The Experts below are selected from a list of 31569 Experts worldwide ranked by ideXlab platform

A.yu. Pashkov - One of the best experts on this subject based on the ideXlab platform.

B N Kolbasov - One of the best experts on this subject based on the ideXlab platform.

Hu Chundong - One of the best experts on this subject based on the ideXlab platform.

  • Conceptual Design of Neutral Beam Injection System for EAST
    Plasma Science and Technology, 2012
    Co-Authors: Hu Chundong, Nbi Team
    Abstract:

    Neutral Beam Injection (NBI) system with two neutral Beam Injections will be constructed on the Experimental Advanced Superconducting Tokamak (EAST) in two stages for high power auxiliary plasmas heating and non-inductive current drive. Each NBI can deliver 2~4 MW Beam power with 50~80 keV Beam energy in 10~100 s pulse length. Each elements of the NBI system are presented in this contribution.

  • conceptual design of neutral Beam Injection system for east
    Plasma Science & Technology, 2012
    Co-Authors: Hu Chundong, Nbi Team
    Abstract:

    Neutral Beam Injection (NBI) system with two neutral Beam Injections will be constructed on the Experimental Advanced Superconducting Tokamak (EAST) in two stages for high power auxiliary plasmas heating and non-inductive current drive. Each NBI can deliver 2~4 MW Beam power with 50~80 keV Beam energy in 10~100 s pulse length. Each elements of the NBI system are presented in this contribution.

  • Design of Control Server Application Software for Neutral Beam Injection System
    Plasma Science & Technology, 2012
    Co-Authors: Shi Qilin, Hu Chundong, Sheng Peng, Song Shihua
    Abstract:

    For the remote control of a neutral Beam Injection (NBI) system, a software NBIcsw is developed to work on the control server. It can meet the requirements of data transmission and operation-control between the NBI measurement and control layer (MCL) and the remote monitoring layer (RML). The NBIcsw runs on a Linux system, developed with client/server (C/S) mode and multithreading technology. It is shown through application that the software is with good efficiency.

  • Simulation of neutral Beam Injection on EAST by NUBeam
    Nuclear Fusion and Plasma Physics, 2011
    Co-Authors: Wang Jinfang, Wu Bin, Hu Chundong
    Abstract:

    The role of the Injection angle(the angle between the axis of the neutral Beam Injection system and the center of the Injection window) on the neutral Beam current drive,heating efficiency and Beam shine-through power are studied with NUBeam code to explore the optimum Injection angle for the EAST NBI system.From the simulation results,under the limitation of the actual project,it is indicated that an Injection angle of 19.5° is the optimum for EAST with its typical experimental parameters.With this Injection angle,the increase of the plasma density can improve the current drive and heating efficiency and reduce the Beam shine-through power.

  • Engineering of Cryopump for Neutral Beam Injection
    Plasma Science and Technology, 2006
    Co-Authors: Xie Yuanlai, Hu Chundong, Ouyang Zheng-rong
    Abstract:

    Neutrals Beam Injection (NBI) has proven to be a very effective method for plasma heating. A set of positive-ion-based NBI system is being designed, manufactured and tested at ASIPP. The aim of this study was to ascertain the most effective cryocondensation pump structure for the hydrogen NBI system. The parameter design and mechanical design were made to determine the optimum parameters and structure of the cryocondensation pump. The lowest pressure of 7.2 ? 10?6 Pa was achieved in the vacuum chamber, which indicated that this type of liquid helium cryocondensation pump could meet the requirement of the NBI system quite well.

D. K. Kurbatov - One of the best experts on this subject based on the ideXlab platform.

J Egedal - One of the best experts on this subject based on the ideXlab platform.

  • the orbit averaged particle source from neutral Beam Injection in tokamaks
    Nuclear Fusion, 2005
    Co-Authors: J Egedal
    Abstract:

    Methods are developed for evaluation of the drift orbit averaged particle source, S, in realistic neutral Beam Injection scenarios. Finite Larmor radius (FLR) and finite orbit width effects are included providing an accurate treatment of Beam Injection geometries in both standard and spherical tokamaks. With the knowledge of S the full Beam distribution is readily obtained using well-known Fokker–Planck modelling schemes in constant of motion variables. For the considered ITER Beam Injection scenarios the analysis provides distributions which are in good agreement with equivalent distributions calculated by the TRANSP analysis code. The inclusion of FLR effects is important for fusion devices with relatively small values of the magnetic field; this is illustrated by considering the Beam Injection scenario of a spherical tokamak.