beam injection
Influence of Neutral Beam Injection Direction and Magnetic Axis Position on Fast Ion Distribution Function in Large Helical Device
... neutral beam injection (NBI) is widely used for fast particle heating and is considered to be a heating mech- anism in future fusion devices as well, it is important to study how the direction of NB ...
5
Electron density measurement under the influence of auroral precipitation and electron beam injection during the DELTA campaign
... electron beam injection. The enhanced ionization due to the electron beam experiment was too high to be determined by means of the detection of the UHR (Upper Hybrid Resonance) ...
8
Simulation Study of Neutral Beam Injection Heating in the HSX Plasma
... Neutral Beam Injection (NBI) heating efficiency for the Helically Symmetric Experiment (HSX) plasma is studied by applying two simulation codes: HFREYA and ...the beam ions and to evaluate the heat ...
5
Analytic Representation for Parallel Flow of Hot Ions Produced by Tangential Neutral Beam Injection
... A neutral beam injection (NBI) system is key equip- ment for a fusion device. One of the most important roles for the system is to heat plasma to a high temperature enough for fusion. Another important role ...
5
Escaping Ion Measurement with High Time Resolution during Bursting Modes Induced by Neutral Beam Injection on CHS
... The third new observation is the gyroradius variation of the primary spot around χ ∼131 degrees. The time scale of this gyroradius fluctuation is less than 0.4 ms, but is still slow compared to the gate width of the ...
8
Development of a High Energy Hydrogen Beam Injection System for Divertor Plasma Simulation Experiments on the DT-ALPHA Device
... ion beam injection ...ion beam transport system of the DT-ALPHA ...ion beam to confirm the results of the SIMION ...ion beam differs from that obtained from a theoretical calculation, ...
5
A New Method of Measuring the Magnetic Field in Hot Plasmas Using Helium Neutral Beam Injection
... neutral beam injection. The injected He beam is ionized by collisions with field electrons, and the ionized He beam atoms emit line radiation during their gyromotion with their rotational axis ...
9
Ion Heating Experiments Using Perpendicular Neutral Beam Injection in the Large Helical Device
... the beam injector, and the total port-through power was upgraded to 6 MW in ...the beam operation parameters such as pulse timing, beam energy, and beam ...the beam species is hydrogen. ...
5
Interpretation of suprathermal emission at deuteron cyclotron harmonics from deuterium plasmas heated by neutral beam injection in the KSTAR tokamak
... with a range of pitch angles, and find that some of these lead to orbits that traverse the edge region while remaining confined. The results of some of these calculations are shown in Fig. 3. Each panel represents a ...
13
Investigation of the Clustering Condition for Various Gasses Ejected from a Fast Solenoid Valve for Supersonic Cluster Beam Injection
... The supersonic cluster beam (SSCB) injection method is being developed as a new fueling method for the Large Helical Devise (LHD) experiment. As a first step, cluster formation at a room temperature has ...
5
Feasibility Study of Neutral Beam Injection on Chinese First Quasi-Axisymmetric Stellarator (CFQS)
... of injection angles in 44 to 48 degrees injection ...degrees injection angle on the outer region is almost the same as that in 52 degrees injection ...the injection angle but by the ...
5
Development and Application of 3.7GHz LHCD system on HL-2A and Development of RF Heating system on HL-2M
... In the following experiments, coupling optimization in H-mode plasmas was carried out. Coupling effect of ELMs and local gas puffing at the antenna mouth was investigated. 200-500 kW LH power was successfully coupled ...
7
Two-stage laser-driven plasma acceleration with external injection for EuPRAXIA
... external injection of an RF-generated electron beam is one of the basic research directions of ...electron beam acceleration to GeV energies by a two-stage laser wakefield acceleration with external ...
6
Future Perspectives and Status of Magnetic Mirror Studies in Novosibirsk
... axial injection of high power electron beam with energy 1 MeV and current of 20 kA during 1 ms into linear device with a multi-mirror magnetic field leads to e ffi cient heating of both electron (Te upto 4 ...
5
Physics of Heliotron J Confinement
... (ECR)/neutral beam injection (NBI)/ion cyclotron range of frequencies (ICRF) heating plasmas have been made for understanding global energy confinement in connection with the international stellarator ...
6
JET Joint Undertaking report 1978. Report for the period 1 June-31 December 1978. EUR 6300 (EUR-JET-AR1)
... National Swedish Board for Energy Source Development NE 5,9,29,30,33 Netherlands v,35,36 Neutral beam heating 12,16 Neutral beam injection 16 Neutral beam injectors 16,19,20 Neutral inje[r] ...
56
Beam Dynamics Analysis of Heavy Ion Injection into the KEK Digital Accelerator
... ion beam injection into the KEK digital accelerator (DA) ...after injection, is applied across the electrostatic electrodes before injection so as to deflect the injected beam into the ...
5
RF Wave Detection with High-Frequency Magnetic Probes in LHD
... In the Large Helical Device (LHD) [1], Radio Fre- quency (RF) waves in the ion cyclotron frequency re- gion have been investigated with high-frequency magnetic probes and Ion Cyclotron Range of Frequencies (ICRF) heating ...
5
Verification of Carbon Density Profile Measurements with Charge Exchange Spectroscopy Using Hydrogen and Deuterium Neutral Beams
... Here, beam density is normalized by NBI power of each ion ...neutral beam, the central beam density de- creases significantly (by a factor of ...the beam intensity is attenuated by the plasma, ...
7
High quality electron beam acceleration by ionization injection in laser wakefields with mid-infrared dual-color lasers
... Even though theoretically high quality electron beams can be produced with our scheme, practically there may be prob- lems related to the alignments of the two laser pulses both in s- pace and time due to possible ...
5