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Title: Design and Construction of the NSTX Bakeout, Cooling and Vacuum Systems

Abstract

This paper will describe the design, construction and initial operation of the NSTX bakeout, water cooling and vacuum systems. The bakeout system is designed for two modes of operation. The first mode allows heating of the first wall components to 350 degrees C while the external vessel is cooled to 150 degrees C. The second mode cools the first wall to 150 degrees C and the external vessel to 50 degrees C. The system uses a low viscosity heat transfer oil which is capable of high temperature low pressure operation. The NSTX Torus Vacuum Pumping System (TVPS) is designed to achieve a base pressure of approximately 1x10 (superscript -8) Torr and to evacuate the plasma fuel gas loads in less than 5 minutes between discharges. The vacuum pumping system is capable of a pumping speed of approximately 3400 l/s for deuterium. The hardware consists of two turbo molecular pumps (TMPs) and a mechanical pump set consisting of a mechanical and a Roots blower pump. A PLC is used as the control system to provide remote monitoring, control and software interlock capability. The NSTX cooling water provides chilled, de ionized water for heat removal in the TF, OH and PF, powermore » supplies, bus bar systems, and various diagnostics. The system provides flow monitoring via a PLC to prevent damage due to loss of flow.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
14669
Report Number(s):
PPPL-3386
TRN: US0106209
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Nov 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NSTX DEVICE; OPERATION; CONSTRUCTION; COMPUTERIZED CONTROL SYSTEMS; DESIGN; COOLING SYSTEMS; FIRST WALL; POWER SUPPLIES; VACUUM SYSTEMS; DEUTERIUM

Citation Formats

L.E. Dudek, M. Kalish, R. Gernhardt, R.F. Parsells, and W. Blanchard. Design and Construction of the NSTX Bakeout, Cooling and Vacuum Systems. United States: N. p., 1999. Web. doi:10.2172/14669.
L.E. Dudek, M. Kalish, R. Gernhardt, R.F. Parsells, & W. Blanchard. Design and Construction of the NSTX Bakeout, Cooling and Vacuum Systems. United States. doi:10.2172/14669.
L.E. Dudek, M. Kalish, R. Gernhardt, R.F. Parsells, and W. Blanchard. Mon . "Design and Construction of the NSTX Bakeout, Cooling and Vacuum Systems". United States. doi:10.2172/14669. https://www.osti.gov/servlets/purl/14669.
@article{osti_14669,
title = {Design and Construction of the NSTX Bakeout, Cooling and Vacuum Systems},
author = {L.E. Dudek and M. Kalish and R. Gernhardt and R.F. Parsells and W. Blanchard},
abstractNote = {This paper will describe the design, construction and initial operation of the NSTX bakeout, water cooling and vacuum systems. The bakeout system is designed for two modes of operation. The first mode allows heating of the first wall components to 350 degrees C while the external vessel is cooled to 150 degrees C. The second mode cools the first wall to 150 degrees C and the external vessel to 50 degrees C. The system uses a low viscosity heat transfer oil which is capable of high temperature low pressure operation. The NSTX Torus Vacuum Pumping System (TVPS) is designed to achieve a base pressure of approximately 1x10 (superscript -8) Torr and to evacuate the plasma fuel gas loads in less than 5 minutes between discharges. The vacuum pumping system is capable of a pumping speed of approximately 3400 l/s for deuterium. The hardware consists of two turbo molecular pumps (TMPs) and a mechanical pump set consisting of a mechanical and a Roots blower pump. A PLC is used as the control system to provide remote monitoring, control and software interlock capability. The NSTX cooling water provides chilled, de ionized water for heat removal in the TF, OH and PF, power supplies, bus bar systems, and various diagnostics. The system provides flow monitoring via a PLC to prevent damage due to loss of flow.},
doi = {10.2172/14669},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 1999},
month = {Mon Nov 01 00:00:00 EST 1999}
}

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