Jun 26 – 29, 2017
Schloss Waldthausen
Europe/Berlin timezone

The crystal Zero Degree Detectors at BESIII

Jun 27, 2017, 6:30 PM
1h 30m
Helmholtz-Institut Mainz

Helmholtz-Institut Mainz

Staudingerweg 18, 55128 Mainz
Board: 29


Dr Brice Garillon (JGU Mainz)


The BESIII experiment based at the BEPCII $e^{+}e^{-}$ collider (Beijing, China) is investigating physics in the charm-$\tau$ region. Processes in which the particles emission peaks towards small polar angles, such as Initial State Radiations (ISR) from $e^{+}e^{-}$ annhiliations, are currently detected with limited efficiency. In order to improve their detections, we propose two small taggers placed at the very forward/backward angles. Each detector is composed of two arrays of 4x3 rectangular-shaped scintillating LYSO crystals, separated by a gap. The scintillation light will be collected by silicon photomultipliers (SiPMs) and the signals will be digitized using sampling Analog-to-Digital Converters (sADC). In this contribution, we present the results from the tests of a single LYSO crystal and the read-out electronics using radioactive sources. Studies of the final setup, using Geant4 based simulation of BESIII and the cZDDs, are also shown. This work is supported by the DFG under contract No. CRC 1044.

Primary author

Dr Brice Garillon (JGU Mainz)


Prof. Achim Denig (JGU Mainz) Dr Christoph Florian Redmer (Institut für Kernphysik, Johannes Gutenberg-Universität Mainz) Jens Sören Lange (Herr) Mr Leonard Koch (JLU Giessen) Dr Lutie Liang (JLU Giessen) Dr Marciniewski Pawel (University Uppsala) Dr Peter Drexler (JGU Mainz) Mr Torben Rathmann (JGU Mainz) Dr Tord Johansson (University Uppsala) Dr Werner Lauth (JGU Mainz) Wolfgang Kuehn (JLU Giessen)

Presentation materials