Submitted by albert.lehmann@... on Tue, 02/04/2019 - 12:02.
The DIRC detectors of the PANDA experiment at FAIR will use multi-anode MCP-PMTs as photon sensors. After long and extensive R&D work
the performance parameters of the recent 2'' MCP-PMT models are converging towards the required values. The lifetime of most ALD-coated
MCP-PMTs is well surpassing the DIRC requirements with the best tube currently reaching >22 C/cm2 without aging. The performance of the most advanced MCP-PMTs from PHOTONIS and Hamamatsu fulfill basically all requirements with a highlight being the high DQE of almost 30% for the PHOTONIS 9002108. The improvements of the latest MCP-PMT models compared to former tubes are emphasized in this paper. In addition, some performance features of a recently developed 2'' MCP-PMT by Photek Ltd are presented and discussed.
Submitted by markus.moritz@e... on Sat, 30/03/2019 - 16:25.
The future PANDA experiment with a next generation detector will focus on hadron
spectroscopy. It will use cooled anti-proton beams
with a momentum between 1.5 GeV/c and 15 GeV/c
interacting with various targets. This allows to direct
form all states of all quantum numbers and measure
there widths with an accuracy of a few tens of keV
The experiment will be located at the Facility for
Anti-Proton and Ion Research in Germany, which is currently under construction.
The electromagnetic target calorimeter of the PANDA experiment has the challenging aim to
detect high energy photons with excellent energy resolution over the full dynamic range from
15 GeV down to a few tens of MeV inside a 2T solenoid. To reach this goal, improved
PbWO 4 scintillator crystals (PWO-II) cooled down to −25°C have been chosen. They provide
a fast decay time for highest count rates, short radiation length for compactness, improved
light yield for lowest thresholds and excellent radiation hardness. The target calorimeter itself
is divided into a barrel shaped structure and two endcaps. Individual crystals will be read out
with two precisely matched large area avalanche photo diodes. In the very inner part of the
forward endcap, vacuum phototetrodes will be used instead.
The talk will give an overview of the PANDA experiment and focuses on its calorimeter
including the scintillator material and the production status. Furthermore, the construction and
assembly procedure will be presented.
This work was upported by the BMBF.
PhD thesis submitted in October 2018 and defended in December 2018, titled: Development of a DAQ System for the Custom F.E. Electronics of the PANDA MVD and Study of the Reaction pbarp->Xi-Xibar+pi+pi-.