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The BaBar light pulser system

The B<sub>A</sub>B<sub>AR </sub>experiment at the PEP-II <i>e<sup>+</sup>e<sup>-</sup></i> collider at SLAC in California started taking data in May 1999. The aim of the experiment is to study <i>CP</i> violation in the <i>B</i> meson system. A central part of the B<sub>A</sub>B<sub>AR</sub> detector is CsI(TI) electromagnetic calorimeter. To make precision measurements with a calorimeter in a high luminosity environment requires that the crystals are well calibrated and continually monitored for radiation damage. However, this should not impact the total integrated luminosity. To achieve this goal a fibre-optic light pulser system was designed. The light sources chosen were Xenon flash lamps. A novel light distribution method was developed using an array of graded index microlenses. Initial results from performance studies are presented.
Date January 2000
CreatorsClark, Philip James
PublisherUniversity of Edinburgh
Source SetsEthos UK
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation

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