Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 46: Elektronik

T 46.4: Talk

Tuesday, March 28, 2017, 11:45–12:00, JUR 5

Design and evaluation of a versatile sub-ns LED pulser — •Martin Rongen and Merlin Schaufel — III. Physikalisches Institut, RWTH Aachen

Many experimental setups for the calibration of photosensors require light sources with sub-nanosecond timing precision. Such sources are commercially available. However, often their costs prohibit applications with large numbers of sources. In contrast, simple circuits commonly used in the community, such as the Kapustinsky pulser, are limited to light pulses of few nanosecond duration. In this talk we present the design and evaluation of a sub-nanosecond light pulser based on an avalanche transistor. The choice of LED paired with variable biasing allows for a wide range of output intensities at an arbitrary wavelength. This device will be used for the timing calibration of photosensors for IceCube-Gen2 and the IceAct air Cherenkov telescope.