PARTICLE EXHAUST SCHEME USING AN IN-VESSEL CRYOCONDENSATION PUMP IN THE ADVANCED DIVERTOR CONFIGURATION OF THE DIII-D TOKAMAK

被引：18

作者：

MENON, MM ^{[1
]}

ANDERSON, PM ^{[1
]}

BAXI, CB ^{[1
]}

LANGHORN, A ^{[1
]}

LUXON, JL ^{[1
]}

MAHDAVI, MA ^{[1
]}

MIODUSZEWSKI, PK ^{[1
]}

OWEN, LW ^{[1
]}

SCHAFFER, MJ ^{[1
]}

SCHAUBEL, KM ^{[1
]}

SMITH, JP ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831

来源：

FUSION TECHNOLOGY | 1992年 / 22卷 / 03期

关键词：

DIVERTOR SYSTEMS; PARTICLE EXHAUST; CRYOPUMP;

D O I：

10.13182/FST92-A30095

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A particle exhaust scheme using a cryocondensation pump in the advanced divertor configuration of the DIII-D tokamak is described. In this configuration, the pump is located inside a baffle chamber within the tokamak, designed to receive particles reflected off the divertor strike region. A concentric coaxial loop with forced-convection flow of two-phase helium is selected as the cryocondensation surface. The pumping configuration is optimized by Monte Carlo techniques to provide maximum exhaust efficiency while minimizing the deleterious effects of impingement of energetic plasma particles on cryogenic surfaces. Heat loading contributions from various sources on the cryogenic surfaces are estimated, based on which the cryogenic flow loop for the pump is designed. The mechanical aspects of the pump, designed to meet the many challenging requirements of operating the cryopump internal to the tokamak vacuum and in close proximity with the high-temperature plasma, are also outlined.

引用

页码：356 / 370

页数：15

共 24 条

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