DEVELOPMENT OF A VIBRATION-COMPENSATED CO2 INTERFEROMETER FOR THE RFX EXPERIMENT

被引:11
作者
INNOCENTE, P [1 ]
MARTINI, S [1 ]
SCHIO, A [1 ]
ROCA, CF [1 ]
机构
[1] UNIV VALENCIA,DEPT FIS ATOM MOLEC & NUCL,BURJASSOT,SPAIN
关键词
D O I
10.1063/1.1141815
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The accuracy of a vibration-compensated CO2 interferometer is often worse than expected in the design phase. This paper describes a laboratory study performed during the development of a multichord two-color CO2 interferometer for the RFX experiment with the aim of assessing the performance of this diagnostic. The phase demodulation system (quadrature phase comparators and AGC linear IF amplifiers) has been carefully tested and a set of optimum conditions has been found for which its overall accuracy is better than 1°. Other sources of error such as noncompensated vibrations or standing waves in the acousto-optic cells have been sought for and studied on a test bench interferometer. A scheme is proposed by which density measurements with an accuracy better than 1018 m-2 can be achieved.
引用
收藏
页码:2885 / 2887
页数:3
相关论文
共 10 条
[1]  
BUCHENAUER CJ, COMMUNICATION
[2]  
BUFFA A, 1989, 16TH P EUR C CONTR F, V4, P1493
[3]  
CARLSTROM T, 1986, B AM PHYS SOC, V31, P1534
[4]   MILLIMETER-WAVE INTERFEROMETER FOR MEASURING PLASMA ELECTRON-DENSITY [J].
DOMIER, CW ;
PEEBLES, WA ;
LUHMANN, NC .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (08) :1588-1590
[5]   A VIBRATION COMPENSATED HIGH-FREQUENCY HETERODYNE CO2-LASER INTERFEROMETER FOR PLASMA DIAGNOSTICS [J].
GOWERS, CW ;
LAMB, C .
JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1982, 15 (03) :343-346
[6]   2-COLOR CO2 INTERFEROMETER WITH SINGLE BRAGG CELL AND IMPROVED VIBRATION COMPENSATION AT 3.39 MU-M [J].
INNOCENTE, P ;
MARTINI, S .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (08) :1571-1573
[7]   2-COLOR INTERFEROMETER SYSTEM FOR ALCATOR C-MOD [J].
IRBY, JH ;
MARMAR, ES ;
SEVILLANO, E ;
WOLFE, SM .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (08) :1568-1570
[9]   2-COLOR INTERFEROMETRY FOR FUSION PLASMA DIAGNOSTICS [J].
LEHECKA, T ;
PEEBLES, WA ;
LUHMANN, NC ;
CARLSTROM, TN .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (08) :1580-1581
[10]   MULTICHORD, NEAR-INFRARED INTERFEROMETERS FOR THE CTX AND ZT-40M EXPERIMENTS [J].
NEWMAN, EW ;
BUCHENAUER, CJ ;
HOIDA, HW .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1986, 57 (08) :1992-1993