HELIUM EXHAUST STUDIES WITH THE ALT-II PUMP LIMITER IN TEXTOR

被引：22

作者：

FINKEN, KH

HILLIS, DL

DIPPEL, KH

HARDTKE, A

HOGAN, JT

MOYER, RA

POSPIESZCZYK, A

RUSBULDT, D

AKAISHI, K

CONN, RW

EURINGER, H

GRAY, DS

HORTON, LD

HULSE, RA

ISLER, RC

KLEPPER, CC

MIODUSZEWSKI, PK

MIYAHARA, A

SENGOKU, S

WATKINS, JG

WOLF, GH

机构：

[1] UNIV CALIF LOS ANGELES,INST PLASMA & FUS RES,LOS ANGELES,CA 90024

[2] NATL INST FUS SCI,NAGOYA,JAPAN

[3] PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08543

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

[5] JAPAN ATOM ENERGY RES INST,DEPT THERMONUCL FUS RES,TOKAI,IBARAKI 31911,JAPAN

[6] SANDIA NATL LABS,ALBUQUERQUE,NM 87185

来源：

JOURNAL OF NUCLEAR MATERIALS | 1990年 / 176卷

关键词：

D O I：

10.1016/0022-3115(90)90149-H

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In TEXTOR helium removal experiments with the pump-limiter ALT-II have started. To simulate the presence of helium ash in the plasma, helium is injected into the discharge (e.g. at t = 0.7 s) as a short pulse of DELTA-t = 20 ms. It is found that the He is removed from the discharge in an e-folding time of about half a second for neutral beam heated plasmas and in an e-folding time of about 1.5 s in an OH plasma. The exhaust efficiency of helium amounts to about 8% and is close to the one for deuterium. The fuelling efficiency for the injected helium is found to be in the range of 50-100%; the remaining part seems to be stored in the TEXTOR walls. An estimate of the surface density leads to a value of several times 10(13) cm-2. This helium can easily be liberated in succeeding discharges and can be removed efficiently when ALT is pumping.

引用

页码：816 / 820

页数：5