Status of the GDT Experiment and Future Plans

Journal Article · Sat Jan 15 04:00:00 EST 2005 · Fusion Science and Technology

OSTI ID:20849783

Abdrashitov, A; Abdrashitov, G; Anikeev, A ^[1]

---

1. and others

In the recent experiments, on-axis transverse beta exceeding 0.4 in the fast ion turning points near the end mirrors has been achieved in the GDT experiment with 4 MW injection of 15-17 keV deuterium neutral beams at the center of the device. Neither enhanced transverse losses of the plasma nor anomalies in the fast ion scattering and slowing down were observed. The measured beta value is close to that needed in the versions of the GDT-based 14 MeV neutron source. At the same time, the electron temperature for given injection power and pulse duration is limited to 100-130eV. Its further increase is planned after upgrade of the injection system and increase of the magnetic field at the center of device up to 0.3T. Upgrade of the injection system assumes that neutral beam power incident on to the plasma will be increased up to 9-10 MW and pulse duration is extended from 1.2 to 5 ms. According to the results of numerical simulations, for the extended pulse duration a plasma steady state will be achieved with electron temperature of 250-320 eV, depending upon the assumptions on the transverse energy loss rate. Future experiments on the GDT-upgrade are discussed in the paper.

• OSTI ID: 20849783
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 1T Vol. 47; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTERIZED SIMULATION
DEUTERIUM
ELECTRON TEMPERATURE
EV RANGE
IONS
KEV RANGE
MAGNETIC FIELDS
MAGNETIC MIRRORS
MEV RANGE
NEUTRON SOURCES
PLASMA
PLASMA SIMULATION
PULSES
SCATTERING
SLOWING-DOWN
STEADY-STATE CONDITIONS
TRANSVERSE ENERGY