\label{fig:juelich}
\end{figure}
-The test beamtime took place in J\"{u}lich behind the TOF experiment
-(\cref{fig:juelich}) in October 2012. Here, protons with a momentum of
-$2.95$\,GeV and a rate of $10^7$\,Hz were scattered at a target and
-detected in two different DIRC detectors. Additionally, different
-multi-anode PMTs were tested. In total, 10 TRB3s with PaDiWa
-front-ends were used providing $2400$ channels. It was the
-largest system of TRB3s used in a test beamtime so far and has worked
-successfully.
+In order to prove the concept of a DIRC detector made of acrylic glass
+and to test and debug the electronics envisaged for the PANDA DIRC
+detectors under experimental conditions, a prototype setup was placed
+in J\"{u}lich behind the TOF experiment (\cref{fig:juelich}) in
+October 2012. Here, protons with a momentum of $2.95$\,GeV and a rate
+of $10^7$\,Hz were scattered at a target and detected in two different
+DIRC detectors. Additionally, different multi-anode PMTs were tested.
+The PaDiWa single photon detection efficiencies for MaPMTs and MCPs
+equal to those of standard NIM based discriminators and amplifiers
+used in previous tests. In total, $10$ TRB3s with PaDiWa front-ends
+were used providing $2400$ channels, which was the largest system of
+TRB3s used in a test beamtime so far. This test experiment showed the
+need of an easy-to-handle and economical DAQ platform such as the
+TRB3.
\section{Mainz Test Beamtime 2013}\label{sec:mainz}
\end{minipage}
\caption{Results of the test beamtime in Mainz 2013: (a) Picture of
the test setup with the tower of 4 TRB3s. (b) Hit patterns at different incident
- angles and with different discriminator boards.}
+ angles and with different discriminator boards. The Cherenkov
+ rings (black dotted lines) are clearly visible for the NINO
+ discriminator and move as expected while changing the incident angle.}
\label{fig:mainz}
\end{figure}
jspc29 / publication.git / commitdiff
