Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 45: Detektorsysteme 1

T 45.3: Vortrag

Dienstag, 28. März 2017, 11:30–11:45, VSH 116

Scintillator tiles with SiPM readout for fast timing in SuperKEKB commissioning — •Hendrik Windel, Miroslav Gabriel, Margarete Kattau, Naomi van der Kolk, and Frank Simon — Max-Planck-Institut für Physik, München

For the first commissioning phase of the SuperKEKB collider from February to June 2016, a dedicated experimental setup was installed at the interaction point to study different backgrounds in dependence of accelerator parameters prior to the roll-in of the Belle II experiment in 2017. One of the subsystems of this BEAST II commissioning detector is CLAWS, a detector optimized for the study of the time structure of injection background. The CLAWS system used in the first commissioning phase consists of a total of 8 independent scintillator tiles, each with an embedded silicon photomultiplier for light readout. These detectors are capable of sub-nanosecond time resolution for minimum ionizing particles, and provide the possibility to continuously record the waveform of the photon detector signal for several 10s of milliseconds, corresponding to thousands of turns of the accelerator. In this contribution, a detailed overview of the Claws setup and its calibration is given. In addition, the effects observed originating from the radiation exposure of the detectors will be discussed.