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An LED-based Flasher System for VERITAS

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arxiv 0911.2015 v1 pith:JITSRM5F submitted 2009-11-10 astro-ph.IM

classification astro-ph.IM
keywords systemveritasflasherledsmuchtelescopesalongbetter
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We describe a flasher system designed for use in monitoring the gains of the photomultiplier tubes used in the VERITAS gamma-ray telescopes. This system uses blue light-emitting diodes (LEDs) so it can be operated at much higher rates than a traditional laser-based system. Calibration information can be obtained with better statistical precision with reduced loss of observing time. The LEDs are also much less expensive than a laser. The design features of the new system are presented, along with measurements made with a prototype mounted on one of the VERITAS telescopes.

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