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Latest News
Hanford completes 20 containers of immobilized waste
The Department of Energy has announced that the Hanford Site’s Waste Treatment and Immobilization Plant (WTP) has reached a commissioning milestone, producing more than 20 stainless steel containers of immobilized low-activity radioactive waste.
Yong Liu, Erzhong Li, Bili Ling, Ang Ti, Gary Taylor
Fusion Science and Technology | Volume 59 | Number 4 | May 2011 | Pages 657-662
Technical Paper | Sixteenth Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-16) | doi.org/10.13182/FST11-A11730
Articles are hosted by Taylor and Francis Online.
A 20-channel grating polychromator transferred from Princeton Plasma Physics Laboratory has been rebuilt for electron cyclotron emission measurements on EAST. This instrument measures the second-harmonic electron cyclotron emission from plasma with frequency range from 90 to 250 GHz, which corresponds to a central magnetic field (R0 = 1.7 m) of 2 to 3.5 T on EAST. The radial resolution of this instrument is [approximately]2.5 cm, and the poloidal spot size of the quasi-optic antenna is [approximately]3 cm. New preamplifiers are made and tested, based on the electronics of GPC-II on TFTR. These amplifiers have a gain of around 520, with a 400-kHz, 3-dB rolloff. Measurement results from the 2010 EAST experimental campaign show that the intensity of this instrument is [approximately]200 mV for electron temperature of 850 eV, and the signal-to-noise ratio is [approximately]20.
