An LED-based Flasher System for VERITAS

Details An LED-based Flasher System for VERITAS An LED-based Flasher System for VERITAS

2009-11-10

arxiv.org/abs/0911.2015v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

Accepted for publication in Nuclear Instruments and Methods in Physics Research A

Scientific paper

10.1016/j.nima.2009.10.107

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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