A stabilised blue-violet LED for VPT photocathode evaluation

A highly stable blue-violet light source ( peak wavelength 430 nm) based on the IPL 10630PAL self-monitoring LED is described. A thermoelectric cooler has been used to stabilise the 10630PAL device and the external LED current-control electronics to +- 0.1% K. The light intensity was measured to be...

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Detalles Bibliográficos
Autores principales: Hobson, Peter R, Selby, Chris
Lenguaje:eng
Publicado: 2000
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/687222
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author Hobson, Peter R
Selby, Chris
author_facet Hobson, Peter R
Selby, Chris
author_sort Hobson, Peter R
collection CERN
description A highly stable blue-violet light source ( peak wavelength 430 nm) based on the IPL 10630PAL self-monitoring LED is described. A thermoelectric cooler has been used to stabilise the 10630PAL device and the external LED current-control electronics to +- 0.1% K. The light intensity was measured to be stable to +- 0.03% for five hours, the repeatability was +- 0.1% The output spectrum of the LED is a good match to the scintillation emission of PbWO4, and this source will be used to evaluate the spatial and angular uniformity of VPT photocathodes for the endcap calorimeter.
id cern-687222
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-6872222019-09-30T06:29:59Zhttp://cds.cern.ch/record/687222engHobson, Peter RSelby, ChrisA stabilised blue-violet LED for VPT photocathode evaluationDetectors and Experimental TechniquesA highly stable blue-violet light source ( peak wavelength 430 nm) based on the IPL 10630PAL self-monitoring LED is described. A thermoelectric cooler has been used to stabilise the 10630PAL device and the external LED current-control electronics to +- 0.1% K. The light intensity was measured to be stable to +- 0.03% for five hours, the repeatability was +- 0.1% The output spectrum of the LED is a good match to the scintillation emission of PbWO4, and this source will be used to evaluate the spatial and angular uniformity of VPT photocathodes for the endcap calorimeter.CMS-NOTE-2000-023oai:cds.cern.ch:6872222000-03-01
spellingShingle Detectors and Experimental Techniques
Hobson, Peter R
Selby, Chris
A stabilised blue-violet LED for VPT photocathode evaluation
title A stabilised blue-violet LED for VPT photocathode evaluation
title_full A stabilised blue-violet LED for VPT photocathode evaluation
title_fullStr A stabilised blue-violet LED for VPT photocathode evaluation
title_full_unstemmed A stabilised blue-violet LED for VPT photocathode evaluation
title_short A stabilised blue-violet LED for VPT photocathode evaluation
title_sort stabilised blue-violet led for vpt photocathode evaluation
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/687222
work_keys_str_mv AT hobsonpeterr astabilisedbluevioletledforvptphotocathodeevaluation
AT selbychris astabilisedbluevioletledforvptphotocathodeevaluation
AT hobsonpeterr stabilisedbluevioletledforvptphotocathodeevaluation
AT selbychris stabilisedbluevioletledforvptphotocathodeevaluation

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