the ITER ECRH&CD control system development [PDF]

EPJ Web of Conferences, 2023
The ITER ECRH&CD system is designed to inject 20 MW of millimetre-wave at 170 GHz into the vacuum vessel. The system is composed of many sub-systems, namely High-Voltage Power Supplies (HVPS), Gyrotrons, Transmission Lines (TL), Ex-vessel Waveguides (EW),
Carannante Giuseppe, Cavinato Mario, Cindric Katarina, Ferrari Martino, Ferrò Giuseppe, Cabrita Neto Andre, Sartori Filippo   +6 more
doaj   +1 more source

Differentiating multi-MeV, multi-ion spectra with CR-39 solid-state nuclear track detectors

Scientific Reports, 2023
The development of high intensity petawatt lasers has created new possibilities for ion acceleration and nuclear fusion using solid targets. In such laser-matter interaction, multiple ion species are accelerated with broad spectra up to hundreds of MeV ...
M. S. Schollmeier, J. J. Bekx, J. Hartmann, E. Schork, M. Speicher, A. F. Brodersen, A. Fazzini, P. Fischer, E. Gaul, B. Gonzalez-Izquierdo, M. M. Günther, A. K. Härle, R. Hollinger, K. Kenney, J. Park, D. E. Rivas, V. Scutelnic, Z. Shpilman, S. Wang, J. J. Rocca, G. Korn   +20 more
doaj   +1 more source

Preceding propagation of turbulence pulses at avalanche events in a magnetically confined plasma

Scientific Reports, 2022
The preceding propagation of turbulence pulses has been observed for the first time in heat avalanche events during the collapse of the electron internal transport barrier (e-ITB) in the Large Helical Device.
N. Kenmochi, K. Ida, T. Tokuzawa, R. Yasuhara, H. Funaba, H. Uehara, D. J. Den Hartog, I. Yamada, M. Yoshinuma, Y. Takemura, H. Igami   +10 more
doaj   +1 more source

Experimental determination of the cooling efficiency of a high-temperature surface by a pneumatic nozzle [PDF]

E3S Web of Conferences, 2023
The cooling of surfaces that perceive high heat fluxes (more than 7 MW/m2) at the current pace of development of the energy sector will become one of the main problems of the near future. In this paper, as one of the options for effective cooling of high-
Demidov Andrey Sergeevich, Zakharenkov Alexander Valentinovich, Komov Alexander Timofeevich, Dedov Alexey Victorovich   +3 more
doaj   +1 more source

Measurement of disruption forces in JET using fiber-optic sensors [PDF]

, 2009
Monitoring the forces induced on the vacuum vessel when a disruption occurs is essential for the protection of the machine. Since divertor coils have been installed in JET, during disruptions a significant difference between the forces measured on the ...
Fusiek, G., Hotchin, S., Ivings, E., Johnson, M. F., Lescure, C., Niewczas, P., Riccardo, V., Walsh, M., West, A.   +8 more
core   +1 more source

Overview of the ICRF heating system in SPARC [PDF]

EPJ Web of Conferences
Ion Cyclotron Range of Frequencies (ICRF) heating is a critical system for the SPARC mission of demonstrating net positive fusion gain. In the first campaign, 20 MW of installed power at 120 MHz will be supplied to 10 four-strap antennas, arranged in ...
Usoltseva Maria, Garrett Michael, Johnson Erik, Matthews Peter, Migliore Christina, Wallace Gregory M., Wright John C.   +6 more
doaj   +1 more source

Fusion versus Breakup: Observation of Large Fusion Suppression for ^9Be + ^{208}Pb [PDF]

, 1999
Complete fusion excitation functions for $^{9}$Be + $^{208}$Pb have been measured to high precision at near barrier energies. The experimental fusion barrier distribution extracted from these data allows reliable prediction of the expected complete ...
A. C. Berriman, A. M. Stefanini, A. Mukerjee, A. Szanto de Toledo, A. Yoshida, C. H. Dasso, C. H. Dasso, C. H. Dasso, C. R. Morton, C. R. Morton, C. Signorini, C. Signorini, D. J. Hinde, G. D. Dracoulis, J. D. Bierman, J. O. Newton, J. P. Glickman, J. R. Leigh, J. S. Eck, J. Takahashi, J. X. Wei, K. Hagino, K. Hagino, M. Beckerman, M. Dasgupta, M. Dasgupta, M. J. Martin,, M. S. Hussein, M. S. Hussein, M. S. Hussein, Minfang Yeh, N. Carlin, N. Rowley, N. Takigawa, N. Takigawa, P. G. Hansen, P. R. S. Gomes, R. Bass, R. D. Butt, R. M. Anjos, V. Fekou-Youimbi   +40 more
core   +4 more sources

DIII-D High Field Side Lower Hybrid Current Drive Experiment Overview [PDF]

EPJ Web of Conferences
In preparation for high field side lower hybrid current drive (HFS LHCD) experiments in DIII-D, the HFS LHCD was to be commissioned and physics experiments commence once the system operated up to 300 kW for 0.5 s.
Wukitch Stephen J., Cengher Mirela, Leppink Evan, Lin Yijun, Pinsker Robert I., Rutherford Grant, Seltzman Andrew, Bykov Igor, Doody Jeffrey, Garcia Ivan, Gould Malcolm, Leccacorvi Rick, Murphy Christopher, Nagy Alexander, Pierson Samuel, Ridzon James, Teixeira Kyle, Vieira Rui   +17 more
doaj   +1 more source

Long-pulse Plasma Discharges by Upgraded ECH System in the LHD

EPJ Web of Conferences, 2015
Until 2009, three high-power, over 1MW each, 77GHz gyrotrons have been installed and applied to the LHD experiment. In addition, a 154GHz gyrotron of 1MW was installed in 2012. The 77GHz gyrotrons suffer gradual increases of internal pressure during long-
Yoshimura Y., Kasahara H., Nagasaki K., Tokitani M., Ashikawa N., Ueda Y., Ito S., Kubo S., Shimozuma T., Igami H., Takahashi H., Nishiura M., Kobayashi S., Mizuno Y., Okada K., Ogasawara S., Makino R., Yamada I., Tokuzawa T., Tanaka K., Mutoh T., Yamada H.   +21 more
doaj   +1 more source

Synaptic proteins promote calcium-triggered fast transition from point contact to full fusion. [PDF]

, 2012
The molecular underpinnings of synaptic vesicle fusion for fast neurotransmitter release are still unclear. Here, we used a single vesicle-vesicle system with reconstituted SNARE and synaptotagmin-1 proteoliposomes to decipher the temporal sequence of ...
Brunger, Axel T, Chu, Steven, Cipriano, Daniel J, Diao, Jiajie, Grob, Patricia, Kyoung, Minjoung, Nguyen, Amie, Nogales, Eva, Padolina, Mark, Shah, Ankita, Shah, Sachi, Srivastava, Ankita, Vrljic, Marija, Zhang, Yunxiang   +13 more
core   +1 more source