A compact Thomson scattering system

被引：14

作者：

Dimock, D

Grek, B

Johnson, D

LaBombard, B

Lipschultz, B

McCracken, G

机构：

[1] PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08544

[2] MIT,CTR PLASMA FUS,CAMBRIDGE,MA 02139

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1997年 / 68卷 / 01期

关键词：

D O I：

10.1063/1.1147678

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have made and installed a multipulse Nd:YAG Thomson scattering system for measuring electron temperature and density profiles in the throat of the divertor of the Alcator C-Mod machine. The observing head is located in the vacuum vessel in a re-entrant chamber. It is optically fast and very compact. A system for providing feedback to maintain the laser beam alignment is a part of the observing head assembly. The head is designed to minimize eddy currents, and have a very rigid adjustable mounting to resist the forces generated by the eddy currents during plasma disruptions. A four wavelength polychromator using 25 element avalanche photodiode arrays for spatial resolution has been designed and built for this system. Two of these polychromators and a single observing head will provide 50 spatial resolution elements. (C) 1997 American Institute of Physics.

引用

页码：700 / 703

页数：4