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Absolute brightness measurements at the LURE synchrotron with a bolometer and application to the absolute calibration of photodiodes and photocathodes

Published online by Cambridge University Press:  09 March 2009

C. Reverdin ,
P. Troussel ,
F. Le Guern ,
J.L. Bourgade ,
D. Schirmann ,
J.M. Dalmasso ,
D. Gontier  and
G. Lidove
C. Reverdin
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
P. Troussel
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
F. Le Guern
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
J.L. Bourgade
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
D. Schirmann
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
J.M. Dalmasso
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
D. Gontier
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
G. Lidove
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Études de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex, France
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Abstract

An electrically calibrated bolometer designed to measure VUV and soft X-ray radiation in tokamaks was installed at the end of the calibration beam line used by CEL-V at the LURE synchrotron. Low-noise electronics and an adequate data acquisition enabled absolute measurements of power densities as low as 1 μW/cm2. Power density measurements are presented. At the same location several soft X-ray detectors used in laser-plasma interaction studies were installed and their absolute calibration was performed (photocathodes, photodiodes, etc.). Calibration results are presented and compared with a Henke model for photocathode response.

Type
Research Article
Information
Laser and Particle Beams , Volume 12 , Issue 3 , September 1994 , pp. 573 - 583
Copyright
Copyright © Cambridge University Press 1994

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References

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