Design of a new Nd:YAG Thomson scattering system for MAST

被引：67

作者：

Scannell, R. ^{[1
]}

Walsh, M. J. ^{[1
]}

Carolan, P. G. ^{[1
]}

Darke, A. C. ^{[1
]}

Dunstan, M. R. ^{[1
]}

Huxford, R. B. ^{[1
]}

McArdle, G. ^{[1
]}

Morgan, D. ^{[1
]}

Naylor, G. ^{[1
]}

O'Gorman, T. ^{[1
]}

Shibaev, S. ^{[1
]}

Barratt, N. ^{[2
]}

Gibson, K. J. ^{[2
]}

Tallents, G. J. ^{[2
]}

Wilson, H. R. ^{[2
]}

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2008年 / 79卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

infrared sources; laser beams; lenses; light scattering; neodymium; solid lasers; Tokamak devices;

D O I：

10.1063/1.2971971

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new infrared Thomson scattering system has been designed for the MAST tokamak. The system will measure at 120 spatial points with approximate to 10 mm resolution across the plasma. Eight 30 Hz 1.6 J Nd:YAG lasers will be combined to produce a sampling rate of 240 Hz. The lasers will follow separate parallel beam paths to the MAST vessel. Scattered light will be collected at approximately f/6 over scattering angles ranging from 80 degrees to 120 degrees. The laser energy and lens size, relative to an existing 1.2 J f/12 system, greatly increases the number of scattered photons collected per unit length of laser beam. This is the third generation of this polychromator to be built and a number of modifications have been made to facilitate mass production and to improve performance. Detected scattered signals will be digitized at a rate of 1 GS/s by 8 bit analog to digital converters (ADCs.) Data may be read out from the ADCs between laser pulses to allow for real-time analysis.

引用

页数：4

共 7 条

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[4]

*SOL STAT DIV, 2004, KAPD9001E03 SOL STAT

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