World Scientific
Skip main navigation

Cookies Notification

We use cookies on this site to enhance your user experience. By continuing to browse the site, you consent to the use of our cookies. Learn More
×

System Upgrade on Tue, May 28th, 2024 at 2am (EDT)

Existing users will be able to log into the site and access content. However, E-commerce and registration of new users may not be available for up to 12 hours.
For online purchase, please visit us again. Contact us at customercare@wspc.com for any enquiries.
No Access

Recent progress of the 20-channel grating polychromator on EAST

    https://doi.org/10.1142/9789814340274_0032Cited by:0 (Source: Crossref)
    Previous
    Next
    Abstract:

    A 20-channel grating polychromator transferred from PPPL, has been re-built for electron cyclotron emission measurements on EAST. This instrument measures the second harmonic electron cyclotron emission from plasma with frequency range from 90 GHz to 250 GHz, which corresponds to a central magnetic field (R0=1.7 m) of 2-3.5 T. The radial resolution is around 2.5 cm. New pre-amplifiers 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 roll off frequency.