Power threshold for neutral beam current drive
نویسندگان
چکیده
منابع مشابه
Benchmarking of Neutral Beam Current Drive Codes as a Basis for the Integrated Modeling for ITER
This paper discusses the results of a benchmark study in which the predictions of numerical codes for neutral beam current drive and heating were compared using the parameters of the reference ITER steady state scenario, as a collaboration work of in the frame of the ITPA-SSO group. The models employed in the benchmarked codes for each physics related to NB heating and current drive, such as th...
متن کاملTH/P3-1 Off-axis Neutral Beam Current Drive for Advanced Scenario Development in DIII-D
Modification of the two existing DIII-D neutral beam lines is proposed to allow vertical steering to provide off-axis neutral beam current drive (NBCD) as far off-axis as half the plasma radius. New calculations indicate very good current drive with good localization off-axis as long as the toroidal magnetic field, BT, and the plasma current, Ip, are in the same direction (for a beam steered do...
متن کاملDesign Studies for a High Current Bunching System for CLIC Test Facility (CTF3) Drive Beam
A bunching system is proposed for the initial stage of CTF3 which consists of one (two) 3 GHz prebuncher(s) and one 3GHz travelling wave (TW) buncher with variable phase and group velocities. The electron beam is emitted from a 140 KV DC gun. Since the average macropulse beam current (3.5 A) at the exit of the TW buncher is rather high, inside the TW buncher one has to take the beam loading eff...
متن کاملBeam Dynamics Simulation for the Ctf3 Drive-beam Accelerator
A new CLIC Test Facility (CTF3) at CERN will serve to study the drive beam generation for the Compact Linear Collider (CLIC). CTF3 has to accelerate a 3.5A electron beam in almost fully-loaded structures. The pulse contains more than 2000 bunches, one in every second RF bucket, and has a length of more than one μs. Different options for the lattice of the drive-beam accelerator are presented, b...
متن کاملHyperthermal neutral beam etching
A pulsed beam of hyperthermal fluorine atoms with an average translational energy of 4.8 eV has been used to demonstrate anisotropic etching of Si. For 1.4 Hz operation, a room-temperature etch rate of 300 Å/min for Si~100! has been measured at a distance of 30 cm from the source. A 14% undercutting for room-temperature etching of Novolac-masked Si features was achieved under single-collision c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 1990
ISSN: 0029-5515,1741-4326
DOI: 10.1088/0029-5515/30/8/017