TITLE

Korea superconducting tokamak advanced research vacuum and gas puffing system

AUTHOR(S)
Seo, Seong-Heon; Kim, H. T.; Kim, K. P.; Kim, Y. O.; Kim, W. C.; Yang, H. L.; Oh, Y. K.; Jeong, Seung Ho
PUB. DATE
November 2008
SOURCE
Review of Scientific Instruments;Nov2008, Vol. 79 Issue 11, p116103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A piezoelectric valve, which has a flow rate of about 463 mbar l/s, has been installed to fuel the Korea Superconducting Tokamak Advanced Research (KSTAR) tokamak. The valve flow rate is in situ calibrated by analyzing the pressure rise curve while fueling the vessel at a constant rate. The calibration method and results are presented. In addition to the flow rate, other vacuum system parameters, such as the pumping speed and the vessel volume, were experimentally obtained. Based on these measurements, a KSTAR vacuum system simulator was developed to calculate the valve drive signal to obtain a programmed pressure trace. An arbitrarily shaped pressure trace was successfully controlled in KSTAR with this hardware and software system.
ACCESSION #
35886460

 

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